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WO2012031492A1 - Procédé et équipement d'utilisateur permettant d'acquérir un code de facteur de dispersion variable orthogonale - Google Patents

Procédé et équipement d'utilisateur permettant d'acquérir un code de facteur de dispersion variable orthogonale Download PDF

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Publication number
WO2012031492A1
WO2012031492A1 PCT/CN2011/075000 CN2011075000W WO2012031492A1 WO 2012031492 A1 WO2012031492 A1 WO 2012031492A1 CN 2011075000 W CN2011075000 W CN 2011075000W WO 2012031492 A1 WO2012031492 A1 WO 2012031492A1
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WIPO (PCT)
Prior art keywords
spreading factor
accumulated
orthogonal variable
variable spreading
value
Prior art date
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Ceased
Application number
PCT/CN2011/075000
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English (en)
Chinese (zh)
Inventor
彭念
吴更石
孙凤宇
朱芳菲
余硕军
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Huawei Device Co Ltd
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Huawei Device 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 Huawei Device Co Ltd filed Critical Huawei Device Co Ltd
Publication of WO2012031492A1 publication Critical patent/WO2012031492A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
    • H04B1/69—Spread spectrum techniques
    • H04B1/707—Spread spectrum techniques using direct sequence modulation
    • H04B1/7073—Synchronisation aspects
    • H04B1/7075—Synchronisation aspects with code phase acquisition
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J13/00—Code division multiplex systems
    • H04J13/0007—Code type
    • H04J13/004—Orthogonal
    • H04J13/0044—OVSF [orthogonal variable spreading factor]

Definitions

  • the present invention relates to the field of mobile communication technologies, and in particular, to a method and user equipment for obtaining an orthogonal variable spreading factor code.
  • the pilot channel is a fixed rate downlink physical channel used to transmit pilot symbols.
  • the pilot symbols can be transmitted through the primary pilot frequency mode.
  • the base station transmits the pilot frequency through the primary antenna, and the Orthogonal Variable Spreading Factor Code (OVSF) of the dominant frequency is 0.
  • the base station also sends the pilot frequency through the auxiliary antenna, and the OVSF of the pilot frequency is notified by the base station by signaling.
  • OVSF Orthogonal Variable Spreading Factor Code
  • the inventor finds that, in a cell configured for the primary mode, if the user equipment does not support multiple input multiple output (MIMO), the signaling sent by the base station cannot be received. Therefore, the OVSF of the tuner frequency of the own cell cannot be obtained, and thus the interference from the secondary antenna of the base station cannot be eliminated.
  • MIMO multiple input multiple output
  • the user equipment of the cell cannot obtain the OVSF of the neighboring cell, and thus the interference from the secondary antenna of the neighboring cell cannot be eliminated.
  • the embodiments of the present invention provide a method and a user equipment that can obtain an orthogonal variable spreading factor code for a user equipment that does not support multiple input and multiple output.
  • the method for obtaining an orthogonal variable spreading factor code provided by the embodiment of the present invention includes:
  • the descrambled received signal is correlated with the second to 256 orthogonal variable spreading factor codes having a spreading factor of 256;
  • the orthogonal variable spreading factor code of the tuner frequency is obtained by accumulating the averaged energy signal according to the 255 second preset value.
  • An embodiment of the present invention further provides a method for obtaining an orthogonal variable spreading factor code, including: descrambling a received signal; and correlating, the k is a positive integer;
  • the k-channel signals accumulated by the correlation values are respectively subjected to an accumulated average of the third preset value; respectively, the energy of the signal obtained by accumulating and averaging the third preset value of the k-channel is obtained, and the obtained k-channel energy signals are respectively lengthened as The cumulative average of the fourth preset value;
  • the 256/k-l signals accumulated after the correlation values are respectively accumulated and accumulated to a fifth preset value
  • the orthogonal variable spreading factor code of the tuner frequency is obtained according to the accumulated averaged energy signal of the sixth preset value of 256/k-l.
