WO2014172849A1 - Transmitter and signal transmission method - Google Patents

Abstract

Embodiments of the invention provide a transmitter and a signal transmission method. The transmitter comprises: a CFR module, a main power amplifier branch comprising a first DAC and a first PA, an auxiliary power amplifier branch comprising a second DAC and a second PA, and a combiner module. The CFR module is used for receiving an input signal, performing peak-to-average ratio suppression on the input signal to obtain a main signal and a cancellation signal, and transmitting the main signal to the main power amplifier branch and sending the cancellation signal to the auxiliary power amplifier branch. The first DAC performs digital-to-analogue conversion on the main signal. The first PA is used for performing power amplification on the main signal on which the digital-to-analogue conversion has been performed. The second DAC performs digital-to-analogue conversion on the cancellation signal. The second PA is used for performing power amplification on the cancellation signal on which the digital-to-analogue conversion has been performed. The combiner module executes combination of the main signal on which the power amplification has been performed and the cancellation signal on which the power amplification has been performed. In this way, the quality of the signal transmission is improved, and the peak transmission rate of a whole communications system is enhanced.

Description

 Transmitter and method for signal transmission

 The present invention relates to the field of communications and, more particularly, to a transmitter and method for signal transmission. Background technique

With the development of communication technology, a third generation mobile communication technology (3 ^rf generation, 3G) and fourth generation mobile communication technology (4 ^th generation, 4G) applications, higher order modulation multicarrier transmitter is widely used. The high linearity and high efficiency of the transmitter system have become the basic requirements of modern communication transmitters.

 In order to achieve high efficiency and high linearity, the more common transmitters in the industry usually include Crest Factor Reduction (CFR) modules. After the baseband signal passes through the CFR module, the peak-to-average ratio can be reduced to an acceptable level for the amplifier.

 Among them, the CFR module can reduce the peak power of the input signal. For example, the peak power of the input signal can be reduced by superimposing the anti-relative signal. Thereby, the amount of retreat of the power amplifier is reduced, and the purpose of improving the efficiency and linearity of the power amplifier is achieved. Although the CFR module achieves the goal of reducing the signal peak-to-average ratio, it reduces the signal-to-noise ratio and the quality of the transmitted signal (which can be characterized by Error Vector Magnitude (EVM)). The deterioration of the transmitted signal quality affects the peak transmission rate of the entire communication system. Summary of the invention

 Embodiments of the present invention provide a transmitter and a method for signal transmission, which can improve the quality of a transmitted signal, thereby improving a peak transmission rate of the entire communication system.

In a first aspect, a transmitter is provided, including: a peak-to-average ratio suppression CFR module, a main power amplifier branch, an auxiliary power amplifier branch and a combination module, the main power amplifier branch including a first digital-to-analog converter DAC and a first power An amplifier PA, the auxiliary power amplifier branch includes a second DAC and a second PA; wherein the CFR module is configured to receive an input signal, and perform peak-to-average ratio suppression on the input signal to obtain a main signal and a cancellation signal; The DAC is configured to perform digital-to-analog conversion processing on the main signal, and the first PA is configured to perform power amplification processing on the main signal subjected to digital-to-analog conversion processing; the second DAC is configured to perform digital-analog on the cancellation signal Conversion processing, and the second PA is used for processing after digital-to-analog conversion And performing a power amplification process on the cancellation signal; the combining module is configured to perform a combining process on the main signal after the power amplification process and the cancellation signal after the power amplification process to obtain an output signal.

 In conjunction with the first aspect, in a first possible implementation manner of the first aspect, the auxiliary power amplifier branch further includes a pulse stretcher and a pulse compressor; wherein the pulse stretcher is configured to pair the power amplification processing The cancel signal performs a pulse stretching process, and the pulse compressor is configured to perform a combining process on the main signal after the power amplification process and the cancellation signal after the power amplification process to obtain the output signal, The cancellation signal is subjected to pulse compression processing after the power amplification processing.

 In combination with the first aspect or the first possible implementation of the first aspect, the transmitter further includes a digital pre-distortion DPD module; wherein the DPD module is configured to perform the main signal and/or before the digital-to-analog conversion process The digital predistortion processing is performed on the cancellation signal before the digital to analog conversion processing.

 In a second possible implementation manner of the first aspect, in a third possible implementation manner of the first aspect, the transmitter further includes a feedback branch, where the feedback branch is configured to feed back the feedback signal to the The DPD module, the feedback signal is at least one of the main signal, the power-amplified and the cancellation signal, and the output signal; the DPD module is specifically configured to: obtain according to the feedback signal The channel characteristic of the branch corresponding to the feedback signal, and performing digital predistortion processing according to the channel characteristic.

 In a fourth possible implementation manner of the first aspect, in a fourth possible implementation manner of the first aspect, the feedback branch is a common feedback branch, and the feedback branch includes a three-selection switch; The three-selection switch controls the connection between the main power amplifier branch, the auxiliary power amplifier branch and the combination module and the DPD module to control the main signal after power amplification processing, the cancellation signal after power amplification processing, and the The feedback of the output signal to the DPD module.

A second possible implementation of the first aspect, a third possible implementation of the first aspect, or a fourth possible implementation of the first aspect, in a fifth possible implementation of the first aspect The transmitter further includes a first ADC, an error power amplifier branch, the error power amplifier branch includes a third DAC and a third PA, the main power amplifier branch further includes a first combining unit; wherein the first ADC is used for Performing an analog-to-digital conversion process on the main signal after the power amplification process; the DPD module is specifically configured to: invert the signal of the main signal processed by the first ADC and the same that is not processed by the main power amplifier branch The main signal is added to obtain an error signal, and the error signal is sent to the error power amplifier branch; the third DAC is configured to: perform digital-to-analog conversion processing on the error signal, and the third PA is used for digital-to-analog conversion Processing the error signal to perform power amplification processing; the first combining unit And the method is: combining the main signal processed by the power amplification processing and not processed by the first ADC and the error signal processed by the power amplification processing to obtain the main signal subjected to power amplification processing and error processing; The module is specifically configured to: perform a combining process on the main signal subjected to power amplification processing and error processing and the cancellation signal processed by power amplification to obtain an output signal.

 In a second possible implementation manner of the first aspect, a third possible implementation manner of the first aspect, a fourth possible implementation manner of the first aspect, or a fifth possible implementation manner of the first aspect, In a sixth possible implementation manner of the first aspect, the first DAC includes a first sub-DAC and a second sub-DAC, the first PA includes a first sub-PA and a second sub-PA, and the main power amplifier branch further includes a second combining unit, wherein the DPD module is configured to: obtain a first component signal and a second component signal by using the main signal; and the first sub-DAC is configured to perform digital-to-analog conversion processing on the first component signal to obtain a The first component signal of the power amplification process, and the first sub-PA is configured to perform power amplification processing on the power-amplified first component signal; the second sub-DAC is configured to perform digital-modulation on the second component signal Converting to obtain the second component signal subjected to power amplification processing, and the second sub-PA is configured to perform power amplification processing on the second component signal subjected to power amplification processing; the second combining unit is configured to: The second component of the power amplified signal processed by the first component signal and power amplification processing is performed to obtain the combination processing on the main power amplifier signal processing.

