公开(公告)号：EP1096746A3

公开(公告)日：2006-01-18

申请号：EP00123420.2

申请日：2000-11-02

申请人： TEXAS INSTRUMENTS INCORPORATED

发明人： Mahant-Shetti, Shivaling S. ,  Srinath, Hosur ,  Gatherer, Alan

IPC分类号： H04L25/03

CPC分类号： G06F7/552 ,  G06F2207/5525 ,  H04L25/0307 ,  H04L2025/03401 ,  H04L2025/03477 ,  H04L2025/0349 ,  H04L2025/03573 ,  H04L2025/0363

摘要： A cable modem (20) having a blind equalizer (40) in its equalization function (28) is disclosed. The blind equalizer (40) includes an adaptive equalizer (44) and an approximating update function (42) that provides updated equalization coefficients to the adaptive equalizer (44) using the Constant Modulus Algorithm, wherein the error in the adaptive equalizer output is estimated. The estimates are based upon a determination of the maximum and minimum of the real and imaginary components of symbols output by the adaptive equalizer (44). Efficiency in the computations required for updating the equalizer coefficients is obtained, without sacrificing convergence.

公开(公告)号：EP1096746A2

公开(公告)日：2001-05-02

申请号：EP00123420.2

申请日：2000-11-02

申请人： Texas Instruments Incorporated

发明人： Mahant-Shetti, Shivaling S. ,  Srinath, Hosur ,  Gatherer, Alan

IPC分类号： H04L25/03

CPC分类号： G06F7/552 ,  G06F2207/5525 ,  H04L25/0307 ,  H04L2025/03401 ,  H04L2025/03477 ,  H04L2025/0349 ,  H04L2025/03573 ,  H04L2025/0363

摘要： A cable modem (20) having a blind equalizer (40) in its equalization function (28) is disclosed. The blind equalizer (40) includes an adaptive equalizer (44) and an approximating update function (42) that provides updated equalization coefficients to the adaptive equalizer (44) using the Constant Modulus Algorithm, wherein the error in the adaptive equalizer output is estimated. The estimates are based upon a determination of the maximum and minimum of the real and imaginary components of symbols output by the adaptive equalizer (44). Efficiency in the computations required for updating the equalizer coefficients is obtained, without sacrificing convergence.

摘要翻译： 公开了一种在其均衡功能（28）中具有盲均衡器（40）的电缆调制解调器（20）。 盲均衡器（40）包括使用恒模算法向自适应均衡器（44）提供更新的均衡系数的自适应均衡器（44）和近似更新功能（42），其中估计自适应均衡器输出中的误差。 估计基于由自适应均衡器（44）输出的符号的实部和虚部分量的最大值和最小值的确定。 获得更新均衡器系数所需的计算的效率，而不会牺牲收敛。