发明名称 |
Blind adaptive equalization using cost function that measures dissimilarity between the probability distributions of source and equalized signals |
摘要 |
A technique for the blind equalization of digital communications channels relies on the iterative minimization of a cost function known as the J-divergence between a known or assumed probability density function (PDF) of the source data signal and an estimated PDF of a receiver decision output signal derived from the equalizer output signal by minimum-distance mapping. The J-divergence function is defined in terms of the Kullback-Leibler distance between the two PDFs. Minimization is achieved by continually updating both an equalizer tap coefficient vector and the estimated PDF of the decision output signal using a stochastic gradient algorithm applied to the J-divergence cost function.
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申请公布号 |
US6049574(A) |
申请公布日期 |
2000.04.11 |
申请号 |
US19980061880 |
申请日期 |
1998.04.17 |
申请人 |
TRUSTEES OF TUFTS COLLEGE |
发明人 |
NOONAN, JOSEPH PATRICK;GUVELIOGLU, ILYAS BERK;NATARAJAN, PREMKUMAR |
分类号 |
G06K9/62;H04L25/03;(IPC1-7):H03K5/01;H04B1/06 |
主分类号 |
G06K9/62 |
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