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    • 2. 发明授权
    • Trellis construction based on parity check matrix for BCH code
    • 基于BCH码奇偶校验矩阵的网格构建
    • US07266749B1
    • 2007-09-04
    • US10186128
    • 2002-06-27
    • Yan ZhongLin Yang
    • Yan ZhongLin Yang
    • H04L1/14
    • H03M13/152H03M13/3944H04L1/0058
    • A method for constructing a simplified trellis diagram for BCH-encoded information is disclosed. BCH-encoded information is received, having a corresponding parity check matrix H. The parity check matrix H is expressed as an ordered sequence of columns of matrices. A sequence of sub-code words is provided, corresponding to one or more code words, each satisfying a given condition. A matrix Hcp, having columns that are generated as a selected permutation of the columns of the matrix H through a column-permutation-for-binary-matching process, is provided, and a sequence of sub-matrices and a corresponding sequence of permuted sub-code words is provided. A trellis diagram, representing an ordered sequence of code word transitions in the received information and symmetric about a central location, is provided for each code word c, connecting n+1 stages, numbered i=0, 1, . . . , n, in an ordered sequence.
    • 公开了一种用于构建BCH编码信息的简化网格图的方法。 BCH编码信息被接收,具有对应的奇偶校验矩阵H.奇偶校验矩阵H表示为矩阵列的有序序列。 提供一个子代码字序列,对应于一个或多个代码字,每个代码字都满足给定条件。 提供了具有通过列置换二进制匹配处理作为矩阵H的列的选择排列生成的列的矩阵H pc, 提供矩阵和相应的排列子码字序列。 对于每个代码字c,提供了连接n + 1个阶段(编号为i = 0,1)的格子图,表示接收到的信息中的码字转换的有序序列并且关于中心位置对称的格状图。 。 。 ,n,有序序列。
    • 3. 发明授权
    • Low complexity multiple bits matched filter
    • 低复杂度多位匹配滤波器
    • US06426982B1
    • 2002-07-30
    • US09398939
    • 1999-09-17
    • Lin YangYan ZhongKevin Hwang
    • Lin YangYan ZhongKevin Hwang
    • H03D100
    • G06F17/15H04B1/707H04B7/195H04B2201/70707H04L27/2278H04L2027/0065
    • Method and system for efficiently and quickly forming a sequence of convolution values from an over-sampled digital signal sequence. Convolution value differences are computable from a set of digital signal values that is smaller than the original set of signal values by a factor of R, the over-sampling rate. The number of adders and the associated time delay for computation of the convolution differences are reduced by at least a factor R and by at least a factor approximately proportional to log2(R), respectively, as compared to conventional computation of a convolution value. This approach is used to estimate a time value for which the convolution attains a largest magnitude or value.
    • 用于从过采样数字信号序列有效且快速地形成卷积值序列的方法和系统。 卷积值差异可以从一组数字信号值计算,该组数字信号值小于原始信号值集合乘以R的倍数,即过采样率。 与卷积值的常规计算相比,用于计算卷积差的加法器的数量和相关联的时间延迟分别减少至少一个因子R和至少一个与log 2(R)成比例的因子。 该方法用于估计卷积达到最大幅度或值的时间值。
    • 4. 发明授权
    • Decoding multi-block product code
    • 解码多块产品代码
    • US06898757B1
    • 2005-05-24
    • US10117388
    • 2002-04-04
    • Yan ZhongLin Yang
    • Yan ZhongLin Yang
    • H03M13/25H03M13/29H04L1/00H04L27/34H03M13/03
    • H04L1/0057H03M13/251H03M13/2909H04L1/0045H04L27/3488
    • A method for efficient decoding of block product code format signals, using a (22p)QAM signal constellation for mapping of a received signal, with p=2, 3, 4, 5, . . . A received signal value rx, corresponding to an x=I or x=Q coordinate, is converted to a p-tuple (B(p-1)x, . . . , B0x) corresponding to a “closest” I-coordinate or Q-coordinate numerical value, and a p-stage algorithm is applied to the signal values rx and to the p-tuples (B(p-1)x, . . . , B0x) to determine a p-tuple (r(p-1)x, . . . , r0x) representing a decoded p-bit value for the received signal value rx. Depending upon a communication channel parameter Eb/N0 and the bit error ratio BER associated with each of the p bits, the received signal values rx may be suitable for some or all communications activities (e.g., HDTV, SDTV, mobile comm).
    • 使用用于映射接收到的信号的(2≤Pp)QAM信号星座来对块产品码格式信号进行有效解码的方法,其中p = 2,3,4,5,...。 。 。 对应于x = I或x = Q坐标的接收信号值r x x x被转换成p元组(B(p-1)x)。 对应于“最接近”的I坐标或Q坐标数值的P阶算法,并且将p级算法应用于信号值r x1 / 以及p元组(B>(p-1)x,...,B×0x))来确定p元组(r∈(p-1) 1)表示用于接收信号值r x x的解码的p位值的x,...,r 。 根据通信信道参数Eb / N0和与每个p位相关联的比特误差BER,接收信号值r x x可适用于一些或所有通信活动(例如,HDTV, SDTV,手机通讯)。