  • An embodiment of the present invention further provides a user equipment, including:
  • a first receiving unit configured to descramble the received signal
  • the first correlation value accumulating unit is configured to accumulate correlation values of length 256 for the related 255 signals respectively;
  • the first accumulated averaging unit is configured to perform an accumulated average of the first preset value for the 255 channels after the correlation value is accumulated;
  • a first obtaining unit configured to respectively obtain energy of a signal obtained by cumulatively averaging 255 first preset values
  • a second accumulated averaging unit configured to perform the cumulative average of the obtained 255 energy signals for the second preset value
  • a second obtaining unit configured to obtain an orthogonal variable spreading factor code of the auxiliary pilot according to the 255 channel second preset value accumulated and averaged energy signals.
  • An embodiment of the present invention further provides a user equipment, including:
  • a second receiving unit configured to descramble the received signal
  • a second correlation unit configured to correlate the descrambled received signal with k orthogonal transform spread factor codes having a spreading factor of k, wherein the k is a positive integer;
  • a second correlation value accumulating unit for accumulating correlation values of length k for the correlated k-channel signals
  • a third accumulated averaging unit configured to perform an accumulated average of a third preset value for the k-channel signals accumulated by the correlation values
  • a third obtaining unit configured to respectively obtain the energy of the signal obtained by accumulating the average of the k-th third preset value; and the fourth accumulating averaging unit is configured to separately accumulate the obtained k-way energy signals to a fourth preset value Average
  • a fourth obtaining unit configured to obtain, according to the accumulated energy signal of the fourth preset value of the k path, a first orthogonal variable spreading factor that generates an orthogonal variable spreading factor code of the tuner frequency and a spreading factor of k
  • the second correlation unit is further configured to use the first orthogonal variable spreading factor code to generate a spreading factor of 256 to the 256th to the 256th orthogonal orthogonal spreading factors
  • the variable spreading factor is respectively correlated with the descrambled received signal
  • the second correlation value accumulating unit is further configured to accumulate correlation values of length 256 for the correlated 256/k-1 channel signals respectively;
  • the third accumulated averaging unit is further configured to separately perform 256/kl road signals after the correlation values are accumulated.
  • the third obtaining unit is further configured to obtain the energy of the signal after the 256/k-l fifth preset value is accumulated and averaged, and respectively perform the accumulated energy averages of the sixth preset value;
  • the fourth obtaining unit is further configured to obtain an orthogonal variable spreading factor code of the tuner frequency according to the accumulated averaged energy signal of the sixth preset value of 256/k-1.
  • the interference of other channels can be cancelled to a certain extent, so that the nature of the fixed symbol is transmitted by the tuner frequency. Obtained, the signal energy after the correlation value is accumulated is larger, and the OVSF code of the tuner frequency can be obtained by accumulating the averaged energy signal according to the second preset value, so that the user equipment that does not support multiple input and multiple output can be received according to the received The signal obtains the OVSF code of the tuner frequency.
  • FIG. 1 is a flowchart of a method for obtaining an orthogonal variable spreading factor code according to Embodiment 1 of the present invention
  • FIG. 2 is a flowchart of a method for obtaining an orthogonal variable spreading factor code according to Embodiment 2 of the present invention
  • FIG. 4 is a schematic structural diagram of a user equipment according to Embodiment 4 of the present invention.
  • the present invention provides a method and user equipment for obtaining an orthogonal variable spreading factor code.
  • the embodiments provided by the present invention will be described in detail below with reference to the accompanying drawings.
  • FIG. 1 is a flowchart of a method for obtaining an orthogonal variable spreading factor code according to Embodiment 1 of the present invention.
  • the user equipment receives the signal transmitted by the base station, and the signal transmitted by the base station is inserted into the signal for spreading.
  • the method for obtaining the orthogonal variable spreading factor code provided by the embodiment of the present invention may include:
  • the user equipment descrambles the received signal.
  • the user equipment correlates the descrambled received signal with the second to 256 orthogonal variable spreading factor codes having a spreading factor of 256, to obtain 255 related signals.
  • the first orthogonal variable spreading factor code having a spreading factor of 256 is an orthogonal variable spreading factor code used when the pilot frequency is spread at the transmitting end.
  • the 255 signals accumulated after the correlation values are respectively accumulated and accumulated to the first preset value.
  • the 255 channels of the user equipment accumulating the correlation values respectively perform an accumulated average of the first preset value.
  • the purpose of the accumulated average is to improve the quality of the received signal.
