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WO2008044284A1 - Appareil de modulation polaire et appareil d'émission radio - Google Patents

Appareil de modulation polaire et appareil d'émission radio Download PDF

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Publication number
WO2008044284A1
WO2008044284A1 PCT/JP2006/320227 JP2006320227W WO2008044284A1 WO 2008044284 A1 WO2008044284 A1 WO 2008044284A1 JP 2006320227 W JP2006320227 W JP 2006320227W WO 2008044284 A1 WO2008044284 A1 WO 2008044284A1
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WO
WIPO (PCT)
Prior art keywords
signal
transmission
component
switch
modulation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2006/320227
Other languages
English (en)
Japanese (ja)
Inventor
Kenji Takahashi
Hitomaro Tougou
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Corp
Panasonic Holdings Corp
Original Assignee
Panasonic Corp
Matsushita Electric Industrial Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Corp, Matsushita Electric Industrial Co Ltd filed Critical Panasonic Corp
Priority to PCT/JP2006/320227 priority Critical patent/WO2008044284A1/fr
Publication of WO2008044284A1 publication Critical patent/WO2008044284A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
    • H03F3/189—High-frequency amplifiers, e.g. radio frequency amplifiers

Definitions

  • the present invention relates to a polar modulation device and a radio transmission device including the polar modulation device.
  • 3GPP RAN LTE Long Term Evolution
  • a wireless base station device (hereinafter simply referred to as a base station) supports multiple bandwidths, and the supported bandwidth Among them, a radio communication system has been proposed in which each wireless terminal device (hereinafter simply referred to as a terminal) can flexibly allocate a bandwidth for actual communication.
  • a wireless communication system is called a scalable bandwidth system.
  • the bandwidth to be supported is defined as 1.25 MHz, 2.5 MHz, 5 MHz, 10 MHz, 15 MHz, and 20 MHz.
  • Patent Document 1 Japanese Translation of Special Publication 2006-502682
  • Patent Document 2 Japanese Patent Application Laid-Open No. 2004-104194
  • the scalable bandwidth system may use a wider band such as 20 MHz, and using VCO modulation like the conventional polar modulator has the advantage of low out-of-band noise. Although there is such a wide band, It is difficult.
  • the EER method (orthogonal modulation method) is easy to cope with a wide band! /, But has a problem of large out-of-band noise.
  • An object of the present invention is to provide a polar modulation device capable of realizing good characteristics even with narrow band and wide band! /, And a deviation, and a radio transmission device including the polar modulation device.
  • the polar modulation device of the present invention is a polar modulation device mounted on a radio transmission device that transmits a transmission signal amplified by an amplifier via an antenna, and includes an I component and a Q of the transmission modulation signal.
  • a signal acquisition unit configured to acquire an amplitude signal, a phase signal, and an I component and a Q component on a unit circle obtained by converting the phase signal, and the phase signal according to a voltage of the phase signal.
  • Conversion means for converting to a signal having a frequency
  • orthogonal modulation means for orthogonally modulating the I component and the Q component on the unit circle into which the phase signal is converted using the signal converted by the conversion means
  • a first switch means for switching between connection and non-connection between the conversion means and the quadrature modulation means based on a control signal, and a control signal based on the control signal.
  • a second switching means for switching the connection between the width unit of whether the output side of the have deviation of the output side and the converting means of said orthogonal modulation means.
  • FIG. 1 is a block diagram showing a configuration of a wireless transmission device according to an embodiment of the present invention.
  • FIG. 2 is a diagram for explaining processing in the polar signal forming unit in FIG.
  • FIG. 3 is a diagram for explaining a control method in the wireless transmission device of FIG.
  • FIG. 4 is a diagram for explaining a control method in the wireless transmission device of FIG. BEST MODE FOR CARRYING OUT THE INVENTION
  • radio transmitting apparatus 100 includes modulated signal generation section 105, polar signal forming section 110, first quadrature modulator 115, and second quadrature modulator 120.
  • PLL 125 first amplifier (PA) 130, second amplifier (PA) 135, first antenna 140, second antenna 145, first switch 150, and second It has a switch 155, a third switch 160, and a control unit 165.
