Method for updating coefficients in decision feedback equalizer

Details Method for updating coefficients in decision feedback equalizer Method for updating coefficients in decision feedback equalizer

2007-10-30

2007-10-30

Ghebretinsae, Temesghen (Department: 2611)

Pulse or digital communications

Equalizers

Automatic

C375S348000

Reexamination Certificate

active

10665462

ABSTRACT:
A method for updating coefficients in a decision feedback equalizer (DFE). The DFE comprises an ISI canceler for canceling inter-symbol interference (ISI) from a plurality of first signals received from a channel. A first symbol comprising a set of the first signals is decoded to generate a decoded symbol. Then, a vector of error values computed as the difference between the decoded symbol, and the first symbol is obtained. According to the decoded symbol and the vector of the error values, a temp matrix is generated. Next, the values of the elements in every diagonal line of the temp matrix are averaged. Finally, the coefficients are updated by the Toeplitz Matrix.

REFERENCES:
patent: 6690715 (2004-02-01), Webster et al.
patent: 7113553 (2006-09-01), Chen et al.
patent: 2004/0101068 (2004-05-01), Wang et al.
patent: 2004/0146129 (2004-07-01), Lin
Inkyu, “A fast computation algorithm for the decision feedback equalizer”, IEEE Transactions on Communications, Nov. 1995 vol. 43, issue: 11, pp. 2742-2749.

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