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1. 发明授权

US08743911B2 Synchronization method and device 有权
标题翻译：同步方法和设备
公开(公告)号：US08743911B2
公开(公告)日：2014-06-03
申请号：US13257920
申请日：2010-03-25
申请人： Yueyi You , Qiang Li , Ning Qiu , Nanshan Cao , Tao Zhang
发明人： Yueyi You , Qiang Li , Ning Qiu , Nanshan Cao , Tao Zhang
IPC分类号： H04J3/06
CPC分类号： H04L27/2656 , H04L27/2675
摘要： A synchronization method is disclosed, including: obtaining a synchronization symbol position {circumflex over (d)}0 of one time slot of an initial update period; taking Ntrack frames as an update period to adjust the synchronization symbol position, and the step of adjusting the synchronization symbol position including: obtaining a synchronization symbol position {circumflex over ({circumflex over (d)}k+1=dk+Ntrack{circumflex over (T)}k of a corresponding time slot of a (k+1)th update period according to a synchronization symbol position {circumflex over (d)}k of a corresponding time slot of a kth update period and an inter-frame sampling derivation estimation value {circumflex over (T)}k of said kth update period; obtaining synchronization symbol positions of other time slots in said kth update period according to the synchronization symbol position {circumflex over (d)}k of the corresponding time slot of the kth update period and the inter-frame sampling derivation estimation value {circumflex over (T)}k of said kth update period. A synchronization apparatus is also disclosed. The method and apparatus reduces synchronization calculation amount.
摘要翻译：公开了一种同步方法，其包括：获得初始更新周期的一个时隙的同步符号位置{（d）} 0; 将Ntrack帧作为更新周期来调整同步符号位置，以及调整同步符号位置的步骤包括：获得同步符号位置{circumflex over（{circumflex over（d）} k + 1 = dk + Ntrack {circumflex 根据第k个更新周期的对应时隙的同步符号位置{（d）} k的第（k + 1）个更新周期的相应时隙，超过（T）} k个k 根据所述第k个更新周期的采样导出估计值{（f）（k）），根据相应时隙的同步符号位置{（d）} k获得所述第k个更新周期中的其他时隙的同步符号位置以及所述第k个更新周期的帧间采样导出估计值（在（T）} k的转换，同时还公开了同步装置，该方法和装置减少了同步计算 nt。

2. 发明申请

US20120114031A1 OFDM signal demodulation method and device thereof 有权
标题翻译： OFDM信号解调方法及其装置
公开(公告)号：US20120114031A1
公开(公告)日：2012-05-10
申请号：US13259038
申请日：2010-04-23
申请人： Qiang Li , Ning Qiu , Nanshan Cao
发明人： Qiang Li , Ning Qiu , Nanshan Cao
IPC分类号： H04L27/06 , H04L27/01
CPC分类号： H04L25/03159 , H04L25/0216 , H04L25/022 , H04L27/2607 , H04L27/2657 , H04L27/2665 , H04L27/2672 , H04L27/2676 , H04L27/2695 , H04L2025/03414
摘要： The present invention discloses an OFDM signal demodulation method and device thereof. The method comprises: adding a pre-obtained timing offset estimation value of an OFDM signal demodulation device to the initial position of an OFDM symbol of a received signal to obtain a window deviation value of the OFDM symbol; adding a channel time delay extension to the window deviation value to obtain a combined prefix initial position; calculating the combined OFDM signal value starting from the prefix initial position; processing the Fast Fourier Transform (FFT) for the combined OFDM signal value to obtain a frequency domain data subcarrier signal; calculating the frequency domain original channel estimation value processing the channel estimation based on the original channel estimation value phase modification of the OFDM symbol according to the channel estimation compensation indication value; and processing equalization and detection for the frequency domain data subcarrier signal according to the channel estimation result. The present invention uses the cycle prefix of the received signals to promote the demodulation performance of the OFDM signal demodulation device.
摘要翻译：本发明公开了一种OFDM信号解调方法及其装置。该方法包括：将预先获得的OFDM信号解调装置的定时偏移估计值加到接收信号的OFDM符号的初始位置，以获得OFDM符号的窗口偏移值; 向窗口偏差值增加一个通道时间延迟以获得组合的前缀初始位置; 从前缀初始位置开始计算组合的OFDM信号值; 处理用于组合的OFDM信号值的快速傅立叶变换（FFT）以获得频域数据子载波信号; 根据信道估计补偿指示值，根据OFDM符号的原始信道估计值相位修正来计算频域原始信道估计值处理信道估计值; 以及根据信道估计结果处理频域数据子载波信号的均衡和检测。本发明使用接收信号的周期前缀来促进OFDM信号解调装置的解调性能。