  • the first preset value may be determined according to the speed of the channel change. If the channel change is faster, the first preset value is smaller, and the channel change is slower, the first preset is The value is larger.
  • the user equipment obtains the energy of the 255 channel first preset value accumulated and averaged, and then obtains the accumulated 255 energy signals into an accumulated average of the second preset value.
  • the cumulative averaging of the embodiment of the invention can reduce the variation range of the noise energy in the signal, and reduce the influence of the noise on the final decision result.
  • the second preset value may be determined according to a specific implementation cost. If a more accurate orthogonal variable spreading factor code is required, a larger second preset value is set.
  • the signal obtained by despreading the descrambled signal by using the correct OVSF code has higher energy
  • the tuner frequency is fixed symbol
  • other channels are not fixed symbols, and the embodiments of the present invention can increase the interference of other channels to a certain extent, so that the nature of the fixed frequency of the supplementary frequency is enhanced, and the correlation values are accumulated.
  • the signal energy is larger, and the OVSF code of the tuner frequency can be obtained by accumulating the averaged energy signal according to the second preset value, so that the user equipment that does not support multiple input and multiple output can obtain the OVSF code of the tuner frequency according to the received signal.
  • the method for obtaining the orthogonal variable spreading factor code provided by the embodiment of the present invention may be used in the current cell configuration as the primary tuner frequency mode, and the user equipment that does not support MIMO may obtain the OVSF of the cell tuner frequency according to the OVSF of the cell.
  • the OVSF of the tuner frequency eliminates the interference of the base station auxiliary antenna.
  • the embodiment of the present invention may also be used in the scenario where the neighboring cell is configured as the primary tuner mode, and then the OVSF of the neighboring cell obtained by the user equipment of the cell is used, so that the OVSF of the neighboring cell is eliminated. Interference from the auxiliary antenna of the neighboring cell base station.
  • the orthogonal variable spreading factor code of the tuner frequency is obtained according to the 255 second preset value accumulated and averaged energy signals.
  • the steps are specifically implemented in the following ways:
  • the user equipment can obtain the maximum value M1 and the next largest value M2 of the current values of the 255 channels of the second preset value cumulatively averaged. If the maximum value M1 is greater than the first pre-factor code of the next largest value M2, the user equipment can obtain the orthogonal variable spreading factor code corresponding to the maximum value M1.
  • the first preset number of times and the first preset multiple number may be determined according to the accuracy of the decision, and the accuracy of the orthogonal variable spreading factor code of the tuner frequency obtained by the embodiment of the present invention is required to be higher. And setting a larger first preset number and a first preset multiple, and vice versa setting a smaller first preset number and a first preset multiple.
  • the received signal may be scrambled and despread according to the orthogonal variable spreading factor code of the tuner frequency, and the descrambling and despreading is performed.
  • the latter signal is subjected to channel estimation, thereby eliminating interference generated by signals transmitted by the base station auxiliary antenna.
  • the user equipment receives the signal and can be expressed as:
  • LMMSE Linear Minimum Mean Square Error
  • Rxy is a cross-correlation matrix of the transmitted signal and the received signal
  • Ryy is the autocorrelation matrix of the received signal
  • HH is the conjugate transposed matrix of the channel estimation matrix
  • I represents the unit matrix. Since the channel estimation matrix is obtained by the pilot, only the OVSF that knows the pilot can correctly despread and despread the pilot, and then estimate the channel, and then obtain the equalization vector for interference cancellation.
  • FIG. 2 is a flowchart of a method for obtaining an orthogonal variable spreading factor code according to Embodiment 2 of the present invention.
  • the method for obtaining an orthogonal variable spreading factor code provided in Embodiment 2 of the present invention may include:
  • step 201 is the same as step 101 in the first embodiment.
  • step 101 the execution process of step 201 is the same as step 101 in the first embodiment.
  • step 101 the execution process of step 201 is the same as step 101 in the first embodiment.
  • step 101 the execution process of step 201 is the same as step 101 in the first embodiment.
  • the user equipment correlates the descrambled received signal with k orthogonal variable spreading factor codes having a spreading factor of k, and k is a positive integer, and obtains a k-path correlated signal.
  • the spreading factor k can be 2, 4, 8, 16, 32, 64 or 128.
  • the k-channel signals accumulated by the correlation values are respectively subjected to an accumulated average of the third preset value.