 In a second aspect, a transmitter is provided, including: a digital predistortion DPD module, a first digital to analog converter DAC, a first power amplifier PA, a first analog to digital converter ADC, a second DAC, a second PA and a combination a circuit module, wherein the DPD module is configured to receive an input signal; the first DAC is configured to perform digital-to-analog conversion processing on the input signal, and the first PA is configured to perform power on the input signal processed by the digital-to-analog conversion process Amplifying processing to obtain the input signal after power amplification processing; the first ADC is configured to perform analog-to-digital conversion processing on the power amplified processing input signal, and the DPD module is further configured to perform analog-to-digital conversion processing The inverted signal of the input signal and the input signal not processed by the first DAC perform an addition process to obtain an error signal, the second DAC is configured to perform digital-to-analog conversion processing on the error signal, and the second PA And performing a power amplification process on the error signal processed by the digital-to-analog conversion to obtain the error signal after power amplification processing; the combining module is configured to use the power Large process and used without performing the error signal after the combiner input signal of the first ADC process and processing of the power-amplified to obtain an output signal.

With reference to the second aspect, in a first possible implementation manner of the second aspect, the transmitter further includes a feedback branch, where the feedback branch is configured to: feed back a feedback signal to the DPD module, where the The feed signal includes at least one of the input signal after the power amplification process, the error signal after the power amplification process, and the output signal; the DPD module is specifically configured to: execute the number on the input signal according to the feedback signal Predistortion processing.

 With reference to the first possible implementation of the second aspect, in a second possible implementation manner of the second aspect, the feedback branch is a common feedback branch, and the feedback branch includes a three-select switch; The three-selection switch is configured to control the input signal after the power amplification process, the error signal after the power amplification process, and the feedback of the output signal to the DPD module.

 In a third aspect, a method for signal transmission is provided, including: receiving an input signal, and performing peak-to-peak ratio suppression on the input signal to obtain a main signal and a cancellation signal; performing digital-to-analog conversion processing on the main signal, And performing power amplification processing on the main signal subjected to digital-to-analog conversion processing; performing digital-to-analog conversion processing on the cancellation signal, and performing power amplification processing on the cancellation signal processed by the digital-to-analog conversion; The processed main signal and the cancellation signal after the power amplification processing perform a combining process to obtain an output signal.

 With reference to the third aspect, in a first possible implementation manner of the third aspect, the method further includes: performing pulse broadening processing on the cancellation signal before power amplification processing; and performing the power amplification processing on the main The signal and the cancellation signal after the power amplification processing are combined to perform the pulse compression processing on the cancellation signal after the power amplification processing.

 With reference to the third aspect or the first possible implementation manner of the third aspect, in a second possible implementation manner of the third aspect, the method further includes: the main signal and/or before the digital-to-analog conversion processing The digital predistortion processing is performed on the cancellation signal before the digital to analog conversion processing.

 In conjunction with the second possible implementation of the third aspect, in a third possible implementation manner of the third aspect, the method further includes: acquiring a feedback signal, where the feedback signal is the main signal after the power amplification process And at least one of the cancellation signal and the output signal after the power amplification processing; performing the digital pre-processing on the main signal before the digital-to-analog conversion processing and/or the cancellation signal before the digital-to-analog conversion processing The distortion processing includes: obtaining a channel characteristic of the branch corresponding to the feedback signal according to the feedback signal, and performing digital predistortion processing according to the channel characteristic.

With reference to the second possible implementation manner of the third aspect or the third possible implementation manner of the third aspect, in a fourth possible implementation manner of the third aspect, the method further includes: performing power amplification processing The main signal performs an analog-to-digital conversion process; the pair performing the digital pre-distortion processing on the main signal before the digital-to-analog conversion process and/or the cancellation signal before the digital-to-analog conversion process, including: performing the analog-to-digital conversion process The inverted signal of the main signal is followed by the main signal that has not been subjected to digital-to-analog conversion processing. The addition process obtains an error signal; the method further comprises: performing digital-to-analog conversion processing on the error signal, and performing power amplification processing on the error signal processed by the digital-to-analog conversion, and performing power amplification processing without analog-digital conversion processing The main signal and the error signal processed by the power amplification process are combined to obtain the main signal subjected to power amplification processing and error processing; the main signal after power amplification processing and the power amplified processing Performing the combining process on the cancellation signal to obtain the output signal includes: performing a combining process on the main signal subjected to the power amplification processing and the error processing and the cancellation signal subjected to the power amplification processing to obtain the output signal.

 In conjunction with the second possible implementation of the third aspect, the third possible implementation of the third aspect, or the fourth possible implementation of the third aspect, in a fifth possible implementation manner of the third aspect The method further includes: acquiring a first component signal and a second component signal by the main signal; performing digital-to-analog conversion processing on the main signal, and performing power amplification processing on the main signal subjected to digital-to-analog conversion processing, including Performing digital-to-analog conversion processing on the first component signal to obtain the power-amplified first component signal, and performing power amplification processing on the power-amplified first component signal; performing digital-modulation on the second component signal Converting to obtain the second component signal subjected to power amplification processing, and performing power amplification processing on the second component signal subjected to power amplification processing; and processing the first component signal and the power amplification processing by power amplification processing The two component signals are combined to obtain the main signal subjected to power amplification processing.

 In a fourth aspect, a method for signal transmission is provided, the method comprising: receiving an input signal; performing a digital-to-analog conversion process on the input signal, and performing a power amplification process on the input signal processed by the digital-to-analog conversion, Obtaining the input signal after the power amplification process; performing analog-to-digital conversion processing on the power-amplified input signal, and converting the inverted signal of the input signal after the analog-to-digital conversion process to the digital-to-analog conversion The processed input signal performs an addition process to acquire an error signal, performs digital-to-analog conversion processing on the error signal, and performs power amplification processing on the error signal subjected to digital-to-analog conversion processing to acquire the error signal subjected to power amplification processing. And performing the combining process on the input signal subjected to power amplification processing and not subjected to analog-to-digital conversion processing and the power amplification-processed error signal to obtain an output signal.

 With reference to the fourth aspect, in a first possible implementation manner of the fourth aspect, the method further includes: acquiring a feedback signal, where the feedback signal includes the power amplified processing input signal, and the power amplification processing And at least one of the error signal and the output signal; and performing digital predistortion processing on the input signal according to the feedback signal.

Therefore, the transmitter in the embodiment of the present invention can perform peak-to-average ratio suppression on the input signal to obtain a master. The signal and the cancellation signal are subjected to digital-to-analog conversion processing and power amplification processing on the main signal through the main power amplifier branch, and the digital-analog conversion processing and power amplification processing are performed on the cancellation signal through the auxiliary power amplifier branch, and the power amplification processing is performed. The main signal and the cancellation signal are combined to recover the signal with deteriorated quality, thereby improving the quality of the transmitted signal and increasing the peak transmission rate of the entire communication system. DRAWINGS

 In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

 1 is a schematic structural diagram of a transmitter according to an embodiment of the present invention.

 2 is a schematic structural diagram of a transmitter according to another embodiment of the present invention.

 FIG. 3 is a schematic structural diagram of a transmitter according to another embodiment of the present invention.

 4 is a schematic structural diagram of a transmitter according to another embodiment of the present invention.

 FIG. 5 is a schematic structural diagram of a transmitter according to another embodiment of the present invention.

 FIG. 6 is a schematic structural diagram of a transmitter according to another embodiment of the present invention.

 7 is a schematic flow chart of a method for signal transmission in accordance with an embodiment of the present invention.

 FIG. 8 is a schematic structural diagram of a transmitter according to another embodiment of the present invention.

 FIG. 9 is a schematic structural diagram of a transmitter according to another embodiment of the present invention.

 FIG. 10 is a schematic flow chart of a method for signal transmission according to another embodiment of the present invention. detailed description

 The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without making creative labor are within the scope of the present invention.

 Fig. 1 shows a schematic structural diagram of a transmitter 100 according to an embodiment of the present invention.