3. 发明授权

US08677222B2 Method and device for decoding Reed-Solomon (RS) code 有权
标题翻译：用于解码里德 - 所罗门（RS）代码的方法和设备
公开(公告)号：US08677222B2
公开(公告)日：2014-03-18
申请号：US13258449
申请日：2010-05-04
申请人： Yueyi You , Qiang Li , Ning Qiu , Nanshan Cao , Tao Zhang
发明人： Yueyi You , Qiang Li , Ning Qiu , Nanshan Cao , Tao Zhang
IPC分类号： H03M13/00
CPC分类号： H03M13/1515 , H03M13/3715 , H03M13/451 , H03M13/458 , H03M13/616
摘要： The embodiments of the invention disclose a method and a device for decoding an RS code, the method comprising: receiving bit reliability information of the RS code output by a channel, performing a hard decision on the bit reliability information to obtain a hard-decision result value sequence; determining a type of an error of the hard-decision result value sequence according to an initial check array corresponding to an encoding mode of the RS code; according to preset corresponding relationships between types of errors of the hard-decision result value sequence and error-correcting modes capable of correcting the errors, determining an error-correcting mode corresponding to the type of the error of the hard-decision result value sequence, and performing a bit error correction on the hard-decision result value sequence according to the determined error-correcting mode; outputting the hard-decision result value sequence after the bit error correction as a decoding result.
摘要翻译：本发明的实施例公开了一种用于对RS码进行解码的方法和装置，该方法包括：接收由信道输出的RS码的比特可靠性信息，对比特可靠性信息进行硬判决以获得硬判决结果价值序列根据与RS码的编码模式相对应的初始检查阵列，确定硬判决结果值序列的错误的类型; 根据硬判决结果值序列的错误类型和能够校正错误的纠错模式之间的预设对应关系，确定与硬判定结果值序列的错误类型对应的纠错模式，以及根据所确定的纠错模式对所述硬判定结果值序列进行位纠错; 在比特纠错之后输出硬判决结果值序列作为解码结果。

4. 发明授权

US08667378B2 Decoding method and device for concatenated code 有权
标题翻译：连接代码的解码方法和设备
公开(公告)号：US08667378B2
公开(公告)日：2014-03-04
申请号：US13512196
申请日：2010-10-22
申请人： Tao Zhang , Yueyi You , Nanshan Cao , Yangzhong Yao
发明人： Tao Zhang , Yueyi You , Nanshan Cao , Yangzhong Yao
IPC分类号： H03M13/00 , H03M13/03 , G06F11/00
CPC分类号： H03M13/2906 , H03M13/1102 , H03M13/1128 , H03M13/1515 , H03M13/3715 , H03M13/373
摘要： Disclosed are a decoding method and device for concatenated code, for the decoding of concatenated code composed of low density parity code (LDPC) and Reed-Solomon (RS) code. The method includes carrying out LDPC soft decision iterative decoding on bit de-interleaved data flow, and carrying out check decision on LDPC codeword obtained from decoding by using a check matrix; carrying out de-byte-interleave on an information bit of the LDPC codeword obtained from decoding and converting check information of the LDPC codeword into puncturing information of RS codeword; selecting a decoding mode according to the puncturing information of the RS codeword to carry out RS decoding. By way of the solution of the present invention, the RS decoding performance can be improved without increasing the computation complexity, thus greatly improving the receiving performance of the CMMB terminal as compared to the conventional method.
摘要翻译：公开了一种用于级联码的解码方法和装置，用于解码由低密度奇偶码（LDPC）和里德 - 所罗门（RS）码组成的级联码。该方法包括对比特解交织数据流执行LDPC软判决迭代解码，并通过使用校验矩阵对从解码获得的LDPC码进行校验决定; 在从解码获得的LDPC码字的信息比特上进行去字节交织，并将LDPC码字的检查信息转换成RS码字的删截信息; 根据RS码字的删截信息选择解码模式，进行RS解码。通过本发明的解决方案，可以在不增加计算复杂度的情况下提高RS解码性能，从而与常规方法相比大大提高了CMMB终端的接收性能。