  • the k-channel signal accumulated by the user equipment for the correlation value is respectively subjected to an accumulated average of the third preset value.
  • the purpose of accumulating the average is to improve the quality of the received signal.
  • the third preset value may be determined according to the channel change speed. If the channel change is faster, the third preset value is smaller, and the channel change is slower, the third preset value is larger.
  • the user equipment can obtain the energy of the signal accumulated and averaged by the third preset value of the k-channel, and respectively obtain the accumulated energy of the k-way energy signal with the length of the fourth preset value.
  • the fourth preset value may be determined according to a specific implementation cost. If a more accurate orthogonal variable spreading factor code is needed, a larger fourth preset value is set.
  • the symbols are orthogonal and the OVSF codes are orthogonal.
  • the second to the 256th/k orthogonal variable spreading factor codes in the orthogonal variable spreading factor code with a spreading factor of 256 generated by the first orthogonal variable spreading factor code and the descrambling respectively The received signal is correlated.
  • the number of orthogonal variable spreading factor codes with a spreading factor of 256 generated by the first orthogonal variable spreading factor code is 256/k, and the user equipment will orthogonally variable 256/k SF-256.
  • the 2nd to 256th/kth orthogonal variable spreading factor codes in the spreading factor code are respectively correlated with the descrambled received signal.
  • 256/k means 256 divided by k, "/,, represents the division number. Frequency factor code.
  • 256/k-l represents the quotient minus 1 of 256 divided by k.
  • the 256/kl channel signals accumulated by the user equipment for the correlation values are respectively subjected to an accumulated average of the fifth preset value.
  • the purpose of the accumulated average is to improve the quality of the received signal.
  • the fifth preset value may be determined according to the speed of the channel change. If the channel change is faster, the fifth preset value is smaller, and the channel change is slower, the fifth preset is The value is larger. 210. Obtain the energy of the signal after the averaging of the fifth preset value of the 256/kl road, and respectively obtain the energy signals to perform the cumulative average of the sixth preset value.
  • the sixth preset value may be determined according to a specific implementation cost. If a more accurate orthogonal variable spreading factor code is required, a larger sixth preset value is set.
  • the user equipment can obtain the maximum value L1 and the second largest value L2 of the current value of the energy signal after the 256/kl way sixth preset value is accumulated and averaged, and if L1 is greater than the second preset multiple of L2, the code, The user equipment obtains an orthogonal variable spreading factor code corresponding to the maximum value L1.
  • the embodiment of the present invention may further obtain N maximum values of the energy signals accumulated and averaged by the fourth preset value of the k-channel in the preset N periods, where N is an integer greater than 1. If the number of consecutive occurrences of the same maximum of the N maximum values is greater than or equal to the second predetermined number of times, and the orthogonal variable spreading factor codes corresponding to the same maximum value are the same, the orthogonal variable corresponding to the maximum value
  • the spreading factor code is an orthogonal variable spreading factor code of the tuner frequency, and the user equipment obtains a first orthogonal variable spreading factor code with a spreading factor of k corresponding to the same maximum value.
  • the signal obtained by despreading the descrambled signal by using the correct OVSF code has higher energy, and in addition, since the tuner frequency is fixed symbol
  • the descrambled signal is correlated with 256/kl OVSF with a spreading factor of 256 and the correlation value is accumulated, so that other channels can be made.
  • the interference is offset to a certain extent, so that the nature of the fixed frequency of the tuner frequency transmission is enhanced, and the signal energy of the correlation value is increased, and the OVSF of the tuner frequency can be obtained by accumulating the averaged energy signal according to the second preset value.
  • the code enables the user equipment that does not support multiple input and multiple output to obtain the OVSF code of the tuner frequency according to the received signal.
  • the number of times that the descrambled signal and the orthogonal variable spreading factor code are related is k-l+256/k times, which is required in the first embodiment.
  • the implementation of the orthogonal variable spreading factor code for obtaining the tuner frequency provided by the second embodiment of the present invention is relatively inexpensive.
  • the energy signal obtained by accumulating and averaging according to the fourth preset value of the k road obtains the first positive condition that satisfies the second preset condition.