As shown in FIG. 1, the transmitter 100 includes: a CFR module 110, a main power amplifier branch 120, a secondary power amplifier branch 130, and a combining module 140, wherein the main power amplifier branch 120 includes a first digital to analog converter (Digital to Analog The converter DAC 121 and the first power amplifier (PA) 122, the auxiliary power amplifier branch 130 includes a second DAC 131 and a second PA 132. Where the CFR The module 110 is configured to receive the input signal S(t), and perform peak-to-average ratio suppression on the input signal S(t) to obtain the main signal S, (t) and the cancellation signal P(t) (the cancellation signal may also be called This is the cancellation noise signal), and is used to send the main signal S, (t) to the main power amplifier branch 120 and to send the cancellation signal P(t) to the auxiliary power amplifier branch 130. The first DAC 121 is configured to perform digital to analog conversion processing on the main signal S, (t), and the first PA 122 is configured to perform power amplification processing on the main signal S, (t) subjected to digital to analog conversion processing. . The second DAC 131 is configured to perform digital-to-analog conversion processing on the cancellation signal P(t), and the second PA 132 is configured to perform power amplification processing on the cancellation signal P(t) subjected to digital-to-analog conversion processing. . The combining module 140 is configured to perform a combining process on the main signal S, (t) after the power amplification process and the cancellation signal P(t) after the power amplification process to obtain an output signal.

 The transmitter in the embodiment of the invention can perform peak-to-average ratio suppression on the input signal to obtain a main signal and a cancellation signal, and perform digital-to-analog conversion processing and power amplification processing on the main signal through the main power amplifier branch, and through the auxiliary power amplifier branch pair The cancellation signal performs digital-to-analog conversion processing and power amplification processing, and combines the main signal and the cancellation signal after power amplification processing, so that the signal with deteriorated quality can be recovered, thereby improving the quality of the transmitted signal and improving the overall communication. The peak transfer rate of the system.

 In the embodiment of the present invention, there are many ways to obtain the cancellation signal P(t) and the main signal S, (t), but both satisfy S(t)=S, (t)+P(t), for example, The peak signal detection and filtering processing may be performed on the input signal to obtain the cancellation signal P(t), and the inverse signal of the cancellation signal P(t) and the input signal S(t) may be added to obtain the main signal S, (t) .

 In the embodiment of the present invention, the combining module 140 can realize the combination of the power-amplified main signal S, (t) and the power-amplified cancellation signal P(t) through the combiner included therein. Road processing.

 In the embodiment of the present invention, if the main signal S, (t) and the cancellation signal P(t) are not aligned, the delay alignment of the signal may be implemented before being processed by the digital-to-analog conversion, for example, there may be one before the DAC 121. The delay unit aligns the main signal S, (t) with the cancellation signal P(t).

In the embodiment of the present invention, due to the sparse signal, large peak power, and low average power, the bias voltage of the PA for power amplification processing of the cancellation signal is high, and the selection specification is high. The problem of high cost. In order to solve this problem, as shown in FIG. 2, the reducer 134 of the present invention is used in which the pulse stretcher 133 is configured to perform pulse broadening processing on the cancel signal P(t) before the power amplification processing, the pulse compressor 138. It is used to perform pulse compression processing on the cancellation signal P(t) after power amplification processing. It should be understood that the pulse stretcher can be located before the DAC 131 to Performing a pulse conversion process on the cancellation signal P(t) before the digital-to-analog conversion process; or between the DAC 131 and the power amplifier 132 to cancel the signal before the digital-to-analog conversion and before the power amplification process P(t) performs pulse stretching processing. Therefore, in the embodiment of the present invention, since the cancellation signal is subjected to the pulse compression processing before being subjected to the power amplification processing, the peak power of the cancellation signal can be reduced, so that the cost can be reduced.

 In the embodiment of the present invention, as shown in FIG. 3, the transmitter 100 may further include a DPD module 150. The DPD module 150 is configured to perform a main signal S, (t) and a number of passes before the digital-to-analog conversion process. The digital predistortion processing is performed on the cancellation signal P(t) before the mode conversion processing. Wherein, for the cancellation signal, the specific digital pre-distortion processing may include adjustment of amplitude and phase, etc.; for the main signal, the specific digital pre-distortion processing may include adjustment of amplitude and phase, and may also include delay Processing, etc., so that the cancellation signal is aligned with the main signal. Of course, the DPD module may not delay the main signal, and may add a delay processing unit to the main power amplifier branch or the auxiliary power amplifier branch, which may be used for the main signal before the digital-to-analog conversion processing or before the digital-to-analog conversion processing. The cancellation signal performs a delay process to align the main signal and the cancellation signal. In the embodiment of the present invention, as shown in FIG. 3, the DPD module may include two sub-modules ^1_0 0 151 and A_DPD 152, wherein the M_DPD 151 is used to connect with the main power amplifier branch 120 to the main signal S, ( t) Performing digital predistortion processing, A_DPD 152 is used to connect with the auxiliary power amplifier branch 130 to perform digital predistortion processing on the cancellation signal P(t).

 In the embodiment of the present invention, as shown in FIG. 3, the transmitter 100 may further include a feedback branch 160. The feedback branch 160 is configured to use the power amplified processing main signal S, (t), At least one of the cancellation signal P(t) and the output signal after the power amplification process is fed back to the DPD module 150, so that the DPD module 150 can perform the main signal before the digital-to-analog conversion process according to the feedback of the feedback branch 160. S, (t) and/or digital predistortion processing is performed on the cancellation signal P(t) before the digital to analog conversion processing. Therefore, the DPD module 150 can obtain the channel characteristics of the main power amplifier branch 120 and/or the channel characteristics of the auxiliary power amplifier branch 130 according to the feedback of the feedback branch 160, and the main signal S before the digital-to-analog conversion processing, (t And performing digital predistortion processing on the cancellation signal P(t) before and after the digital to analog conversion process.

In the embodiment of the present invention, as shown in FIG. 3, the feedback branch 160 may be a common feedback branch (the present invention is not limited thereto). As shown in FIG. 3, the feedback branch 160 may further include three. A switch 165 is selected. The three-select switch 165 is used to control the connection between the main power amplifier branch 120, the auxiliary power amplifier branch 130, and the combiner module 140 and the feedback branch 160. Therefore, when the channel characteristic of the main power amplifier branch 120 needs to be acquired, the three power selection branch 170 can be connected to the DPD module 150; when the channel characteristic of the auxiliary power amplifier branch 130 needs to be acquired, The auxiliary power amplifier branch 130 is connected to the DPD module 150 through the three-selection switch 165. When the comprehensive characteristics of the main power amplifier branch 120 and the auxiliary power amplifier branch 130 need to be comprehensively evaluated, the switch 165 can be selected by three. The feedback branch 160 and the combining module 140 are connected such that the DPD module 150 performs digital predistortion processing in accordance with the output signal. Since the feedback branch 160 is a common feedback branch, it can save money.

 It should be understood that in the embodiment of the present invention, the transmitter 100 of the embodiment of the present invention may have other structures in addition to the structures shown in Figs. 1 to 3 described above.

 For example, as shown in FIG. 4, the main power amplifier branch 120 may further include a first modulator 123 for performing modulation processing on the digital-to-analog converted main signal S, (t), and the auxiliary power amplifier branch 130 may further include The second modulator 135 performs a modulation process on the digital-to-analog converted cancellation signal P(t). The algorithm adopted by the CRF module 110 shown in FIG. 4 is a Clip-filter algorithm. One branch of the CFR module 110 delays the input signal S(t), and the other branch peaks the input signal S(t). The detection and filtering process is performed to obtain the cancellation signal P(t), and the delayed signal input signal S(t) and the inverted signal of the cancellation signal P(t) are added to obtain a main signal S, (t)=S (t)-P(t).