5. 发明授权

US08582634B2 OFDM signal demodulation method and device thereof 有权
标题翻译： OFDM信号解调方法及其装置
公开(公告)号：US08582634B2
公开(公告)日：2013-11-12
申请号：US13259038
申请日：2010-04-23
申请人： Qiang Li , Ning Qiu , Nanshan Cao
发明人： Qiang Li , Ning Qiu , Nanshan Cao
IPC分类号： H04L27/06 , H04L27/01
CPC分类号： H04L25/03159 , H04L25/0216 , H04L25/022 , H04L27/2607 , H04L27/2657 , H04L27/2665 , H04L27/2672 , H04L27/2676 , H04L27/2695 , H04L2025/03414
摘要： The present invention discloses an OFDM signal demodulation method and device thereof. The method comprises: adding a pre-obtained timing offset estimation value of an OFDM signal demodulation device to the initial position of an OFDM symbol of a received signal to obtain a window deviation value of the OFDM symbol; adding a channel time delay extension to the window deviation value to obtain a combined prefix initial position; calculating the combined OFDM signal value starting from the prefix initial position; processing the Fast Fourier Transform (FFT) for the combined OFDM signal value to obtain a frequency domain data subcarrier signal; calculating the frequency domain original channel estimation value processing the channel estimation based on the original channel estimation value phase modification of the OFDM symbol according to the channel estimation compensation indication value; and processing equalization and detection for the frequency domain data subcarrier signal according to the channel estimation result. The present invention uses the cycle prefix of the received signals to promote the demodulation performance of the OFDM signal demodulation device.
摘要翻译：本发明公开了一种OFDM信号解调方法及其装置。该方法包括：将预先获得的OFDM信号解调装置的定时偏移估计值加到接收信号的OFDM符号的初始位置，以获得OFDM符号的窗口偏移值; 向窗口偏差值增加一个通道时间延迟以获得组合的前缀初始位置; 从前缀初始位置开始计算组合的OFDM信号值; 处理用于组合的OFDM信号值的快速傅立叶变换（FFT）以获得频域数据子载波信号; 根据信道估计补偿指示值，根据OFDM符号的原始信道估计值相位修正来计算频域原始信道估计值处理信道估计值; 以及根据信道估计结果处理频域数据子载波信号的均衡和检测。本发明使用接收信号的周期前缀来促进OFDM信号解调装置的解调性能。

