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    • 11. 发明申请
    • Synchronization Method and Device
    • 同步方法和设备
    • US20120099608A1
    • 2012-04-26
    • US13257920
    • 2010-03-25
    • Yueyi YouQiang LiNing QiuNanshan CaoTao Zhang
    • Yueyi YouQiang LiNing QiuNanshan CaoTao Zhang
    • H04J3/06
    • H04L27/2656H04L27/2675
    • 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.
    • 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。
    • 12. 发明授权
    • Synchronization method and device
    • 同步方法和设备
    • US08743911B2
    • 2014-06-03
    • US13257920
    • 2010-03-25
    • Yueyi YouQiang LiNing QiuNanshan CaoTao Zhang
    • Yueyi YouQiang LiNing QiuNanshan CaoTao Zhang
    • H04J3/06
    • H04L27/2656H04L27/2675
    • 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.
    • 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。
    • 13. 发明申请
    • OFDM signal demodulation method and device thereof
    • OFDM信号解调方法及其装置
    • US20120114031A1
    • 2012-05-10
    • US13259038
    • 2010-04-23
    • Qiang LiNing QiuNanshan Cao
    • Qiang LiNing QiuNanshan Cao
    • H04L27/06H04L27/01
    • H04L25/03159H04L25/0216H04L25/022H04L27/2607H04L27/2657H04L27/2665H04L27/2672H04L27/2676H04L27/2695H04L2025/03414
    • 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.
    • 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。
    • 14. 发明授权
    • Method and device for decoding Reed-Solomon (RS) code
    • 用于解码里德 - 所罗门(RS)代码的方法和设备
    • US08677222B2
    • 2014-03-18
    • US13258449
    • 2010-05-04
    • Yueyi YouQiang LiNing QiuNanshan CaoTao Zhang
    • Yueyi YouQiang LiNing QiuNanshan CaoTao Zhang
    • H03M13/00
    • H03M13/1515H03M13/3715H03M13/451H03M13/458H03M13/616
    • 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.
    • 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。