-
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.
-
Patent Agency Ranking
公开(公告)号：US20170302490A1
公开(公告)日：2017-10-19
申请号：US15636748
申请日：2017-06-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jing Qiu , Tingjian Tian , Yunfu Dou
CPC classification number: H04L27/2623 , H04L27/2626 , H04W72/04 , H04W72/0453
Abstract: A signal clipping processing method and a device, the method including performing peak detection on an input signal, so as to obtain amplitude information, phase information, and location information of a peak signal of the input signal; obtaining, according to amplitude information and phase information of each peak signal, a peak forming factor corresponding to each peak signal, and separately outputting, according to location information of each peak signal, a corresponding cancellation pulse sequence; and calculating a sum of products of peak forming factors corresponding to all peak signals and cancellation pulse sequences corresponding to all the peak signals, so as to obtain a clipping noise, and using a difference between the input signal and the clipping noise as a signal obtained after clipping processing.
-
公开(公告)号：US09319117B2
公开(公告)日：2016-04-19
申请号：US14677402
申请日：2015-04-02
Applicant: Huawei Technologies Co., Ltd.
Inventor： Hua Yan , Tingjian Tian , Lei Chen
CPC classification number: H04B7/0417 , H04B7/0456 , H04B7/0482 , H04B7/06 , H04B7/0689 , H04L1/0025 , H04L25/0204 , H04L25/0224 , H04L25/03343
Abstract: Embodiments of the present invention disclose a codeword feedback method and a receiver, which relate to the field of communication technologies. The method includes: determining a precoding type used for downlink signal transmission, or receiving codebook indication signaling transmitted by a transmitter; selecting a codebook according to the precoding type, or selecting a codebook according to the codebook indication signaling; and selecting a codeword according to the codebook, and feeding back the codeword to the transmitter. The present invention can provide a new feedback mechanism for channel state information and a non-linear precoding codebook when needing to use both linear precoding and non-linear precoding, so that a communication system can select an appropriate precoding codebook to feed back state information according to different needs, thereby improving the performance of the communication system.
Abstract translation: 本发明的实施例公开了与通信技术领域有关的码字反馈方法和接收机。 该方法包括：确定用于下行链路信号传输的预编码类型，或者接收由发射机发送的码本指示信令; 根据预编码类型选择码本，或根据码本指示信令选择码本; 以及根据码本选择码字，并将码字反馈给发射机。 本发明可以在需要使用线性预编码和非线性预编码时提供用于信道状态信息和非线性预编码码本的新反馈机制，使得通信系统可以选择适当的预编码码本来反馈状态信息 满足不同需求，从而提高通信系统的性能。
-
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：US10212013B2
公开(公告)日：2019-02-19
申请号：US15636748
申请日：2017-06-29
Applicant: Huawei Technologies Co., Ltd.
Inventor： Jing Qiu , Tingjian Tian , Yunfu Dou
Abstract: A signal clipping processing method and a device, the method including performing peak detection on an input signal, so as to obtain amplitude information, phase information, and location information of a peak signal of the input signal; obtaining, according to amplitude information and phase information of each peak signal, a peak forming factor corresponding to each peak signal, and separately outputting, according to location information of each peak signal, a corresponding cancellation pulse sequence; and calculating a sum of products of peak forming factors corresponding to all peak signals and cancellation pulse sequences corresponding to all the peak signals, so as to obtain a clipping noise, and using a difference between the input signal and the clipping noise as a signal obtained after clipping processing.
-
公开(公告)号：US09438323B2
公开(公告)日：2016-09-06
申请号：US14933763
申请日：2015-11-05
Applicant: Huawei Technologies Co., Ltd.
Inventor： Tingjian Tian , Hua Yan , Lei Chen
CPC classification number: H04B7/0421 , H04B1/0475 , H04B7/02 , H04B7/0456 , H04B7/0617 , H04L29/06
Abstract: Disclosed are a method and device for sending a user-specific reference signal. The method provided in the present invention includes: determining a modulus identification, and performing interference elimination processing on a user-specific reference signal according to the modulus identification to obtain the user-specific reference signal after the interference elimination processing; performing beamforming processing on the user-specific reference signal after the interference elimination processing to obtain a beamforming reference signal; and performing inverse fast fourier transform (IFFT) and digital-analog conversion on the beamforming reference signal to obtain an analog signal of the user-specific reference signal, and sending the analog signal to a user terminal.
Abstract translation: 公开了用于发送用户特定参考信号的方法和装置。 本发明提供的方法包括：确定模数识别，并根据模数识别对用户专用参考信号执行干扰消除处理，以获得干扰消除处理后的用户特定参考信号; 在干扰消除处理之后对用户专用参考信号执行波束成形处理以获得波束成形参考信号; 并对波束成形参考信号执行反向快速傅里叶变换（IFFT）和数模转换，以获得用户特定参考信号的模拟信号，并将模拟信号发送到用户终端。
-
-
-
-
-
-
Search Results
7
records
(took 0.015 seconds)