6. 发明申请

US20120284584A1 DECODING METHOD AND DEVICE FOR CONCATENATED CODE 有权
标题翻译：解码方法和定义代码的设备
公开(公告)号：US20120284584A1
公开(公告)日：2012-11-08
申请号：US13512196
申请日：2010-10-22
申请人： Tao Zhang , Yueyi You , Nanshan Cao , Yangzhong Yao
发明人： Tao Zhang , Yueyi You , Nanshan Cao , Yangzhong Yao
IPC分类号： H03M13/29 , G06F11/10
CPC分类号： H03M13/2906 , H03M13/1102 , H03M13/1128 , H03M13/1515 , H03M13/3715 , H03M13/373
摘要： Disclosed are a decoding method and device for concatenated code, for the decoding of concatenated code composed of low density parity code (LDPC) and Reed-Solomon (RS) code. The method includes: carrying out LDPC soft decision iterative decoding on bit de-interleaved data flow, and carrying out check decision on LDPC codeword obtained from decoding by using a check matrix; carrying out de-byte-interleave on an information bit of the LDPC codeword obtained from decoding and converting check information of the LDPC codeword into puncturing information of RS codeword; selecting a decoding mode according to the puncturing information of the RS codeword to carry out RS decoding. By way of the solution of the present invention, the RS decoding performance can be improved without increasing the computation complexity, thus greatly improving the receiving performance of the CMMB terminal as compared to the conventional method.
摘要翻译：公开了一种用于级联码的解码方法和装置，用于解码由低密度奇偶码（LDPC）和里德 - 所罗门（RS）码组成的级联码。该方法包括：对比特解交织数据流执行LDPC软判决迭代解码，并通过使用校验矩阵对从解码获得的LDPC码进行校验决定; 在从解码获得的LDPC码字的信息比特上进行去字节交织，并将LDPC码字的检查信息转换成RS码字的删截信息; 根据RS码字的删截信息选择解码模式，进行RS解码。通过本发明的解决方案，可以在不增加计算复杂度的情况下提高RS解码性能，从而与常规方法相比大大提高了CMMB终端的接收性能。

7. 发明申请

US20110228884A1 METHOD AND DEVICE FOR FILTERING CHANNEL ESTIMATION RESULT IN ORTHOGONAL FREQUENCY DIVISION MULTIPLEXING 审中-公开
标题翻译：正交频分多路复用过滤通道估计结果的方法与装置
公开(公告)号：US20110228884A1
公开(公告)日：2011-09-22
申请号：US13132782
申请日：2009-09-03
申请人： Ning Qiu , Qiang Li , Li Chen , Nanshan Cao , Tao Zhang , Yueyi You
发明人： Ning Qiu , Qiang Li , Li Chen , Nanshan Cao , Tao Zhang , Yueyi You
IPC分类号： H04B1/10
CPC分类号： H04L25/022 , H04L5/0048 , H04L25/0234 , H04L27/2647
摘要： The invention provides a method and device for filtering orthogonal frequency division multiplexing (OFDM) channel estimate result, to solve the problems in the prior art that for channel estimate result filtering the realization is complex or the performance is poor. By embodiments the following method is described: transforming time domain synchronous symbols received by the terminal equipment to frequency domain synchronous symbols; computing frequency domain impulse response sequences based on the frequency domain synchronous symbols; adjusting least mean square (LMS) adaptive filter coefficients based on the frequency domain impulse response sequences; obtaining coefficients of the data symbol channel estimate result frequency domain filter based on the coefficients obtained from said adjusting; filtering the OFDM channel estimate result by using the data symbol channel estimate result frequency domain filter. The corresponding device is disclosed by the embodiments. There is less computation, simpler realization and better filtering performance provided with the OFDM channel estimate result frequency domain filter obtained from the technical solution of the present invention.
摘要翻译：本发明提供了一种用于过滤正交频分复用（OFDM）信道估计结果的方法和装置，以解决现有技术中对于信道估计结果过滤的复杂或性能差的问题。通过实施例描述了以下方法：将由终端设备接收的时域同步符号转换为频域同步符号; 基于频域同步符号计算频域脉冲响应序列; 基于频域脉冲响应序列调整最小均方（LMS）自适应滤波器系数; 基于从所述调整获得的系数，获得数据符号信道估计结果频域滤波器的系数; 通过使用数据符号信道估计结果频域滤波器对OFDM信道估计结果进行滤波。相应的装置由实施例公开。与从本发明的技术方案获得的OFDM信道估计结果频域滤波器相比，计算量少，实现更简单，滤波性能更好。

