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公开(公告)号：US08855233B2
公开(公告)日：2014-10-07
申请号：US13731723
申请日：2012-12-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hua Cai , Yanzhao Pang , Wei Wang , Wei Xue
CPC classification number: H04L25/03343 , H03F1/3247 , H04L27/368
Abstract: An apparatus for implementing digital baseband predistortion includes a transmission channel including a digital-to-analog converter, a modulator, an amplifier and a power amplifier, and further includes a feedback channel analog part including a diode detector, a filter and an analog-to-digital converter, and a feedback channel digital part including a predistorter, a mode obtaining unit, a predistortion coefficient generator and a feedback correcting unit. The diode detector is configured to obtain an envelope of an output signal of the power amplifier. Embodiments of the present invention further provide a method for implementing digital baseband predistortion by applying the foregoing single-chip. Due to a simple structure of the diode detector, not only the number of radio frequency devices on the feedback channel is reduced, implementation complexity of hardware is lowered, power consumption is reduced, but also a feedback channel analog part may be integrated onto the single-chip.
Abstract translation: 用于实现数字基带预失真的装置包括包括数模转换器，调制器，放大器和功率放大器的传输通道，还包括反馈通道模拟部分，其包括二极管检测器，滤波器和模数转换器 数字转换器，以及包括预失真器，模式获取单元，预失真系数发生器和反馈校正单元的反馈通道数字部分。 二极管检测器被配置为获得功率放大器的输出信号的包络。 本发明的实施例还提供了一种通过应用前述单芯片实现数字基带预失真的方法。 由于二极管检测器的结构简单，不仅反馈通道上的射频器件数量减少，降低了硬件的实现复杂度，降低了功耗，而且可以将反馈通道模拟部件集成到单个 -芯片。
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公开(公告)号：US10181914B2
公开(公告)日：2019-01-15
申请号：US15636261
申请日：2017-06-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Changliang Li , Yanzhao Pang , Xiaodong Li
Abstract: A digital pre distortion (DPD) calibration coefficient control method and apparatus are applied to a microwave communications device that includes an analog device and a digital device, and can ensure a DPD calibration effect, where the method includes determining, by interpolation and according to DPD calibration coefficients corresponding to at least 2N typical working states of the analog device obtained in advance, a specified DPD calibration coefficient corresponding to a specified working state of the analog device, where N is a quantity of parameters representing a working state of the analog device, and controlling a DPD calibration coefficient according to the determined specified DPD calibration coefficient corresponding to the specified working state of the analog device.
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公开(公告)号：US10090947B2
公开(公告)日：2018-10-02
申请号：US15708607
申请日：2017-09-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xianfeng Li , Yanzhao Pang
IPC: H04B17/336 , H04L1/20 , H04B1/10
Abstract: A receiving device and signal processing method, the method including monitoring quality parameters of N received signals in real time, wherein the N received signals are obtained by N receive antennas from a same transmit antenna, predicting, according to the quality parameters, whether quality of a first combined signal that is obtained after combination processing is performed on the N received signals is superior to quality of a received signal whose quality is optimal in the N received signals, determining the first combined signal as a to-be-processed signal in response to predicting that the quality of the first combined signal is superior to the quality of the received signal, and determining a to-be-processed signal according to M received signals of the N received signals in response to predicting that the quality of the first combined signal is inferior to the quality of the received signal.
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公开(公告)号：US09178825B2
公开(公告)日：2015-11-03
申请号：US14186960
申请日：2014-02-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hai Li , Huaping Shi , Yanzhao Pang , Christian Mazzucco , Sergio Bianchi , Xianfeng Li
IPC: H04L7/00 , H04L12/801 , H04L25/49 , H04L27/38
Abstract: The present invention relates to the field of communications technologies and discloses a data processing method and apparatus to obtain a DPD non-linear distortion compensation coefficient under a QPSK mode. The embodiments of the present invention receive a first data flow, and perform interpolation into the first data flow to obtain a second data flow; receive a third data flow, and calculate a data flow signal quality difference between the third data flow and the second data flow; and obtain a DPD non-linear distortion compensation coefficient according to the data flow signal quality difference and the third data flow or the second data flow. The embodiments of the present invention are applicable to the scenarios of obtaining a DPD non-linear distortion compensation coefficient in QPSK mode.