 For example, as shown in FIG. 5, the transmitter 100 may further include a first analog to digital converter (ADC) 170, an error power amplifier branch 180, and the error power amplifier branch 180 may include a third DAC 171 and The third PA 182, the main power amplifier branch may further include a first combining unit 124;

The first ADC 170 may be configured to perform analog-to-digital conversion processing on the power-amplified main signal S(t) (the digital pre-distortion processing may be performed on the main signal before performing analog-to-digital conversion processing on the main signal, for example, amplitude And the phase correction, etc.); the DPD module 150 is specifically configured to perform an inverted signal of the main signal S(t) processed by the first ADC 170 and a main signal S(t) processed by the main power amplifier branch 120 The addition process obtains an error signal (wherein the addition process can be implemented by an adder and a delayer in 150 shown in the figure), and the error signal is sent to the error power amplifier branch 180; in the error power amplifier branch 180 The third DAC 181 is configured to perform digital-to-analog conversion processing on the error signal, and the third PA 182 is configured to perform power amplification processing on the digital-to-analog converted error signal; the first combining unit 124 is configured to use the power. The main signal which is amplified and processed without the first ADC and the error signal after the power amplification processing is combined to obtain a main signal subjected to power amplification processing and error processing; accordingly, the combining module 140 is specifically used to : Performing a combining process on the main signal subjected to the power amplification processing and the error processing and the cancellation signal subjected to the power amplification processing to obtain an output signal. Thereby, the distortion of the transmitted signal can be reduced, and the peak transmission rate of the entire communication system can be improved. And further, since the addition processing of the inverted signal of the main signal subjected to the power amplification processing and the main signal not processed by the digital-to-analog conversion is realized in the digital domain, the addition processing is not required in the analog domain, and the attenuator is not required. And phase shifters, and make the signals better aligned and added.

 For another example, as shown in FIG. 6, the first DAC 121 may include a first sub-DAC 121-1 and a second sub-DAC 121-2, and the first PA may include a first sub-PA 122-1 and a second sub-PA 122- 2, the main power amplifier branch 120 may further include a second combining unit 125; wherein the digital pre-distortion (DPD) module 150 is specifically configured to: acquire the first component signal and the second separation by using the main signal The signal (specifically can be implemented by M_DPD in the DPD, specifically, the power distribution of the main signal can obtain two signals, and the amplitude and phase adjustment of the two signals respectively obtain the first component signal and the second component signal) The first sub-DAC 121-1 is configured to perform digital-to-analog conversion processing on the first component signal to obtain the power-amplified first component signal, and the first sub-PA 122-2 is configured to perform power amplification processing. The first component signal is subjected to power amplification processing; the second sub-DAC 121-2 is configured to perform digital-to-analog conversion processing on the second component signal to obtain the power-amplified second component signal, and the second sub-PA 122-2 And performing power amplification processing on the second component signal subjected to power amplification processing; the second combining unit 125 (specifically, the combiner 125 in the figure) is configured to perform the power amplification processing on the first component signal and The second component signal subjected to power amplification processing is combined to obtain the main signal subjected to power amplification processing. Therefore, the combining module 140 can combine the power amplified processing main signal and the power amplification processed cancellation signal to obtain an output signal.

 It should be understood that, in the embodiment of the present invention, the transmitter 100 not only satisfies the following conditions: the transmitter 100 includes a first ADC 170, an error power amplifier branch 180, and the error power amplifier branch 180 includes a third DAC 171 and a third PA 182, and the main power amplifier The circuit further includes a first combining unit 124; the following conditions are also satisfied: The first DAC 121 includes a first sub-DAC 121-1 and a second sub-DAC 121-2, and the first PA includes a first sub-PA 122-1 and a The second sub-PA 122-2, the main power amplifier branch 120 further includes a second combining unit 125. Of course, under the above conditions, the transmitter 100 may further include a feedback branch 160, the main power amplifier branch 120 and the auxiliary power amplifier branch 130 each include a modulator and the like, and the auxiliary power amplifier branch 130 further includes a pulse stretcher 133 and Pulse compressor 134.

Therefore, the transmitter in the embodiment of the present invention includes a CFR module, including a first DAC and a main power amplifier branch of the first PA, including a secondary power amplifier branch of the second DAC and the second PA, and a combining module, wherein the CFR The module is configured to receive an input signal, perform peak-to-average ratio suppression on the input signal, to obtain a main signal and a cancellation signal, and send the main signal to the main power amplifier branch and the pair Sending a signal to the auxiliary power amplifier branch, the first DAC is configured to perform digital-to-analog conversion processing on the main signal, and the first PA is configured to perform power amplification processing on the main signal subjected to digital-to-analog conversion processing, where a second DAC is configured to perform digital to analog conversion processing on the cancellation signal, and the second PA is configured to perform power amplification processing on the cancellation signal processed by the digital to analog conversion, the combining module is configured to perform power amplification The processed main signal and the power-amplified processed cancellation signal perform a combining process to obtain an output signal, so that the transmitter in the embodiment of the present invention can improve the transmitted signal quality and improve the peak transmission rate of the entire communication system. .

 In order to more clearly understand the present invention, a method 200 for signal transmission performed by the transmitter 100 of the embodiment of the present invention will be described below with reference to FIG.

 FIG. 7 is a schematic flow diagram of a method 200 for signal transmission in accordance with an embodiment of the present invention. The method 200 can be performed by the transmitter 100. As shown in FIG. 7, the method 200 includes:

 S210: Receive an input signal, and perform peak-to-average ratio suppression on the input signal to obtain a main signal and a cancellation signal.

 S220, performing digital-to-analog conversion processing on the main signal, and performing power amplification processing on the main signal subjected to digital-to-analog conversion processing.

 S230, performing digital-to-analog conversion processing on the cancellation signal, and performing power amplification processing on the cancellation signal after the digital-to-analog conversion processing.

 S240. Perform a combining process on the main signal after power amplification processing and the cancellation signal after power amplification processing to obtain an output signal.

 Therefore, in the embodiment of the present invention, the peak signal can be suppressed by the peak-to-average ratio of the input signal to obtain the main signal and the cancellation signal, and the main signal is subjected to digital-to-analog conversion processing and power amplification processing through the main power amplifier branch, and the auxiliary power amplifier branch is cancelled. The signal performs digital-to-analog conversion processing and power amplification processing, and combines the main signal and the cancellation signal after power amplification processing, so that the signal with deteriorated quality is recovered, thereby improving the quality of the transmitted signal and improving the entire communication system. Peak transfer rate.

For ease of understanding, a method 200 for signal transmission in accordance with an embodiment of the present invention is described below in conjunction with FIG. As shown in FIG. 1, the CFR module 110 receives an input signal S(t), acquires a main signal S'(t) and a cancellation signal P(t) based on the input signal S(t), and the main signal S' ( t) is sent to the main power amplifier branch 120 and the cancellation signal P(t) is sent to the auxiliary power amplifier branch 130. The first DAC 121 performs digital to analog conversion processing on the main signal S, (t), and the first PA 122 performs power amplification processing on the main signal S, (t) subjected to digital to analog conversion processing. The second DAC 131 performs digital-to-analog conversion processing on the cancellation signal P(t), and the second PA 132 performs power amplification on the cancellation signal P(t) subjected to digital-to-analog conversion processing. Reason. The combining module 140 performs a combining process on the power-amplified main signal S, (t) and the power-amplified cancellation signal P(t) to obtain an output signal.

