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公开(公告)号：US10225311B2
公开(公告)日：2019-03-05
申请号：US15098141
申请日：2016-04-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huang Huang , Xi Yan , Sergio Benedetto , Guido Montorsi
Abstract: Embodiments of the present disclosure provide a signal processing method, an apparatus, and a system. The signal processing method includes acquiring a phase of each of transmit antennas when the lth OFDM data symbol is sent, and acquiring a phase of each of receive antennas when the lth OFDM data symbol is received. The method further includes compensating received signals of each of the receive antennas according to the phase of each of the transmit antennas when the lth OFDM data symbol is sent and the phase of each of the receive antennas when the lth OFDM data symbol is received, to obtain compensated signals of each receive antenna.
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公开(公告)号：US10523487B2
公开(公告)日：2019-12-31
申请号：US15341543
申请日：2016-11-02
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Huang Huang , Xi Yan , Sainan Li
Abstract: Embodiments of the present invention provide a frame synchronization method and apparatus, which can reduce impact of a carrier frequency offset. In those embodiment, a solution is provided and the solution includes: obtaining a received signal of a receiving antenna; calculating an auto-correlation value of the received signal and determining a time corresponding to the auto-correlation value that is of the received signal and that meets a first preset condition, as an initial estimation time; obtaining a carrier frequency offset estimation value according to the initial estimation time, the received signal, and a frequency offset estimation algorithm, and performing frequency offset compensation on the received signal by using the carrier frequency offset estimation value; calculating a cross-correlation value and an auto-correlation value of the received signal on which the frequency offset compensation has been performed. The embodiments of the present invention are used for frame synchronization.
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3.发明授权公开(公告)号：US09473326B2
公开(公告)日：2016-10-18
申请号：US14942928
申请日：2015-11-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huang Huang , Xi Yan , Guangjian Wang
CPC classification number: H04L25/0204 , H04B7/0413 , H04B7/0615 , H04L5/0007 , H04L25/0224 , H04L25/0228 , H04L27/261 , H04L27/2647 , H04L2027/003
Abstract: Embodiments of the present invention provide a method for signal compensation. The method includes: receiving, by a receiver via N receiving antennas, a plurality of channel estimation preamble signals sent by M transmitting antennas of a remote transmitter, wherein the plurality of channel estimation preamble signals contain measurement signals of the M transmitting antennas; determining, by the receiver, channel estimation parameters and channel phase shift parameters according to the measurement signals of the M transmitting antennas of the remote transmitter; and determining, by the receiver, signal compensation according to the channel estimation parameters and the channel phase shift parameters. According to the method for signal compensation and the multiple-input multiple-output orthogonal frequency division multiplexing communication system provided by the embodiments of the present invention, accuracy of an estimated value of transmitted data is improved.
Abstract translation: 本发明的实施例提供了一种用于信号补偿的方法。 该方法包括：通过N个接收天线由接收机接收由远程发射机的M个发射天线发送的多个信道估计前导信号，其中多个信道估计前导信号包含M个发射天线的测量信号; 根据远程发射机的M个发射天线的测量信号，由接收机确定信道估计参数和信道相移参数; 以及由接收机根据信道估计参数和信道相移参数确定信号补偿。 根据本发明实施例提供的信号补偿方法和多输入多输出正交频分复用通信系统，提高了传输数据估计值的精度。
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公开(公告)号：US09172500B2
公开(公告)日：2015-10-27
申请号：US14516126
申请日：2014-10-16
Applicant: Huawei Technologies Co., Ltd.
Inventor： Dmitri Riabkov , Xi Yan , Guangjian Wang
CPC classification number: H04L1/0054 , H04L25/067 , H04L27/38
Abstract: The present invention provides a signal demodulation method and device. The method includes: obtaining a symbol probability parameter, where the symbol probability parameter comprises: an amplitude ry and a phase angle φy of a receive signal, an amplitude rxj and a phase angle φxj of each constellation point xj in a decision constellation point set, and a standard deviation σn of Gaussian noise and a standard deviation πθ of phase noise; calculating, according to the symbol probability parameter, a symbol probability that a transmit signal is each constellation point xj in the decision constellation point set; and performing demodulation according to the symbol probability, and outputting demodulation information. The present invention improves an anti-phase-noise capability.
Abstract translation: 本发明提供一种信号解调方法和装置。 该方法包括：获得符号概率参数，其中符号概率参数包括：接收信号的振幅ry和相位角＆amp; y，决策中每个星座点xj的振幅rxj和相位角＆lt; xj 星座点集，以及高斯噪声和标准偏差的标准偏差＆amp; 的相位噪声; 根据符号概率参数，计算发射信号在决策星座点集合中的每个星座点xj的符号概率; 并根据符号概率进行解调，并输出解调信息。 本发明提高了抗相位噪声能力。
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Patent Agency Ranking
5.发明申请Transmitting Circuit, Transceiver, Communication System, and Method for Transmitting Data 有权传输电路，收发器，通信系统和传输数据的方法公开(公告)号：US20150139348A1
公开(公告)日：2015-05-21
申请号：US14610667
申请日：2015-01-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wen Tong , Guangjian Wang , Huang Huang , Xi Yan , Kunpeng Liu
CPC classification number: H04L27/2627 , H04B1/0007 , H04B1/0053 , H04B7/068 , H04L27/2649
Abstract: A transmitting circuit, a transceiver, a communication system, and a method for transmitting data. The transmitting circuit includes a digital interface circuit configured to obtain, in a predetermined bandwidth, data to be sent, and decompose the data into N parallel sub digital signal flows; a digital modulation circuit configured to modulate the N sub digital signal flows to obtain N modulated signals; a frequency relocation circuit configured to perform frequency relocation on the N modulated signals; a synthesizer configured to modulate M modulated signals of the N modulated signals that have undergone frequency relocation into a bandwidth signal; a digital to analog converter configured to receive the bandwidth signal, and perform digital to analog conversion on the bandwidth signal to obtain an analog signal; an up-conversion circuit configured to receive the analog signal, and convert the analog signal into a radio frequency signal.
