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公开(公告)号：US20170257251A1
公开(公告)日：2017-09-07
申请号：US15599956
申请日：2017-05-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yanqing Zhao , Chunlei Yu , Tingjian TIAN
CPC classification number: H04L27/368 , H03F1/3247 , H03F1/3258 , H03F1/3294 , H03F3/189 , H03F3/245 , H03F2200/102 , H03F2201/32 , H03F2201/3233 , H04L25/03343
Abstract: A predistortion processing apparatus: an auxiliary feedback module, configured to: extract a nonlinear distortion signal from an analog signal, and input an obtained feedback signal corresponding to the nonlinear distortion signal into an auxiliary model coefficient training module; the auxiliary model coefficient training module, configured to: train an auxiliary coefficient according to the feedback signal and a predistortion signal, and transmit a first auxiliary coefficient obtained through training to a predistortion processing module; a radio frequency signal feedback module, configured to extract a fundamental wave feedback signal; a predistortion model coefficient training module, configured to: train a predistortion coefficient according to the predistortion signal and the fundamental wave feedback signal, and transmit an obtained predistortion coefficient to the predistortion processing module; the predistortion processing module, configured to: perform predistortion processing on an input intermediate frequency signal by performing nonlinear modeling according to the first auxiliary coefficient and the predistortion coefficient.
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公开(公告)号：US10075324B2
公开(公告)日：2018-09-11
申请号：US15599956
申请日：2017-05-19
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yanqing Zhao , Chunlei Yu , Tingjian Tian
CPC classification number: H04L27/368 , H03F1/3247 , H03F1/3258 , H03F1/3294 , H03F3/189 , H03F3/245 , H03F2200/102 , H03F2201/32 , H03F2201/3233 , H04L25/03343
Abstract: A predistortion processing apparatus: an auxiliary feedback module, configured to: extract a nonlinear distortion signal from an analog signal, and input an obtained feedback signal corresponding to the nonlinear distortion signal into an auxiliary model coefficient training module; the auxiliary model coefficient training module, configured to: train an auxiliary coefficient according to the feedback signal and a predistortion signal, and transmit a first auxiliary coefficient obtained through training to a predistortion processing module; a radio frequency signal feedback module, configured to extract a fundamental wave feedback signal; a predistortion model coefficient training module, configured to: train a predistortion coefficient according to the predistortion signal and the fundamental wave feedback signal, and transmit an obtained predistortion coefficient to the predistortion processing module; the predistortion processing module, configured to: perform predistortion processing on an input intermediate frequency signal by performing nonlinear modeling according to the first auxiliary coefficient and the predistortion coefficient.
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