 In the embodiment of the present invention, there are many ways to obtain the cancellation signal P(t) and the main signal S, (t), but both satisfy S(t)=S, (t)+P(t), for example, The peak signal detection and filtering processing may be performed on the input signal to obtain the cancellation signal P(t), and the inverse signal of the cancellation signal P(t) and the input signal S(t) may be added to obtain the main signal S, (t) .

 In the embodiment of the present invention, if the main signal and the cancellation signal are not aligned, the delay alignment of the signal can be achieved before being processed by the digital to analog conversion.

 In the embodiment of the present invention, due to the sparse signal, large peak power, and low average power, the bias voltage of the PA for power amplification processing of the cancellation signal is high, and the selection specification is high. The problem of high cost. In order to solve the problem, in the embodiment of the present invention, the method 200 may further include: performing pulse broadening processing on the cancellation signal before the power amplification processing; and the main signal and power amplification after the power amplification processing The processed cancellation signal performs a combining process to obtain the output signal, and performs pulse compression processing on the cancellation signal after the power amplification process. Among other things, the pulse stretching process can be performed by the pulse stretcher 133 in the transmitter 100, which can be performed by the pulse compressor 134 in the transmitter 100. Therefore, in the embodiment of the present invention, since the cancellation signal P(t) is subjected to pulse compression processing before being subjected to the power amplification processing, the peak power of the cancellation signal P(t) can be reduced, so that the cost can be reduced.

 In the embodiment of the present invention, the method 200 may further include: performing digital pre-distortion processing on the main signal before the digital-to-analog conversion processing and/or the cancellation signal before the digital-to-analog conversion processing, specifically by the transmitter The DPD module 150 in 100 executes.

In the embodiment of the present invention, the method 200 may further include: acquiring a feedback signal, where the feedback signal is the at least one of the main signal after power amplification processing, the cancellation signal after power amplification processing, and the output signal And performing the digital pre-distortion processing on the main signal before the digital-to-analog conversion processing and/or the cancellation signal before the digital-to-analog conversion processing, the method may include: acquiring, according to the feedback signal, the corresponding signal The channel characteristics of the branch, and digital predistortion processing is performed according to the channel characteristics. Wherein, for the cancellation signal, the specific digital pre-distortion processing may include adjustment of amplitude and phase, etc.; for the main signal, the specific digital pre-distortion processing may include adjustment of amplitude and phase, and may also include delay Processing, etc., so that the cancellation signal is aligned with the main signal. Of course, the main signal may not be delayed in the pre-distortion processing, and the main signal or the power-amplified cancellation signal may be subjected to delay processing to make the main signal and the cancellation. Signal alignment.

 In the embodiment of the present invention, the analog-to-digital conversion process may be performed on the main signal after the power amplification process, and then the inverted signal of the main signal subjected to the analog-to-digital conversion process and the main signal not processed by the digital-to-analog conversion may be performed. Performing an addition process to obtain an error signal; then performing a digital-to-analog conversion process on the error signal, and performing a power amplification process on the error signal processed by the digital-to-analog conversion process, and performing the power amplification process without the analog-to-digital conversion process The main signal and the error signal processed by the power amplification process are combined to obtain a main signal subjected to power amplification processing and error processing; and then the main signal subjected to power amplification processing and error processing and the cancellation signal subjected to power amplification processing A combined process is performed to obtain the output signal.

 In the embodiment of the present invention, the first component signal and the second component signal may be acquired by using the main signal (specifically, the power signal of the main signal may be obtained to obtain two signals, and the amplitude and phase of the two signals are separately performed. Adjusting to obtain a first component signal and a second component signal); then respectively performing a digital-to-analog conversion process on the first component signal to obtain the power-amplified first component signal, and the first power-amplified processing The component signal is subjected to power amplification processing; the second component signal is subjected to digital-to-analog conversion processing to obtain the second component signal subjected to power amplification processing, and the power amplification processing is performed on the second component signal subjected to power amplification processing; The first component signal and the second component signal subjected to power amplification processing are combined and processed to obtain the main signal subjected to power amplification processing.

In order to more clearly understand the present invention, a method 200 for signal transmission in accordance with an embodiment of the present invention will be specifically described below in conjunction with FIG. Specifically, after the CFR module 110 receives the input signal S(t), one branch performs delay processing on the input signal S(t), and another branch performs peak detection and filtering processing on the input signal to obtain a pair. The cancellation signal P(t) performs addition processing on the delayed-processed input signal S(t) and the inverted signal of the cancellation signal P(t) to obtain a main signal S, (t)=S(t)-P( t); The CRF module sends the main signal S, (t) and the cancellation signal P(t) to the DPD module 150, wherein the main signal S, (t) can be sent to the main signal S, (t) a submodule M_DPD 151 performing digital predistortion processing and transmitting a cancellation signal P(t) to a submodule A_DPD 152 for performing digital predistortion processing on the cancellation signal P(t); the DPD module 150 respectively pairs the main signal S , (t) and the digital pre-distortion processing of the cancellation signal P(t), for example, alignment of the main signal S, (t) and the cancellation signal P(t), adjustment of phase and amplitude, etc., wherein the DPD module 150 The channel characteristics of the main power amplifier branch 120 and the auxiliary power amplifier branch 130 may be respectively obtained according to the feedback of the feedback channel 160, and according to the communication between the main power amplifier branch 120 and the auxiliary power amplifier branch 130 Channel characteristics perform digital predistortion processing; DPD module 150 will be digital The predistortion processed main signal S, (t) is sent to the main power amplifier branch 120, and the digital predistortion processed cancellation signal P(t) is sent to the auxiliary power amplifier branch 130; the first of the main power amplifier branches 120 The DAC 121 performs digital-to-analog conversion processing on the main signal S, (t), and then transmits it to the first modulator 123, and the digital-modulated main signal S, (t) is modulated by the first modulator 123 and sent to The first power amplifier 122, the power amplifier 122 performs power amplification processing on the modulated main signal S, (t), and then sends it to the combining module 140; the pulse stretcher 133 in the auxiliary power amplifier branch 130 pairs digital The pre-distortion processing cancellation signal P(t) performs pulse stretching processing, and the second DAC 131 performs digital-to-analog conversion processing on the pulse-stretched cancellation signal P(t), and then transmits the cancellation signal to the second modulator 135. The second modulator 135 modulates the canceled signal P(t) subjected to the digital-to-analog conversion processing and transmits it to the second PA 134, and the second PA 134 performs power amplification processing on the modulated processed cancellation signal, and the pulse compressor 134 Performing pulse compression processing on the cancellation signal P(t) subjected to power amplification, Sending it to the combining module 140; the combining module 140 performs a combining process on the power-amplified main signal S, (t) and the power-amplified cancellation signal P(t) to obtain an output signal, Obtaining a radio frequency high-power signal with less distortion; the amplified main signal S, (t), the pulse-compressed cancellation signal P(t) or the input signal can be sent to the feedback channel through the three-selection switch 165 160, and then sent to the DPD module 150, so that the DPD module 150 can perform digital predistortion processing on the main signal S, (t) and the cancellation signal P(t) according to the feedback of the feedback channel 160, respectively.

 Therefore, in the embodiment of the present invention, by receiving an input signal, performing peak-to-average ratio suppression on the input signal to obtain a main signal and a cancellation signal, performing digital-to-analog conversion processing on the main signal, and performing digital-to-analog conversion processing. The main signal performs a power amplification process, performs a digital-to-analog conversion process on the cancellation signal, and performs a power amplification process on the cancellation signal processed by the digital-to-analog conversion process, and the main signal and the process after the power amplification process The canceling signal after the power amplification processing performs a combining process to obtain an output signal, so that the signal with deteriorated quality is recovered, thereby improving the quality of the transmitted signal and improving the peak transmission rate of the entire communication system.