  • Modulation signal generation section 105 according to the transmission scheme of radio transmitting apparatus 100, specifically, M IMO (Multi-Input Multi-Output) transmission power SISO (Single-Input Single-Output) transmission (or Depending on the SIMO (Single-Input Multi-Output)), the I and Q components of the modulation signal are output to the polar signal forming unit 110. That is, in the case of SISO transmission (or SIMO), the modulation signal generation unit 105 outputs the I component and the Q component (I, Q in FIG. 1) of one transmission stream to the polar signal formation unit 110, If MIMO transmission, MIMO (Multi-Input Multi-Output) transmission power SISO (Single-Input Single-Output) transmission (or Depending on the SIMO (Single-Input Multi-Output)), the I and Q components of the modulation signal are output to the polar signal forming unit 110. That is, in the case of SISO transmission (or SIMO), the modulation signal generation unit 105 outputs the I component and the
  • Modulation signal generation section 105 outputs transmission scheme information indicating the transmission scheme to control section 165.
  • Polar signal forming section 110 receives the I component and Q component of the modulation signal from modulation signal generation section 105, and receives the amplitude signal, the phase signal, and the I component on the unit circle into which the phase signal is converted and Forms Q component. That is, polar signal forming section 110 acquires an amplitude signal, a phase signal, and an I component and a Q component on a unit circle obtained by converting the phase signal, which are formed from the I component and the Q component of the transmission modulation signal.
  • the PLL 125 includes a VC0127.
  • the PLL 125 receives the phase signal ( ⁇ in FIG. 1) from the polar signal forming unit 110, and receives the phase signal having a frequency corresponding to the voltage.
  • a signal having a frequency corresponding to the voltage of the input signal to VC0127 is output.
  • This converted signal is supplied to the first quadrature modulator 115 via the first switch 150, the first amplifier 130 via the second switch 155, and the second quadrature modulation via the third switch 160. Is input to device 120.
  • the first quadrature modulator 115 is a single unit in which the phase signal from the polar signal forming unit 110 is converted.
  • the signal converted in step 1 is input via the first switch 150, and the signal converted by the PLL 125 is locally oscillated for the I and Q components on the unit circle converted from the phase signal. Orthogonal modulation is performed using the signal.
  • the signal after quadrature modulation by the first quadrature modulator 115 is input to the first amplifier 130 via the second switch 155.
  • the second quadrature modulator 120 is used in the case of performing I transmission, and the phase signal formed by converting the I component and Q component force of one of the plurality of streams is converted.
  • the I component and Q component ( ⁇ , Q 'in Fig. 1) on the unit circle are input, and the signal converted by the PLL 125 is input via the third switch 160.
  • the quadrature modulation is applied to the I component and Q component on the unit circle converted by using the signal converted by the PLL 125 as the local oscillation signal.
  • the signal after being orthogonally modulated by the second quadrature modulator 120 is input to the second amplifier 135 via the second switch 155.
  • the first amplifier 130 amplifies the input signal and outputs the amplified signal.
  • the first amplifier 130 includes the amplitude signal r from the polar signal forming unit 110, the first quadrature modulator 115, and the first quadrature modulator 115.
  • the second amplifier 135 amplifies the input signal and outputs the amplified signal.
  • the second amplifier 135 includes the amplitude signal r from the polar signal forming unit 110 and the output of the second quadrature modulator 120.
  • the amplified signal is transmitted via the second antenna 145.
  • the first switch 150 is provided between the PLL 125 and the first quadrature modulator 115, and is connected between the PLL 125 and the first quadrature modulator 115 based on a control signal from the control unit 165. Switch between and disconnected.
  • Second switch 155 switches connection with first amplifier 130 to either the output side of first quadrature modulator 115 or the output side of PLL 125 based on a control signal from control unit 165. Change.
  • the third switch 160 is provided between the PLL 125 and the second quadrature modulator 120, and is controlled. Based on the control signal from section 165, the connection between PLL 125 and second quadrature modulator 120 is switched.
  • the control unit 165 receives the control signal according to the bandwidth used for transmission of the transmission signal and whether the transmission scheme used for transmission of the transmission signal is MIMO transmission power SISO transmission, the first switch 150, Output to the second switch 155 and the third switch 160.
  • Polar signal forming section 110 obtains an amplitude signal, a phase signal, and an I component and a Q component on a unit circle obtained by converting the phase signal, which are formed from the I component and the Q component of the transmission modulation signal.