Abstract translation: 发送电路，收发器，通信系统以及发送数据的方法。 发送电路包括：数字接口电路，被配置为以预定带宽获得要发送的数据，并将数据分解成N个并行子数字信号流; 数字调制电路，被配置为调制N个子数字信号流以获得N个调制信号; 频率重定位电路，被配置为对所述N个调制信号执行频率重定位; 合成器，被配置为将经过频率重定位的N个调制信号的M个调制信号调制成带宽信号; 配置为接收带宽信号的数模转换器，并对带宽信号进行数模转换以获得模拟信号; 上变频电路，被配置为接收模拟信号，并将模拟信号转换成射频信号。
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公开(公告)号：US11283545B2
公开(公告)日：2022-03-22
申请号：US16887915
申请日：2020-05-29
Applicant: HUAWEI TECHNOLOGIES CO., LTD.
Inventor： Xi Yan , Huixiao Ma , Wai Kong Raymond Leung , Long Luo , Yan Cui
Abstract: Embodiments of this application provide a modulation method and apparatus. The method includes: receiving a code word sequence, where each code word includes N bits, and the code word sequence includes at least a first code word; mapping the code word sequence into M sequences, where each sequence includes N/M bits from the first code word; mapping the M sequences into a symbol sequence, where each symbol is corresponding to M bits, the M bits are respectively from the M sequences, first bits corresponding to N/M first-type symbols are from the first code word, and second bits corresponding to N/M second-type symbols are from the first code word. Thus a signal-to-noise ratio requirement during higher order modulation lowered.
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公开(公告)号：US10673563B2
公开(公告)日：2020-06-02
申请号：US16130293
申请日：2018-09-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Xi Yan , Huixiao Ma , Wai Kong Raymond Leung , Long Luo , Yan Cui
Abstract: Embodiments of this application provide a modulation method and apparatus. The method includes: receiving a code word sequence, where each code word includes N bits, and the code word sequence includes at least a first code word; mapping the code word sequence into M sequences, where each sequence includes N/M bits from the first code word; mapping the M sequences into a symbol sequence, where each symbol is corresponding to M bits, the M bits are respectively from the M sequences, first bits corresponding to N/M first-type symbols are from the first code word, and second bits corresponding to N/M second-type symbols are from the first code word. Thus a signal-to-noise ratio requirement during higher order modulation lowered.
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8.发明授权公开(公告)号：US09712363B2
公开(公告)日：2017-07-18
申请号：US14610667
申请日：2015-01-30
Applicant: Huawei Technologies Co., Ltd.
Inventor： Wen Tong , Guangjian Wang , Huang Huang , Xi Yan , Kunpeng Liu
CPC classification number: H04L27/2627 , H04B1/0007 , H04B1/0053 , H04B7/068 , H04L27/2649
Abstract: A transmitting circuit, a transceiver, a communication system, and a method for transmitting data. The transmitting circuit includes a digital interface circuit configured to obtain, in a predetermined bandwidth, data to be sent, and decompose the data into N parallel sub digital signal flows; a digital modulation circuit configured to modulate the N sub digital signal flows to obtain N modulated signals; a frequency relocation circuit configured to perform frequency relocation on the N modulated signals; a synthesizer configured to modulate M modulated signals of the N modulated signals that have undergone frequency relocation into a bandwidth signal; a digital to analog converter configured to receive the bandwidth signal, and perform digital to analog conversion on the bandwidth signal to obtain an analog signal; an up-conversion circuit configured to receive the analog signal, and convert the analog signal into a radio frequency signal.
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公开(公告)号：US20160234283A1
公开(公告)日：2016-08-11
申请号：US15098141
申请日：2016-04-13
Applicant: Huawei Technologies Co., Ltd.
Inventor： Huang Huang , Xi Yan , Sergio Benedetto , Guido Montorsi
CPC classification number: H04L65/80 , H04B7/0413 , H04J11/00 , H04L5/0048 , H04L5/12 , H04L27/2662 , H04L27/2675
Abstract: Embodiments of the present disclosure provide a signal processing method, an apparatus, and a system. The signal processing method includes acquiring a phase of each of transmit antennas when the lth OFDM data symbol is sent, and acquiring a phase of each of receive antennas when the lth OFDM data symbol is received. The method further includes compensating received signals of each of the receive antennas according to the phase of each of the transmit antennas when the lth OFDM data symbol is sent and the phase of each of the receive antennas when the lth OFDM data symbol is received, to obtain compensated signals of each receive antenna.
Abstract translation: 本公开的实施例提供了一种信号处理方法，装置和系统。 信号处理方法包括当发送第十OFDM数据符号时获取每个发送天线的相位，并且当接收到第十个OFDM数据符号时获取每个接收天线的相位。 该方法还包括当发送第十OFDM数据符号时，根据每个发射天线的相位补偿每个接收天线的接收信号，并且当接收到第十个OFDM数据符号时每个接收天线的相位被修改为 获得每个接收天线的补偿信号。
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