  • the variable spreading factor code (step 206) can be specifically implemented as follows:
  • the user equipment can obtain the maximum value L1 and the next largest value L2 in the current value of the energy signal after the second preset value of the k-way is cumulatively averaged. If the maximum value L1 is greater than the second predetermined multiple of the next largest value L2, the user equipment can obtain the orthogonal variable spreading factor code corresponding to the maximum value L1.
  • the second preset number of times may be determined according to the accuracy of the decision according to the second preset multiple, and the accuracy of the orthogonal variable spreading factor code of the tuner frequency obtained by the embodiment of the present invention is required. If it is higher, a larger second preset number and a second preset multiple are set, and a smaller second preset number and a second preset multiple are set.
  • the energy signals accumulated by the fourth preset value of the k-way are used to use other methods.
  • FIG. 3 is a schematic structural diagram of a user equipment according to Embodiment 3 of the present invention.
  • the user equipment provided in Embodiment 3 of the present invention includes:
  • the first receiving unit 301 is configured to perform descrambling on the received signal.
  • the first correlation value accumulating unit 303 is configured to accumulate correlation values of length 256 for the related 255 channels, respectively;
  • the first accumulated averaging unit 304 is configured to perform an accumulated average of the first preset value for the 255 channels after the correlation value is accumulated;
  • the first obtaining unit 305 is configured to obtain, respectively, 255 channels of the first preset value accumulated and averaged signals
  • the second accumulated averaging unit 306 is configured to perform the cumulative average of the obtained 255 energy signals for the second preset value
  • the second obtaining unit 307 is configured to obtain an orthogonal variable spreading factor code of the tuner frequency according to the 255 channel second preset value accumulated and averaged energy signals.
  • the user equipment provided in the third embodiment of the present invention may be used in the method for obtaining the orthogonal variable spreading factor code provided in the foregoing corresponding embodiment.
  • the detailed execution process refer to the foregoing method embodiment, and the description is not repeated herein.
  • the second obtaining unit 307 obtains the orthogonal variable spreading factor code of the tuner frequency according to the 255 channel second preset value accumulated and averaged energy signals, including:
  • the second obtaining unit 307 is specifically configured to obtain the maximum value M1 when the maximum value M1 of the current values of the energy signals after the averaging of the k-th fourth preset value is greater than the first preset multiple of the second largest value M2.
  • Corresponding spreading factor of k is the first orthogonal variable spreading factor code of k; or, continuously obtaining N maximum values of the energy signals accumulated and averaged by the fourth preset value of the kth channel in the preset N periods, if N If the same maximum value of the maximum values is consecutively greater than or equal to the first preset number of times, and the orthogonal maximum spreading factor codes corresponding to the same maximum value are the same, the same maximum value is obtained.
  • a first orthogonal variable spreading factor code having a spreading factor of k, the N being a positive integer greater than one.
  • FIG. 4 is a schematic structural diagram of a user equipment according to Embodiment 4 of the present invention.
  • the user equipment provided in Embodiment 4 of the present invention includes:
  • a second receiving unit 401 configured to descramble the received signal
  • a second correlation unit 402 configured to correlate the descrambled received signal with k orthogonal spreading factor codes having a spreading factor of k, where k is a positive integer;
  • a second correlation value accumulating unit 403 configured to perform length k on the correlated k-channel signals Related values are accumulated;
  • the third accumulated averaging unit 404 is configured to perform an accumulated average of the third preset value for the k-channel signals accumulated by the correlation values;
  • a third obtaining unit 405, configured to obtain energy of the signal after the k-way third preset value is accumulated and averaged respectively;
  • a fourth accumulated averaging unit 406, configured to perform the accumulated average of the obtained k-way energy signals to a fourth preset value
  • a fourth obtaining unit 407 configured to obtain an orthogonal variable spreading factor code for generating a tuner frequency and a first orthogonal variable spreading factor with a spreading factor of k according to the energy signal accumulated by the fourth preset value of the k path Factor code
  • the second correlation unit 402 is further configured to use the first orthogonal variable spreading factor code to generate a spreading factor of 256 to the 256th to the 256th/k orthogonality of the orthogonal variable spreading factor.
