-
1.发明授权
公开(公告)号：EP2352231B1
公开(公告)日：2018-09-19
申请号：EP09827156.2
申请日：2009-10-20
发明人： YUAN, Jinhong , NING, Jun , LIU, Yue , YAN, Xi , WANG, Guangjian , ZENG, Yanxing , LEUNG, Raymond, W.K.
CPC分类号： H03M13/6516 , H03M13/116
摘要： A method for encoding or decoding an LDPC code with variable code lengths is provided in an embodiment of the present invention. The method includes: obtaining a base exponential matrix of an LDPC code and grouping code lengths during construction of the base exponential matrix; correcting the base exponential matrix according to a grouping correction factor to obtain an exponential matrix of the group corresponding to the grouping correction factor; extending the exponential matrix by using an extension factor of a code length in the group to obtain an LDPC matrix corresponding to the code length; and implementing encoding or decoding by using the LDPC matrix. The method for encoding or decoding an LDPC code with variable code lengths provided in an embodiment of the present invention can be used to ensure that no small cycles occur at each required code length of the LDPC code obtained through multiple constructions. Thus, the performance can be greatly improved. In addition, a device for encoding or decoding, an encoder, and a decoder are provided in embodiments of the present invention.
-
公开(公告)号：EP2830272A1
公开(公告)日：2015-01-28
申请号：EP13778179.5
申请日：2013-03-22
发明人： DIMITRI, Riabkov , YAN, Xi , WANG, Guangjian
CPC分类号： H04L1/0054 , H04L25/067 , H04L27/38
摘要： 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 r j and a phase angle ϕ y of a receive signal, an amplitude r x j and a phase angle ϕ x j of each constellation point x j in a decision constellation point set, and a standard deviation σ n of Gaussian noise and a standard deviation σ θ of phase noise; calculating, according to the symbol probability parameter, a symbol probability that a transmit signal is each constellation point x j 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.
摘要翻译： 本发明提供了一种信号解调方法和装置。 该方法包括：获取符号概率参数，该符号概率参数包括：判决星座点集合中每个星座点xj的接收信号幅度rj和相位角φy，幅度rxj和相位角φxj， 以及高斯噪声的标准偏差σn和相位噪声的标准偏差σθ; 根据所述符号概率参数，计算发送信号为所述决策星座点集合中每个星座点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。
-
公开(公告)号：EP3043487A1
公开(公告)日：2016-07-13
申请号：EP13895693.3
申请日：2013-10-14
发明人： HUANG, Huang , YAN, Xi , BENEDETTO, Sergio , MONTORSI, Guido
IPC分类号： H04B7/04
CPC分类号： H04L65/80 , H04B7/0413 , H04J11/00 , H04L5/0048 , H04L5/12 , H04L27/2662 , H04L27/2675
摘要： Embodiments of the present invention provide a signal processing method, an apparatus, and a system, which are applied to the communications field and can improve precision of phase noise compensation during signal processing in a MIMO-OFDM system in which receive antennas or transmit antennas do not share a common oscillator and reduce cases of signal distortion. The signal processing method is applied to a receiving apparatus, and includes: acquiring a phase of each of transmit antennas when the l th OFDM data symbol is sent; acquiring a phase of each of receive antennas when the l th OFDM data symbol is received; and compensating received signals of each of the receive antennas according to the phase of each of the transmit antennas when the l th OFDM data symbol is sent and the phase of each of the receive antennas when the l th OFDM data symbol is received and by using a compensation formula, to obtain compensated signals of each receive antenna. The embodiments of the present invention provide a signal processing method, an apparatus, and a system, which are used for signal processing.
摘要翻译： 本发明实施例提供了一种应用于通信领域的信号处理方法，装置和系统，可以提高接收天线或发射天线所在的MIMO-OFDM系统信号处理过程中的相位噪声补偿精度 不共用一个共同的振荡器并减少信号失真的情况。 该信号处理方法应用于接收装置，包括：当发送第l个OFDM数据符号时，获取每个发射天线的相位; 当接收到第l个OFDM数据符号时，获取每个接收天线的相位; 以及根据当发送第l个OFDM数据符号时的每个发送天线的相位和当接收第l个OFDM数据符号时每个接收天线的相位并通过使用补偿来补偿每个接收天线的接收信号 公式，以获得每个接收天线的补偿信号。 本发明实施例提供了一种信号处理方法，装置和系统，用于信号处理。
-
公开(公告)号：EP2830272B1
公开(公告)日：2016-05-25
申请号：EP13778179.5
申请日：2013-03-22
发明人： DMITRI, Riabkov , YAN, Xi , WANG, Guangjian
CPC分类号： H04L1/0054 , H04L25/067 , H04L27/38
-
公开(公告)号：EP3043487B1
公开(公告)日：2018-08-08
申请号：EP13895693.3
申请日：2013-10-14
发明人： HUANG, Huang , YAN, Xi , BENEDETTO, Sergio , MONTORSI, Guido
CPC分类号： H04L65/80 , H04B7/0413 , H04J11/00 , H04L5/0048 , H04L5/12 , H04L27/2662 , H04L27/2675
摘要： Embodiments of the present invention provide a signal processing method, an apparatus, and a system, which are applied to the communications field and can improve precision of phase noise compensation during signal processing in a MIMO-OFDM system in which receive antennas or transmit antennas do not share a common oscillator and reduce cases of signal distortion. The signal processing method is applied to a receiving apparatus, and includes: acquiring a phase of each of transmit antennas when the l th OFDM data symbol is sent; acquiring a phase of each of receive antennas when the l th OFDM data symbol is received; and compensating received signals of each of the receive antennas according to the phase of each of the transmit antennas when the l th OFDM data symbol is sent and the phase of each of the receive antennas when the l th OFDM data symbol is received and by using a compensation formula, to obtain compensated signals of each receive antenna. The embodiments of the present invention provide a signal processing method, an apparatus, and a system, which are used for signal processing.
