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1. 发明授权

US07609759B2 Method and system of nonlinear signal processing 失效
标题翻译：非线性信号处理方法与系统
公开(公告)号：US07609759B2
公开(公告)日：2009-10-27
申请号：US11280970
申请日：2005-11-16
申请人： Gil M. Raz , Cy P. Chan
发明人： Gil M. Raz , Cy P. Chan
IPC分类号： H03H7/30 , H03H7/40 , H03K5/159
CPC分类号： H03F1/3229 , H03F2200/372 , H03H17/0261 , H03H17/0294 , H03H21/0016
摘要： A nonlinear equalizer for treating the nonlinear component of a distorted digital signal includes a first processing unit adapted to receive the distorted digital signal and yield an appropriate output signal in response thereto, a second processing unit adapted to receive the distorted digital signal and yield an appropriate output signal in response thereto, and a summation module for summing together the output signals from the first and second processing units so as to yield an equalized digital signal. In one embodiment, each of the first and second processing units comprises a linear filter, a partitioning filterbank for partitioning the distorted digital signal, and a multiplier for multiplying together the output of said linear filter with the output of said partitioning filterbank. In use, the nonlinear equalizer can be used to adaptively partition the distorted digital signal so as to allow for nonlinear equalization in a highly efficient manner. Prior to its use in this manner, the coefficient of each linear filter is optimized through the injection of multiple sets of test tones into the nonlinear system.
摘要翻译：用于处理失真数字信号的非线性分量的非线性均衡器包括：第一处理单元，适于接收失真的数字信号并响应于此产生适当的输出信号;第二处理单元，适于接收失真的数字信号并产生适当的输出信号和用于将来自第一和第二处理单元的输出信号相加的求和模块，以产生均衡的数字信号。在一个实施例中，第一和第二处理单元中的每一个包括线性滤波器，用于分割失真数字信号的分频滤波器组，以及用于将所述线性滤波器的输出与所述分区滤波器组的输出相乘的乘法器。在使用中，非线性均衡器可用于自适应地分割失真的数字信号，以便以高效的方式实现非线性均衡。在以这种方式使用之前，通过将多组测试音调入非线性系统来优化每个线性滤波器的系数。

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