8. 发明申请

US20120166915A1 Method and Device for Decoding Reed-Solomon (RS) Code 有权
标题翻译：用于解码里德 - 所罗门（RS）代码的方法和设备
公开(公告)号：US20120166915A1
公开(公告)日：2012-06-28
申请号：US13258449
申请日：2010-05-04
申请人： Yueyi You , Qiang Li , Ning Qiu , Nanshan Cao , Tao Zhang
发明人： Yueyi You , Qiang Li , Ning Qiu , Nanshan Cao , Tao Zhang
IPC分类号： H03M13/07 , G06F11/10
CPC分类号： H03M13/1515 , H03M13/3715 , H03M13/451 , H03M13/458 , H03M13/616
摘要： The embodiments of the invention disclose a method and a device for decoding an RS code, the method comprising: receiving bit reliability information of the RS code output by a channel, performing a hard decision on the bit reliability information to obtain a hard-decision result value sequence; determining a type of an error of the hard-decision result value sequence according to an initial check array corresponding to an encoding mode of the RS code; according to preset corresponding relationships between types of errors of the hard-decision result value sequence and error-correcting modes capable of correcting the errors, determining an error-correcting mode corresponding to the type of the error of the hard-decision result value sequence, and performing a bit error correction on the hard-decision result value sequence according to the determined error-correcting mode; outputting the hard-decision result value sequence after the bit error correction as a decoding result.
摘要翻译：本发明的实施例公开了一种用于对RS码进行解码的方法和装置，该方法包括：接收由信道输出的RS码的比特可靠性信息，对比特可靠性信息进行硬判决以获得硬判决结果价值序列根据与RS码的编码模式相对应的初始检查阵列，确定硬判决结果值序列的错误的类型; 根据硬判决结果值序列的错误类型和能够校正错误的纠错模式之间的预设对应关系，确定与硬判决结果值序列的错误类型对应的纠错模式，以及根据所确定的纠错模式对所述硬判定结果值序列进行位纠错; 在比特纠错之后输出硬判决结果值序列作为解码结果。

9. 发明申请

US20120099608A1 Synchronization Method and Device 有权
标题翻译：同步方法和设备
公开(公告)号：US20120099608A1
公开(公告)日：2012-04-26
申请号：US13257920
申请日：2010-03-25
申请人： Yueyi You , Qiang Li , Ning Qiu , Nanshan Cao , Tao Zhang
发明人： Yueyi You , Qiang Li , Ning Qiu , Nanshan Cao , Tao Zhang
IPC分类号： H04J3/06
CPC分类号： H04L27/2656 , H04L27/2675
摘要： A synchronization method is disclosed, including: obtaining a synchronization symbol position {circumflex over (d)}0 of one time slot of an initial update period; taking Ntrack frames as an update period to adjust the synchronization symbol position, and the step of adjusting the synchronization symbol position including: obtaining a synchronization symbol position {circumflex over ({circumflex over (d)}k+1=dk+Ntrack{circumflex over (T)}k of a corresponding time slot of a (k+1)th update period according to a synchronization symbol position {circumflex over (d)}k of a corresponding time slot of a kth update period and an inter-frame sampling derivation estimation value {circumflex over (T)}k of said kth update period; obtaining synchronization symbol positions of other time slots in said kth update period according to the synchronization symbol position {circumflex over (d)}k of the corresponding time slot of the kth update period and the inter-frame sampling derivation estimation value {circumflex over (T)}k of said kth update period. A synchronization apparatus is also disclosed. The method and apparatus reduces synchronization calculation amount.
摘要翻译：公开了一种同步方法，其包括：获得初始更新周期的一个时隙的同步符号位置{（d）} 0; 将Ntrack帧作为更新周期来调整同步符号位置，以及调整同步符号位置的步骤包括：获得同步符号位置{circumflex over（{circumflex over（d）} k + 1 = dk + Ntrack {circumflex 根据第k个更新周期的对应时隙的同步符号位置{（d）} k的第（k + 1）个更新周期的相应时隙，超过（T）} k个k 根据所述第k个更新周期的采样导出估计值{（f）（k）），根据相应时隙的同步符号位置{（d）} k获得所述第k个更新周期中的其他时隙的同步符号位置以及所述第k个更新周期的帧间采样导出估计值（在（T）} k的转换，同时还公开了同步装置，该方法和装置减少了同步计算 nt。

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