-
6.发明公开
公开(公告)号：EP2991236A1
公开(公告)日：2016-03-02
申请号：EP13884425.3
申请日：2013-10-18
发明人： HUANG, Huang , YAN, Xi , WANG, Guangjian
CPC分类号： H04L25/0204 , H04B7/0413 , H04B7/0615 , H04L5/0007 , H04L25/0224 , H04L25/0228 , H04L27/261 , H04L27/2647 , H04L2027/003
摘要： Embodiments of the present invention provide a multiple-input multiple-output orthogonal frequency division multiplexing communication system and 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, and M and N are integers larger than 1; determining, by the receiver, channel estimation parameters and channel phase shift parameters from the M transmitting antennas of the remote transmitter to the N receiving antennas of the receiver according to the measurement signals of the M transmitting antennas of the remote transmitter; and determining, by the receiver, signal compensation from the M transmitting antennas of the remote transmitter to the N receiving antennas of the receiver 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, the channel estimation parameters and the channel phase shift parameters are determined according to the measurement signals of the remote transmitter, and the signal compensation is further determined, thereby improving accuracy of an estimated value of transmitted data.
摘要翻译： 本发明实施例提供了一种多输入多输出正交频分复用通信系统及信号补偿方法。 该方法包括：接收机通过N个接收天线接收远端发射机的M个发射天线发送的多个信道估计前导信号，其中，所述多个信道估计前导信号中包含M个发射天线的测量信号，M N是大于1的整数; 所述接收机根据所述远端发射机的M个发射天线的测量信号，确定所述远端发射机的M个发射天线到所述接收机的N个接收天线的信道估计参数和信道相位偏移参数; 所述接收机根据所述信道估计参数和所述信道相移参数，确定所述远端发射机的M个发射天线到所述接收机的N个接收天线的信号补偿。 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，根据远端的测量信号确定信道估计参数和信道相移参数 发射机，并且进一步确定信号补偿，由此提高发送数据的估计值的精度。
-
7.发明公开TRANSMITTING CIRCUIT, TRANSCEIVER, COMMUNICATION SYSTEM AND METHOD FOR TRANSMITTING DATA 审中-公开传输电路，收发器，通信系统和传输数据的方法
公开(公告)号：EP2874318A1
公开(公告)日：2015-05-20
申请号：EP13825847.0
申请日：2013-05-23
发明人： TONG, Wen , WANG, Guangjian , HUANG, Huang , YAN, Xi , LIU, Kunpeng
IPC分类号： H04B1/04
CPC分类号： H04L27/2627 , H04B1/0007 , H04B1/0053 , H04B7/068 , H04L27/2649
摘要： The present invention provides 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 receive N sub digital signal flows, and modulate the N sub digital signal flows to obtain N modulated signals; a frequency relocation circuit, configured to receive the N modulated signals, and 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, so that the radio frequency signal is sent by an antenna. The present invention can reduce the signal processing complexity of a transmitting circuit, thereby improving system performance.
摘要翻译： 本发明提供一种发送电路，收发器，通信系统以及数据传输方法。 发送电路包括：数字接口电路，用于在预定带宽内获取待发送数据，并将数据分解为N路并行子数字信号流; 数字调制电路，被配置为接收N个子数字信号流，并且调制所述N个子数字信号流以获得N个调制信号; 频率再配置电路，用于接收所述N路调制信号，并对所述N路调制信号进行频率再配置; 合成器，用于将所述已经过频率重定位的N个调制信号中的M个调制信号调制为带宽信号; 数模转换器，用于接收带宽信号，并对带宽信号进行数模转换，得到模拟信号; 上变频电路，用于接收模拟信号，并将模拟信号转换为射频信号，以通过天线发送射频信号。 本发明可以降低发射电路的信号处理复杂度，从而提高系统性能。
-
公开(公告)号：EP2874318B1
公开(公告)日：2019-01-30
申请号：EP13825847.0
申请日：2013-05-23
发明人： TONG, Wen , WANG, Guangjian , HUANG, Huang , YAN, Xi , LIU, Kunpeng
IPC分类号： H04B1/00
-
公开(公告)号：EP3413488A1
公开(公告)日：2018-12-12
申请号：EP17765647.7
申请日：2017-01-20
发明人： YAN, Xi , MA, Huixiao , LEUNG, Wai Kong Raymond , LUO, Long , CUI, Yan
IPC分类号： H04L1/00
CPC分类号： H04L1/00
摘要： 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. As a result, a first bit corresponding to the second-type symbol is definitely from another code word different from the first code word. A bit in the second-type symbol and from the another code word may be demodulated by using information about the first code word, so that the bit in the second-type symbol and from the another code word can be demodulated more accurately, thereby lowering a signal-to-noise ratio requirement during higher order modulation.
-
公开(公告)号：EP2830272A8
公开(公告)日：2015-03-18
申请号：EP13778179.5
申请日：2013-03-22
发明人： DMITRI, Riabkov , YAN, Xi , WANG, Guangjian
CPC分类号： H04L1/0054 , H04L25/067 , H04L27/38
摘要： 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 r j and a phase angle ϕ y of a receive signal, an amplitude r x j and a phase angle ϕ x j of each constellation point x j in a decision constellation point set, and a standard deviation σ n of Gaussian noise and a standard deviation σ θ of phase noise; calculating, according to the symbol probability parameter, a symbol probability that a transmit signal is each constellation point x j 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.
-
-
-
-
-
-
-
-
-
搜索结果
11 条记录 (耗时 0.011 秒)