Abstract translation: 本发明涉及通信技术领域，并公开了一种在QPSK模式下获得DPD非线性失真补偿系数的数据处理方法和装置。 本发明的实施例接收第一数据流，并对第一数据流执行内插以获得第二数据流; 接收第三数据流，并计算第三数据流和第二数据流之间的数据流信号质量差; 并根据数据流信号质量差和第三数据流或第二数据流获得DPD非线性失真补偿系数。 本发明的实施例可应用于在QPSK模式中获得DPD非线性失真补偿系数的情况。
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5.发明授权Method for implementing compensation filter and apparatus for signal bandwidth compensation 有权用于实现信号带宽补偿的补偿滤波器和装置的方法公开(公告)号：US09048795B2
公开(公告)日：2015-06-02
申请号：US14198919
申请日：2014-03-06
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Jun Li , Xianfeng Li , Yanzhao Pang
CPC classification number: H03F1/3241 , H03F1/3247 , H03F1/3294 , H03F3/195 , H03F3/245 , H03F2200/336 , H04L27/368
Abstract: An apparatus for signal bandwidth compensation is disclosed. The apparatus includes: a digital predistortion filtering unit, a compensation filter, a conversion unit, and a power amplifier; where the digital predistortion filtering unit receives an original signal, performs predistortion processing on the original signal; the compensation filter receives the predistortion signal, compensates for distortion caused during a process of transmitting the predistortion signal to the power amplifier, and outputs a compensated predistortion signal to the conversion unit; the conversion unit receives the compensated predistortion signal, converts the compensated predistortion signal into an analog signal, performs frequency mixing processing, and outputs a predistortion signal experiencing the frequency mixing to the power amplifier; the power amplifier receives the predistortion signal experiencing the frequency mixing, amplifies the predistortion signal experiencing the frequency mixing, and outputs an amplified signal.
Abstract translation: 公开了一种用于信号带宽补偿的装置。 该装置包括：数字预失真滤波单元，补偿滤波器，转换单元和功率放大器; 其中数字预失真滤波单元接收原始信号，对原始信号执行预失真处理; 补偿滤波器接收预失真信号，补偿在将预失真信号发送到功率放大器的过程中引起的失真，并将补偿的预失真信号输出到转换单元; 转换单元接收经补偿的预失真信号，将经补偿的预失真信号转换为模拟信号，进行混频处理，并将经频率混频的预失真信号输出到功率放大器; 功率放大器接收经历频率混合的预失真信号，放大经历频率混合的预失真信号，并输出放大的信号。
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Patent Agency Ranking
公开(公告)号：US20180006744A1
公开(公告)日：2018-01-04
申请号：US15708607
申请日：2017-09-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xianfeng Li , Yanzhao Pang
IPC: H04B17/336 , H04L1/20 , H04B1/10
CPC classification number: H04B17/336 , H04B1/1027 , H04B7/08 , H04L1/203
Abstract: A receiving device and signal processing method, the method including monitoring quality parameters of N received signals in real time, wherein the N received signals are obtained by N receive antennas from a same transmit antenna, predicting, according to the quality parameters, whether quality of a first combined signal that is obtained after combination processing is performed on the N received signals is superior to quality of a received signal whose quality is optimal in the N received signals, determining the first combined signal as a to-be-processed signal in response to predicting that the quality of the first combined signal is superior to the quality of the received signal, and determining a to-be-processed signal according to M received signals of the N received signals in response to predicting that the quality of the first combined signal is inferior to the quality of the received signal.
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公开(公告)号：US20140173143A1
公开(公告)日：2014-06-19
申请号：US14186960
申请日：2014-02-21
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hai Li , Huaping Shi , Yanzhao Pang , Christian Mazzucco , Sergio Bianchi , Xianfeng Li
IPC: H04L12/801
Abstract: The present invention relates to the field of communications technologies and discloses a data processing method and apparatus to obtain a DPD non-linear distortion compensation coefficient under a QPSK mode. The embodiments of the present invention receive a first data flow, and perform interpolation into the first data flow to obtain a second data flow; receive a third data flow, and calculate a data flow signal quality difference between the third data flow and the second data flow; and obtain a DPD non-linear distortion compensation coefficient according to the data flow signal quality difference and the third data flow or the second data flow. The embodiments of the present invention are applicable to the scenarios of obtaining a DPD non-linear distortion compensation coefficient in QPSK mode.
