Pulse or digital communications – Receivers – Interference or noise reduction
Patent
1998-04-17
2000-04-11
Tse, Young T.
Pulse or digital communications
Receivers
Interference or noise reduction
375231, 375348, H03K 501, H04B 106
Patent
active
06049574&
ABSTRACT:
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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Guvelioglu Ilyas Berk
Natarajan Premkumar
Noonan Joseph Patrick
Trustees of Tufts College
Tse Young T.
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