FIG. 8 is a schematic block diagram of a transmitter 300 in accordance with an embodiment of the present invention. As shown in FIG. 8, the transmitter 300 includes a DPD module 310, a first DAC 321, a first PA 322, a first ADC 331, a second DAC 341, a second PA 342, and a combining module 350. The DPD module 310 is configured to receive an input signal; the first DAC 321 is configured to perform digital-to-analog conversion processing on the input signal, and the first PA 322 is configured to perform power amplification processing on the digital-to-analog converted input signal; An ADC 331 is configured to perform analog-to-digital conversion processing on the power-amplified input signal, and the DPD module 310 is further configured to believe the input signal after the analog-to-digital conversion processing And performing an addition process with the unprocessed input signal to obtain an error signal, the second DAC 341 is configured to perform digital-to-analog conversion processing on the error signal, and the second PA 342 is configured to perform digital-to-analog conversion processing The error signal performs power amplification processing; the combining module 350 is configured to perform a combining process on the power amplification processed input signal and the power amplification processed error signal to obtain an output signal.

 The transmitter in the embodiment of the present invention may perform analog-to-digital conversion processing on the input data to obtain an inverted signal, perform an addition process on the inverted signal and the unprocessed input signal to obtain an error signal, and perform digital-to-analog conversion processing on the error signal. And power amplification processing, and finally performing a combining process on the power amplified processing input signal and the error signal to obtain an output signal, so that the signal with deteriorated quality is recovered, thereby improving the quality of the transmitted signal and improving the peak of the entire communication system. Transmission rate.

 In the embodiment of the present invention, the DPD module 310 shown in FIG. 8 may include a delay sub-module 311 and an adder 312, wherein the delay sub-module 311 is configured to cause an unprocessed input signal to be processed by analog-to-digital conversion. The inverted signals of the input signals are aligned, and the adder adds the unprocessed input signals to the inverted signals of the analog-to-digital converted input signals to obtain an error signal. Of course, the DPD module may have other implementation methods to obtain an error signal, which is not limited by the embodiment of the present invention.

 In the embodiment of the present invention, the combining module 350 shown in FIG. 8 includes a delay sub-module 351 and a combiner 352. The delay sub-module 351 can make the power amplified processing input signal and the power amplified processing error signal. In alignment, the combiner 352 combines the power amplified processing input signal with the power amplification processed error signal to obtain an output signal.

 In the embodiment of the present invention, as shown in FIG. 9, the transmitter 300 may further include a feedback branch 350. The feedback branch 350 is configured to amplify the input signal after power amplification processing. The error signal is fed back to the DPD module and at least one of the output signals is fed back to the DPD module 310, so that the DPD module 310 performs digital predistortion processing on the input signal according to feedback of the feedback branch. For example, the input signal is adjusted in amplitude and phase, and the like.

In the embodiment of the present invention, as shown in FIG. 9, the feedback branch 350 may be a common feedback branch, and the feedback branch 350 may further include a switch 355; wherein the three-select switch 355 is used. The input signal after power amplification processing, the error signal after power amplification processing, and the feedback of the output signal to the DPD module are controlled. Therefore, since the feedback branch 350 is a common feedback branch, it is possible to save money. In the embodiment of the present invention, as shown in FIG. 9, the transmitter 300 may further include a first modulator 323 between the first DAC 321 and the first PA 322 (for implementing digital-to-analog conversion processing and power). a modulation process of the input signal before the amplification process), a first demodulator 332 located between the first PA 322 and the first ADC (for implementing the solution of the input signal after the power amplification process and before the power analog to digital conversion process) And a second modulator 343 (for performing modulation processing of the error signal after the digital-to-analog conversion processing and before the power amplification processing) between the second DAC 341 and the second PA 342.

 Therefore, the transmitter in the embodiment of the present invention includes: a DPD module, a first DAC, a first PA, a first ADC, a second DAC, a second PA, and a combining module, wherein the DPD module is configured to receive an input signal The first DAC is configured to perform digital-to-analog conversion processing on the input signal, and the first PA is configured to perform power amplification processing on the input signal processed by the digital-to-analog conversion process, where the first ADC is used for power amplification The processed input signal performs an analog-to-digital conversion process, and the DPD module is further configured to perform an addition process on the inverted signal of the input signal after the analog-to-digital conversion process and the unprocessed input signal to obtain an error signal, where a second DAC is configured to perform digital-to-analog conversion processing on the error signal, and the second PA is configured to perform power amplification processing on the error signal processed by the digital-to-analog conversion, and the combining module is configured to perform power amplification processing The input signal and the error signal processed by the power amplification process perform a combining process to obtain an output signal, thereby reducing distortion of the transmitted signal and improving the overall communication. Peak transmission rate of the system. And further, since the addition processing of the inverted signal of the input signal after power amplification processing and the processing of the unprocessed input signal is implemented in the digital domain, the addition processing is not required in the analog domain, and the attenuator and phase shift are not required. The use of the device, and allows the signals to be better aligned and added.

 In order to more clearly understand the present invention, a method 400 for signal transmission in accordance with an embodiment of the present invention will be described below in conjunction with FIG. The method 400 can be performed by the transmitter 300. As shown in Figure 10, the method 400 includes:

 S410, receiving an input signal.

 S420, performing digital-to-analog conversion processing on the input signal, and performing power amplification processing on the input signal subjected to digital-to-analog conversion processing to obtain the input signal after power amplification processing.

S430, performing an analog-to-digital conversion process on the power-amplified input signal, performing an addition process on the inverted signal of the input signal after the analog-to-digital conversion process and the input signal not subjected to digital-to-analog conversion processing to obtain An error signal, performing digital-to-analog conversion processing on the error signal, and performing power amplification processing on the error signal processed by the digital-to-analog conversion to obtain a power amplification process The error signal.

 S440, performing the combining processing on the input signal subjected to power amplification processing and not subjected to analog-to-digital conversion processing and the error signal after the power amplification processing to obtain an output signal.

 The transmitter in the embodiment of the present invention may perform analog-to-digital conversion processing on the input data to obtain an inverted signal, perform an addition process on the inverted signal and the unprocessed input signal to obtain an error signal, and perform digital-to-analog conversion processing on the error signal. And power amplification processing, and finally performing a combining process on the power amplified processing input signal and the error signal to obtain an output signal, so that the signal with deteriorated quality is recovered, thereby improving the quality of the transmitted signal and improving the peak of the entire communication system. Transmission rate.

 For ease of understanding, a method 400 in accordance with an embodiment of the present invention is described below in conjunction with FIG. DPD

The 310 module receives the input signal. The first DAC 321 performs digital-to-analog conversion processing on the input signal, and the first PA 322 performs power amplification processing on the input signal subjected to the digital-to-analog conversion processing. The first ADC 331 performs analog-to-digital conversion processing on the power-amplified input signal, and the DPD module performs subtraction processing on the input signal after the analog-to-digital conversion processing and the unprocessed input signal to obtain an error signal. The second DAC 341 performs digital-to-analog conversion processing on the error signal, and the second PA 342 performs power amplification processing on the error signal subjected to digital-to-analog conversion processing. The combining module 350 performs a combining process on the power amplified processing input signal and the power amplified processing error signal to obtain an output signal.

 In the embodiment of the present invention, the method 400 may further include: acquiring a feedback signal, where the feedback signal includes the at least the power amplified processing input signal, the power amplified processing error signal, and the output signal And performing digital predistortion processing on the input signal according to the feedback signal.

