-
公开(公告)号：US10560132B2
公开(公告)日：2020-02-11
申请号：US15369532
申请日：2016-12-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Yunfu Dou , Tingjian Tian , Yanqing Zhao
Abstract: The present application discloses a reconfigurable transmitter and receiver, and methods for reconfiguring the same. A system adaptive control circuit generates a control signal according to frequency band information of an input signal; a system clock circuit generates a system clock; a preprocessing circuit preprocesses a received baseband signal according to the system clock and the control signal, to generate a frequency band signal; a digital intermediate frequency processing circuit processes the frequency band signal according to the system clock and the control signal, to generate a digital intermediate frequency signal; a digital-to-analog conversion circuit processes the digital intermediate frequency signal according to the system clock and the control signal, to generate an analog signal; and an analog transmitting circuit transmits the analog signal.
-
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.
-
公开(公告)号：US09768811B2
公开(公告)日：2017-09-19
申请号：US15338079
申请日：2016-10-28
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tingjian Tian , Yanqing Zhao , Yunfu Dou
CPC classification number: H04B1/0475 , H04B2001/0425 , H04B2001/0433 , H04L27/368
Abstract: Embodiments of the present invention disclose a pre-distortion system, including a pre-distortion circuit, a transmission circuit, a power amplifier, a feedback circuit, and a learning circuit. The pre-distortion circuit acquires an in-band intermodulation distortion model coefficient vector, a cross-band modulation distortion model coefficient vector, and an out-of-band intermodulation distortion model coefficient vector that are learned by the learning circuit according to an output signal of the power amplifier, and performs pre-distortion processing on an input digital intermediate frequency signal. Correspondingly, the embodiments of the present invention further disclose a pre-distortion method, which can eliminate impact caused by out-of-band intermodulation distortion on the power amplifier.
-
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.
-
-
-
Search Results
4
records
(took 0.015 seconds)