  • the This is acquired for one stream in the case of SISO (SIMO), and is acquired for the number of transmission streams in the case of MIMO.
  • Fig. 2 shows how to convert the I and Q components of the transmission modulation signal into amplitude and phase signals, and how to convert the phase signals into I and Q components on the unit circle.
  • the length of tuttle (amplitude) ! is represented by the square root of (I 2 + Q 2 ). Also, the I axis and transmission modulation signal
  • phase signal force is also the I component ( ⁇ ) on the unit circle.
  • the amplitude signal, the phase signal, and the phase signal force are each expressed by the following equations for the I component and Q component on the unit circle.
  • each of the I component and Q component on the unit circle is obtained from the amplitude signal and the phase signal.
  • phase signal ⁇ is converted into a signal having a frequency corresponding to the voltage by the PLL 125, and is converted.
  • the converted signal is output to the first switch 150, the second switch 155, and the third switch 160.
  • the I component and Q component ( ⁇ , Q ') on the unit circle converted to the phase signal for other streams are output to the second orthogonal modulator 120. .
  • the first switch 150, the second switch 155, and the third switch 160 are controlled as follows by a control signal from the control unit 165.
  • the output of PLL 125 is the first amplifier 130. It is controlled to be input to. In other words, the phase component of the VCO-modulated transmission signal is transmitted (see Fig. 3). Specifically, the first switch 150 and the third switch 160 are disconnected (OFF state), and the second switch 155 is connected to the output side of the PLL 125 (see FIG. 4).
  • the output of PLL 125 is input to first quadrature modulator 115 and the output of first quadrature modulator 115 Is input to the first amplifier 130. That is, the phase component of the orthogonally modulated transmission signal is transmitted (see Fig. 3). Specifically, the first switch 150 is connected (ON state), and the second switch 155 is connected to the output side of the first quadrature modulator 115 (see FIG. 4).
  • the narrow band is below 20MHz and the wide band is above 20MHz.
  • phase component of a quadrature-modulated transmission signal is transmitted in both narrowband and wideband as in the case of the non-Ml MO and wideband ( (See Figure 3 and Figure 4).
  • control unit 165 outputs a control signal that causes each switch to be in a state corresponding to the transmission mode as shown in FIG.
  • radio transmission apparatus 100 that transmits a transmission signal amplified by an amplifier via an antenna is formed from an I component and a Q component of a transmission modulation signal.
  • Amplitude signal, phase signal, and I component on the unit circle to which the phase signal is converted Polar signal forming unit 110 as signal acquisition means for acquiring the Q component, PLL 125 as conversion means for converting the phase signal into a signal having a frequency corresponding to the voltage of the phase signal, and the phase signal are converted.
  • a quadrature modulator 115 as a quadrature modulation means for performing quadrature modulation using the signal obtained by converting the I component and the Q component on the unit circle by the conversion means, and provided between the PLL 125 and the quadrature modulator 115.
  • the first switch 150 that switches between connection and disconnection between the PLL 125 and the quadrature modulator 115 based on the control signal, and the output of the quadrature modulator 115 is connected to the amplifier based on the control signal.
  • a second switch 155 that switches to either the output side of the PLL 125 or the output side of the PLL 125.
  • the polar modulation device switches between modulation in the PLL 125, which has a large merit in a narrow band, and modulation in the quadrature modulator 115, which has a large merit in a wide band, which is good for both the narrow band and the wide band.
  • the characteristics can be realized.
  • the reception quality such as the error rate characteristic on the receiving side that receives the transmission signal transmitted from the wireless transmission device 100 equipped with this polar modulator is also improved.
  • the other antenna power is transmitted to radio transmitting apparatus 100 that has another antenna different from the antenna and transmits the amplified transmission signal by switching between Ml MO transmission and SISO transmission.
  • Other quadrature modulation means for quadrature-modulating the I component and Q component on the unit circle into which the phase signal has been converted using the signal converted by the conversion means, the conversion means and the other quadrature modulation means
  • a third switch means for switching between connection and non-connection between the conversion means and the other quadrature modulation means based on the control signal.
  • the polar modulation device and the wireless transmission device of the present invention are useful as devices capable of realizing good characteristics in both narrowband and wideband.