In order to more clearly understand the present invention, a method 400 for signal transmission in accordance with an embodiment of the present invention will be described below in conjunction with the transmitter illustrated in FIG. Specifically, the DPD module 310 obtains an input signal, and may perform a digital operation on the input signal according to the input signal after the power amplification processing fed back by the feedback branch 350, the error signal after the power amplification processing, or the output signal obtained by the combining module. Predistortion processing, for example, adjustment of amplitude and phase, etc.; DPD module 310 - the path sends the input signal to the first DAC 321 , and the other sends the input signal to the delay submodule 311 it includes; the first DAC 321 will input The signal is subjected to digital-to-analog conversion processing, and the digital-to-analog converted input signal is sent to the first modulator 323; the first modulator 323 performs modulation processing on the digital-to-analog converted input signal, and performs modulation processing. The input signal is sent to the first power amplifier 322; The first power amplifier ₃₂₂ performs power amplification processing on the modulated input signal, and then transmits the power amplified processing input signal to the combining module 350 and the first demodulator 332; the first demodulator 332 The power amplification processing input signal performs demodulation processing, and transmits the demodulated input signal to the first ADC 331; the first ADC 331 performs analog-to-digital conversion processing on the mediation processed input signal, and performs analog-to-digital conversion processing. The input signal is sent to the DPD module 310; the DPD module performs an addition process on the analog-to-digital converted input signal and the original input signal subjected to the delay processing to obtain an error signal, and sends the error signal to the second DAC 341; The second DAC 341 performs digital-to-analog conversion processing on the error signal, and transmits the error signal processed by the digital-to-analog conversion to the second modulator 343; the second modulator 343 performs modulation processing on the error signal processed by the digital-to-analog conversion, and The modulated error signal is sent to the second power amplifier 342; the second power amplifier 343 performs power on the modulated error signal Processing, and transmitting the power amplification processed error signal to the combining module 350; the combining module 350 performs the combining processing on the power amplified processing input signal and the power amplified processing error signal, that is, the power through The amplified input signal performs delay processing to align the power amplified processing input signal with the power amplified processing error signal, and the power amplified processing input signal and the power amplified processing error signal The combining process is performed to obtain a radio frequency high power signal with less distortion. In addition, the power amplified processing input signal, the power amplified processing error signal, or the output signal obtained by the combining module can be fed back to the DPD module through the feedback branch by the control of the three-selection switch 360, thereby, the DPD module Pre-distortion processing can be performed on the input signal based on feedback from the feedback branch.

Therefore, in the embodiment of the present invention, by receiving an input signal, performing digital-to-analog conversion processing on the input signal, and performing power amplification processing on the input signal subjected to digital-to-analog conversion processing, the input after power amplification processing The signal performs an analog-to-digital conversion process, and the DPD module performs an addition process on the inverted signal of the input signal after the analog-to-digital conversion process and the unprocessed input signal to obtain an error signal, and performs digital-to-analog conversion processing on the error signal. And performing power amplification processing on the error signal processed by the digital-to-analog conversion, performing the combining processing on the input signal after the power amplification processing and the error signal after the power amplification processing to obtain an output signal, so that the quality is The deteriorated signal is recovered, thereby reducing distortion of the transmitted signal and increasing the peak transmission rate of the entire communication system. And further, since the addition processing of the inverted signal of the input signal after power amplification processing and the processing of the unprocessed input signal is implemented in the digital domain, the addition processing is implemented in the analog domain, and the attenuator and phase shift are not required. And make the signal better aligned and phase Plus.

 Those of ordinary skill in the art will appreciate that the elements and algorithm steps of the various examples described in connection with the embodiments disclosed herein can be implemented in a combination of electronic hardware or computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the solution. A person skilled in the art can use different methods for implementing the described functions for each particular application, but such implementation should not be considered to be beyond the scope of the present invention.

 It will be apparent to those skilled in the art that, for the convenience of the description and the cleaning process, the specific operation of the system, the device and the unit described above may be referred to the corresponding processes in the foregoing method embodiments, and details are not described herein again.

 In the several embodiments provided herein, it should be understood that the disclosed systems, devices, and methods may be implemented in other ways. For example, the device embodiments described above are merely illustrative. For example, the division of the unit is only a logical function division. In actual implementation, there may be another division manner, for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored, or not executed. In addition, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.

 The units described as separate components may or may not be physically separate, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of the solution of the embodiment.

 In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

The functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, the technical solution of the present invention, which is essential to the prior art or part of the technical solution, may be embodied in the form of a software product stored in a storage medium, including The instructions are used to cause a computer device (which may be a personal computer, server, or network device, etc.) to perform all or part of the steps of the methods described in various embodiments of the present invention. The foregoing storage medium includes: a USB flash drive, a mobile hard disk, a read-only memory (ROM), a random access memory (RAM), a magnetic disk or an optical disk, and the like. The medium to store the program code.

 The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily think of changes or substitutions within the technical scope of the present invention. It should be covered by the scope of the present invention. Therefore, the scope of the invention should be determined by the scope of the claims.