  • a variable spreading factor is respectively associated with the descrambled received signal;
  • the second correlation value accumulating unit 403 is further configured to accumulate correlation values of length 256 for the correlated 256/k-1 channel signals respectively;
  • the third accumulated averaging unit 404 is further configured to perform an accumulated average of the 256/k-l road signals accumulated by the correlation values to a fifth preset value;
  • the third obtaining unit 405 is further configured to obtain the energy of the signal after the averaging of the 256/kl fifth preset value, and respectively obtain the energy signals to perform an accumulated average of the sixth preset value;
  • the four obtaining unit 407 is further configured to obtain an orthogonal variable spreading factor code of the tuner frequency according to the accumulated averaged energy signal of the sixth preset value of 256/kl.
  • the user equipment provided in the fourth embodiment of the present invention may be used in the method for obtaining the orthogonal variable spreading factor code provided in the foregoing corresponding embodiment 2.
  • the detailed execution process refer to the foregoing method embodiment, and the description is not repeated herein.
  • the fourth obtaining unit 407 obtains an orthogonal variable spreading factor code that generates the tuner frequency according to the energy signal accumulated and averaged according to the fourth preset value of the k road.
  • a first orthogonal variable spreading factor code having a frequency factor of k comprising:
  • the fourth obtaining unit 407 is specifically configured to obtain the maximum value when the maximum value M1 of the current value of the energy signal after the fourth predetermined value is cumulatively averaged is greater than the second predetermined multiple of the second largest value M2. a first orthogonal variable spreading factor code corresponding to a spreading factor of M1, or
  • the fourth obtaining unit 407 continuously obtains N maximum values of the energy signals accumulated and averaged by the fourth preset value of the k roads in the preset N periods, if the same maximum number of consecutive occurrences of the N maximum values is greater than or equal to the first If the orthogonal variable spreading factor codes corresponding to the same maximum value are the same, the first orthogonal variable spreading factor code with the spreading factor corresponding to the same maximum value is obtained, N Is a positive integer greater than one.
  • the storage medium may be a magnetic disk, an optical disk, a read-only memory (ROM), or a random access memory (RAM).

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Circuits Of Receivers In General (AREA)

Abstract

La présente invention se rapporte à un procédé permettant d'acquérir un code de facteur de dispersion variable orthogonale. Le procédé selon l'invention consiste : à désembrouiller les signaux reçus (101) ; à corréler respectivement les signaux reçus désembrouillés du deuxième au 256ème codes de facteur de dispersion variable orthogonale qui ont un facteur de dispersion de 256 (102) ; à cumuler respectivement les valeurs de corrélation des 255 chemins de signaux corrélés à l'intérieur d'une longueur de 256 (103) ; à cumuler et à moyenner respectivement, à l'intérieur d'une longueur d'une première valeur prédéterminée, les 255 chemins de signaux dont les valeurs de corrélation sont cumulées (104) ; à acquérir respectivement l'énergie des 255 chemins de signaux cumulés et moyennés ; et à cumuler et à moyenner ensuite respectivement l'énergie acquise des 255 chemins de signaux à l'intérieur d'une longueur d'une seconde valeur prédéterminée (105) ; et à acquérir enfin le code de facteur de dispersion variable orthogonale du signal pilote auxiliaire sur la base de l'énergie des 255 chemins de signaux qui sont cumulés et moyennés à l'intérieur d'une longueur de la seconde valeur prédéterminée (106). La solution technique de la présente invention permet à l'équipement d'utilisateur, qui ne prend pas en charge la technologie à entrées multiples et à sorties multiples, d'acquérir le code de facteur de dispersion variable orthogonale du signal pilote auxiliaire sur la base des signaux reçus.
PCT/CN2011/075000 2010-09-07 2011-05-31 Procédé et équipement d'utilisateur permettant d'acquérir un code de facteur de dispersion variable orthogonale Ceased WO2012031492A1 (fr)

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CN101944931B (zh) * 2010-09-07 2012-05-23 华为技术有限公司 获得正交可变扩频因子码的方法和用户设备
WO2012149800A1 (fr) * 2011-10-11 2012-11-08 华为技术有限公司 Procédé et terminal pour acquérir un facteur d'étalement variable orthogonal de pilote auxiliaire
WO2015196408A1 (fr) * 2014-06-26 2015-12-30 华为技术有限公司 Procédé d'envoi de pilote basé fbmc, procédé d'estimation de canal, et dispositifs associés

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