Abstract translation: 本发明涉及通信技术领域，并公开了一种在QPSK模式下获得DPD非线性失真补偿系数的数据处理方法和装置。 本发明的实施例接收第一数据流，并对第一数据流执行内插以获得第二数据流; 接收第三数据流，并计算第三数据流和第二数据流之间的数据流信号质量差; 并根据数据流信号质量差和第三数据流或第二数据流获得DPD非线性失真补偿系数。 本发明的实施例可应用于在QPSK模式中获得DPD非线性失真补偿系数的情况。
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公开(公告)号：US20130121440A1
公开(公告)日：2013-05-16
申请号：US13731723
申请日：2012-12-31
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hua Cai , Yanzhao Pang , Wei Wang , Wei Xue
IPC: H04L25/03
CPC classification number: H04L25/03343 , H03F1/3247 , H04L27/368
Abstract: An apparatus for implementing digital baseband predistortion includes a transmission channel including a digital-to-analog converter, a modulator, an amplifier and a power amplifier, and further includes a feedback channel analog part including a diode detector, a filter and an analog-to-digital converter, and a feedback channel digital part including a predistorter, a mode obtaining unit, a predistortion coefficient generator and a feedback correcting unit. The diode detector is configured to obtain an envelope of an output signal of the power amplifier. Embodiments of the present invention further provide a method for implementing digital baseband predistortion by applying the foregoing single-chip. Due to a simple structure of the diode detector, not only the number of radio frequency devices on the feedback channel is reduced, implementation complexity of hardware is lowered, power consumption is reduced, but also a feedback channel analog part may be integrated onto the single-chip.
Abstract translation: 用于实现数字基带预失真的装置包括包括数模转换器，调制器，放大器和功率放大器的传输通道，还包括反馈通道模拟部分，其包括二极管检测器，滤波器和模数转换器 数字转换器，以及包括预失真器，模式获取单元，预失真系数发生器和反馈校正单元的反馈通道数字部分。 二极管检测器被配置为获得功率放大器的输出信号的包络。 本发明的实施例还提供了一种通过应用前述单芯片实现数字基带预失真的方法。 由于二极管检测器的结构简单，不仅反馈通道上的射频器件数量减少，降低了硬件的实现复杂度，降低了功耗，而且可以将反馈通道模拟部件集成到单个 -芯片。
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公开(公告)号：US20170302388A1
公开(公告)日：2017-10-19
申请号：US15636261
申请日：2017-06-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Changliang Li , Yanzhao Pang , Xiaodong Li
CPC classification number: H04B17/13 , H03F1/3258 , H03F3/19 , H03F3/245 , H04B1/0475 , H04B2001/045 , H04L25/03343
Abstract: A digital pre-distortion (DPD) calibration coefficient control method and apparatus are applied to a microwave communications device that includes an analog device and a digital device, and can ensure a DPD calibration effect, where the method includes determining, by interpolation and according to DPD calibration coefficients corresponding to at least 2N typical working states of the analog device obtained in advance, a specified DPD calibration coefficient corresponding to a specified working state of the analog device, where N is a quantity of parameters representing a working state of the analog device, and controlling a DPD calibration coefficient according to the determined specified DPD calibration coefficient corresponding to the specified working state of the analog device.
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公开(公告)号：US09008153B2
公开(公告)日：2015-04-14
申请号：US14280136
申请日：2014-05-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yanzhao Pang , Huaping Shi , Song Chen
CPC classification number: H04B1/62 , H03F1/3247 , H03F1/3258 , H03F3/24 , H03F2201/3215 , H04B1/0475 , H04B7/086 , H04B10/58 , H04B2001/0408 , H04B2001/0425 , H04L27/368
Abstract: Embodiments of the present invention disclose a microwave predistorted signal generating method and apparatus. A microwave receiver receives a first received signal that has undergone analog-to-digital conversion; performs channel compensation on the first received signal, to obtain a second received signal; estimates a first transmitted signal according to the second received signal, where the first transmitted signal is a transmitted signal of a microwave transmitter before digital-to-analog conversion; performs predistortion coefficient computation according to the second received signal and the first transmitted signal; performs, by using a first-order coefficient obtained through the predistortion coefficient computation, linear distortion compensation on the second received signal that is before the first transmitted signal is estimated; and sends other predistortion coefficients except for the first-order coefficient to the microwave transmitter, so that the microwave transmitter performs non-linearity predistortion on a transmitted signal.
Abstract translation: 本发明的实施例公开了一种微波预失真信号产生方法和装置。 微波接收机接收经过模数转换的第一接收信号; 对第一接收信号执行信道补偿，以获得第二接收信号; 根据第二接收信号估计第一发射信号，其中第一发射信号是数模转换之前微波发射机的发射信号; 根据第二接收信号和第一发送信号执行预失真系数计算; 通过使用通过预失真系数计算获得的一阶系数来执行在估计第一发送信号之前的第二接收信号上的线性失真补偿; 并将除一阶系数之外的其它预失真系数发送到微波发射机，使得微波发射机对发射信号执行非线性预失真。
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