Claims

Rights request A transmitter, comprising: a peak-to-average ratio suppression CFR module, a main power amplifier branch, an auxiliary power amplifier branch and a combination module, the main power amplifier branch comprising a first digital-to-analog converter DAC and a first a power amplifier PA, the auxiliary power amplifier branch includes a second DAC and a second PA; wherein the CFR module is configured to receive an input signal, and perform peak-to-average ratio suppression on the input signal to obtain a main signal and a cancellation signal ;  The first DAC is configured to perform digital to analog conversion processing on the main signal, and the first PA is configured to perform power amplification processing on the main signal subjected to digital to analog conversion processing;  The second DAC is configured to perform digital to analog conversion processing on the cancellation signal, and the second The PA is configured to perform power amplification processing on the cancellation signal after the digital-to-analog conversion processing;  The combining module is configured to perform a combining process on the main signal after power amplification processing and the cancellation signal processed by power amplification to obtain an output signal.  2. The transmitter according to claim 1, wherein the auxiliary power amplifier branch further comprises a pulse stretcher and a pulse compressor; wherein the pulse stretcher is configured to perform the pair of power amplification processing And performing a pulse broadening process, wherein the pulse compressor is configured to perform a combining process on the main signal after the power amplification process and the cancellation signal after the power amplification process on the combining module to obtain the Before the signal is output, pulse compression processing is performed on the cancellation signal after the power amplification processing.  The transmitter according to claim 1 or 2, wherein the transmitter further comprises a digital pre-distortion DPD module; wherein the DPD module is configured to perform the main signal before digital-to-analog conversion processing And performing digital predistortion processing on the cancellation signal before and after the digital to analog conversion process.  4. The transmitter according to claim 3, wherein the transmitter further comprises a feedback branch; wherein  The feedback branch is configured to feed back a feedback signal to the DPD module, where the feedback signal is the main signal after power amplification processing, the cancellation signal after power amplification processing, and the output signal At least one of them;  The DPD module is specifically configured to: acquire channel characteristics of the branch corresponding to the feedback signal according to the feedback signal, and perform digital predistortion processing according to the channel characteristic. The transmitter according to claim 4, wherein the feedback branch is a common feedback branch, and the feedback branch comprises a three-select switch; wherein the three-select switch is controlled Connecting the main power amplifier branch, the auxiliary power amplifier branch and the combining module to the DPD module to control the main signal after power amplification processing, the cancellation signal after the power amplification processing, and the output Signal feedback to the DPD module.  The transmitter according to any one of claims 3 to 5, wherein the transmitter further comprises a first ADC, an error power amplifier branch, the error power amplifier branch comprising a third DAC and a third a PA, the main power amplifier branch further includes a first combining unit;  The first ADC is configured to perform analog to digital conversion processing on the main signal after power amplification processing;  The DPD module is specifically configured to: add an inverse signal of the main signal processed by the first ADC to the main signal that is not processed by the main power amplifier branch to obtain an error signal, and obtain an error signal, and The error signal is sent to the error power amplifier branch;  The third DAC is configured to: perform digital-to-analog conversion processing on the error signal, where the third PA is configured to perform power amplification processing on the error signal processed by digital-to-analog conversion;  The first combining unit is configured to: perform power amplification processing on the main signal processed by the power amplification processing and not processed by the first ADC, and the error signal processed by the power amplification processing The main signal of error processing;  The combining module is specifically configured to: perform a combining process on the main signal subjected to power amplification processing and error processing and the cancellation signal processed by power amplification to obtain an output signal.  The transmitter according to any one of claims 3 to 6, wherein the first DAC comprises a first sub DAC and a second sub DAC, and the first PA comprises a first sub PA and a second sub a PA, the main power amplifier branch further includes a second combining unit;  The DPD module is specifically configured to: acquire a first component signal and a second component signal by using the main signal;  The first sub-DAC is configured to perform digital-to-analog conversion processing on the first component signal to obtain the first component signal subjected to power amplification processing, and the first sub-PA is configured to perform the power amplification processing The first component signal is subjected to power amplification processing;  The second sub-DAC is configured to perform digital-to-analog conversion processing on the second component signal to obtain the second component signal subjected to power amplification processing, and the second sub-PA is configured to perform the power amplification processing The second component signal is subjected to power amplification processing; The second combining unit is configured to combine the power amplification processing of the first component signal and the power amplification processing of the second component signal to obtain the power amplification processing Main signal.  8. A transmitter, comprising: a digital predistortion DPD module, a first digital to analog converter DAC, a first power amplifier PA, a first analog to digital converter ADC, a second DAC, a second PA and a combination Road module;  The DPD module is configured to receive an input signal;  The first DAC is configured to perform digital-to-analog conversion processing on the input signal, and the first PA is configured to perform power amplification processing on the input signal subjected to digital-to-analog conversion processing to obtain power amplification processing The input signal;  The first ADC is configured to perform an analog-to-digital conversion process on the input signal after the power amplification process, and the DPD module is further configured to: perform an inverse signal of the input signal after the analog-to-digital conversion process The input signal not processed by the first DAC performs an addition process to acquire an error signal, the second DAC is configured to perform a digital-to-analog conversion process on the error signal, and the second PA is used to compare a number of passes Performing a power amplification process on the error signal after the mode conversion process to obtain the error signal after the power amplification process;  The combining module is configured to perform a combining process on the power amplification processing and the input signal not processed by the first ADC and the error signal after the power amplification processing to obtain an output signal.  9. The transmitter according to claim 8, wherein the transmitter further comprises a feedback branch; wherein  The feedback branch is configured to: feed back a feedback signal to the DPD module, where the feedback signal includes the input signal after the power amplification process, the error signal after the power amplification process, and the output At least one of the signals;  The DPD module is specifically configured to: perform digital predistortion processing on the input signal according to the feedback signal.  The transmitter according to claim 9, wherein the feedback branch is a common feedback branch, and the feedback branch comprises a three-select switch; wherein the three-select switch is used for control And the feedback of the input signal after the power amplification processing, the error signal after the power amplification processing, and the output signal to the DPD module.  A method for signal transmission, comprising: Receiving an input signal, performing peak-to-average ratio suppression on the input signal to obtain a main signal and a cancellation signal; Performing digital-to-analog conversion processing on the main signal, and performing power amplification processing on the main signal subjected to digital-to-analog conversion processing;  Performing a digital-to-analog conversion process on the cancellation signal, and performing a power amplification process on the cancellation signal after the digital-to-analog conversion process;  Performing a combining process on the main signal after power amplification processing and the cancellation signal after power amplification processing to obtain an output signal.  The method according to claim 11, wherein the method further comprises: performing pulse broadening processing on the cancellation signal before the power amplification processing;  Performing a pulse on the cancellation signal after the power amplification process before performing the combining process on the main signal after the power amplification processing and the cancellation signal after the power amplification processing to acquire the output signal Compression processing.  The method according to claim 11 or 12, wherein the method further comprises: the main signal before the digital-to-analog conversion processing and/or the cancellation signal before the digital-to-analog conversion processing Perform digital predistortion processing.  The method according to claim 13, wherein the method further comprises: acquiring a feedback signal, wherein the feedback signal is the main signal after power amplification processing, and the power amplification processing At least one of a cancellation signal and the output signal;  The performing the digital pre-distortion processing on the main signal before the digital-to-analog conversion processing and/or the cancellation signal before the digital-to-analog conversion processing, includes:  Obtaining, according to the feedback signal, a channel characteristic of a branch corresponding to the feedback signal, and performing digital predistortion processing according to the channel characteristic.  15. Method according to claim 13 or 14, characterized in that  The method further includes: performing analog to digital conversion processing on the main signal after power amplification processing;  The performing the digital pre-distortion processing on the main signal before the digital-to-analog conversion processing and/or the cancellation signal before the digital-to-analog conversion processing, including: performing the analog-to-digital conversion processing The inverted signal of the main signal and the main signal not processed by the digital-to-analog conversion are added to obtain an error signal; The method further includes: performing digital-to-analog conversion processing on the error signal, and performing power amplification processing on the error signal subjected to digital-to-analog conversion processing, and performing the power amplification processing without the analog-to-digital conversion processing The main signal and the error signal after power amplification processing are combined Obtaining the main signal subjected to power amplification processing and error processing;  The performing the combining process on the main signal after the power amplification processing and the cancellation signal after the power amplification processing to obtain an output signal, including: the main signal processed by the power amplification processing and the error processing Combining processing with the cancellation signal subjected to power amplification processing to acquire the output signal.  The method according to any one of claims 13 to 15, wherein the pair of the main signal before the digital-to-analog conversion processing and/or the cancellation signal before the digital-to-analog conversion processing Performing digital predistortion processing includes: acquiring a first component signal and a second component signal by using the main signal;  The performing the digital-to-analog conversion processing on the main signal, and performing the power amplification processing on the main signal after the digital-to-analog conversion processing, includes: performing digital-to-analog conversion processing on the first component signal to obtain power amplification Processing the first component signal, and performing power amplification processing on the first component signal subjected to power amplification processing; performing digital-to-analog conversion processing on the second component signal to obtain the second component subjected to power amplification processing a signal, and performing power amplification processing on the second component signal subjected to power amplification processing; combining the first component signal and the second component signal subjected to power amplification processing by power amplification processing to obtain a The main signal processed by power amplification.  17. A method for signal transmission, the method comprising: receiving an input signal;  Performing digital-to-analog conversion processing on the input signal, and performing power amplification processing on the input signal subjected to digital-to-analog conversion processing to obtain the input signal after power amplification processing; after the power amplification processing The input signal performs an analog-to-digital conversion process, and performs an addition process on the inverted signal of the input signal subjected to the analog-to-digital conversion process and the input signal not subjected to the digital-to-analog conversion process to obtain an error signal, The error signal performs digital-to-analog conversion processing, and performs power amplification processing on the error signal processed by the digital-to-analog conversion to obtain the error signal processed by power amplification;  The input signal subjected to the power amplification processing and without the analog-to-digital conversion processing and the error signal subjected to the power amplification processing are subjected to a combining process to obtain an output signal. The method according to claim 17, wherein the method further comprises: acquiring a feedback signal, the feedback signal comprising: the power-amplified input signal, the power amplification processing At least one of the error signal and the output signal; Digital predistortion processing is performed on the input signal based on the feedback signal.