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Transmitters (AREA)

Abstract

L'appareil de modulation polaire et l'appareil d'émission radio selon l'invention permettent d'obtenir une excellente caractéristique à la fois pour une bande étroite et pour une large bande. L'appareil d'émission radio (100) selon l'invention, qui émet, via une antenne, des signaux de transport tels qu'amplifiés par un amplificateur, inclut un appareil de modulation polaire comprenant une partie de formation de signal polaire (110) qui acquière, à partir de signaux modulés de transport (composants I et composants Q), un signal d'amplitude, un signal de phase et les composants I et Q sur un cercle d'unité auquel le signal de phase a été converti ; une boucle à verrouillage de phase (125) qui convertit le signal de phase en un signal ayant une fréquence dépendant de la tension du signal de phase ; un modulateur en quadrature de phase (115) qui utilise le signal tel que converti par la boucle à verrouillage de phase (125) pour moduler en quadrature de phase les composants I et Q auxquels le signal de phase a été converti ; un commutateur (150) qui connecte de façon sélective, en se basant sur le signal de commande, la boucle à verrouillage de phase (125) au modulateur en quadrature de phase (115) ; et un commutateur (155) qui connecte de façon sélective, en se basant sur le signal de commande, le côté sortie du modulateur en quadrature de phase (115) ou celui de la boucle à verrouillage de phase (125) à l'amplificateur.
PCT/JP2006/320227 2006-10-10 2006-10-10 Appareil de modulation polaire et appareil d'émission radio Ceased WO2008044284A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/320227 WO2008044284A1 (fr) 2006-10-10 2006-10-10 Appareil de modulation polaire et appareil d'émission radio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2006/320227 WO2008044284A1 (fr) 2006-10-10 2006-10-10 Appareil de modulation polaire et appareil d'émission radio

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011016163A1 (fr) * 2009-08-06 2011-02-10 パナソニック株式会社 Appareil de radiocommunication
WO2011024342A1 (fr) * 2009-08-26 2011-03-03 パナソニック株式会社 Appareil émetteur
WO2011024281A1 (fr) * 2009-08-27 2011-03-03 株式会社 東芝 Système d'amplificateur doherty et émetteur utilisant celui-ci
WO2011148584A1 (fr) * 2010-05-28 2011-12-01 パナソニック株式会社 Circuit de transmission et méthode de transmission

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004104194A (ja) * 2002-09-05 2004-04-02 Hitachi Ltd 無線通信装置及びそれに使用する高周波集積回路
JP2004194262A (ja) * 2002-10-18 2004-07-08 Ntt Docomo Inc 信号伝送システム、信号伝送方法及び送信機
JP2004289812A (ja) * 2003-03-05 2004-10-14 Matsushita Electric Ind Co Ltd 送信回路
JP2006186956A (ja) * 2004-12-03 2006-07-13 Matsushita Electric Ind Co Ltd マルチモード送信回路、マルチモード送受信回路及びそれを用いた無線通信装置
JP2006295282A (ja) * 2005-04-06 2006-10-26 Hitachi Metals Ltd 高周波回路装置および高周波モジュール
JP2006324978A (ja) * 2005-05-19 2006-11-30 Nippon Telegr & Teleph Corp <Ntt> 無線通信方法及びシステム

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2004104194A (ja) * 2002-09-05 2004-04-02 Hitachi Ltd 無線通信装置及びそれに使用する高周波集積回路
JP2004194262A (ja) * 2002-10-18 2004-07-08 Ntt Docomo Inc 信号伝送システム、信号伝送方法及び送信機
JP2004289812A (ja) * 2003-03-05 2004-10-14 Matsushita Electric Ind Co Ltd 送信回路
JP2006186956A (ja) * 2004-12-03 2006-07-13 Matsushita Electric Ind Co Ltd マルチモード送信回路、マルチモード送受信回路及びそれを用いた無線通信装置
JP2006295282A (ja) * 2005-04-06 2006-10-26 Hitachi Metals Ltd 高周波回路装置および高周波モジュール
JP2006324978A (ja) * 2005-05-19 2006-11-30 Nippon Telegr & Teleph Corp <Ntt> 無線通信方法及びシステム

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011016163A1 (fr) * 2009-08-06 2011-02-10 パナソニック株式会社 Appareil de radiocommunication
US8599965B2 (en) 2009-08-06 2013-12-03 Panasonic Corporation Wireless communication apparatus
WO2011024342A1 (fr) * 2009-08-26 2011-03-03 パナソニック株式会社 Appareil émetteur
US8559553B2 (en) 2009-08-26 2013-10-15 Panasonic Corporation Transmitter apparatus
WO2011024281A1 (fr) * 2009-08-27 2011-03-03 株式会社 東芝 Système d'amplificateur doherty et émetteur utilisant celui-ci
US8237498B2 (en) 2009-08-27 2012-08-07 Kabushiki Kaisha Toshiba Doherty amplifier system and transmitter using the same
JPWO2011024281A1 (ja) * 2009-08-27 2013-01-24 株式会社東芝 ドハティアンプシステム及びこれを用いた送信機
WO2011148584A1 (fr) * 2010-05-28 2011-12-01 パナソニック株式会社 Circuit de transmission et méthode de transmission
US8515367B2 (en) 2010-05-28 2013-08-20 Panasonic Corporation Transmission circuit and transmission method

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