Pulse or digital communications – Equalizers – Automatic
Reexamination Certificate
2004-10-01
2008-12-02
Phu, Phuong (Department: 2611)
Pulse or digital communications
Equalizers
Automatic
C375S232000, C375S234000, C375S229000, C708S322000, C708S323000
Reexamination Certificate
active
07460594
ABSTRACT:
Computing optimal Linear Equalizer (LE) coefficients goptfrom a channel estimate h. A channel impulse response h is first estimated based upon either a known training sequence or an unknown sequence. The channel estimate is formulated as a convolution matrix H. The convolution matrix H is then related to the LE coefficients in a matrix format equation, the matrix format equation based upon the structure of the LE, the convolution matrix, and an expected output of the LE. A Fast Transversal Filter (FTF) algorithm is then used to formulate a recursive least squares solution to the matrix format equation. Computing the recursive least squares solution yields the LE coefficients using structured equations.
REFERENCES:
patent: 7027504 (2006-04-01), Yousef et al.
patent: 2004/0228399 (2004-11-01), Fimoff et al.
patent: 2005/0041760 (2005-02-01), Yousef
Broadcom Corporation
Garlick Bruce E.
Garlick & Harrison & Markison
Phu Phuong
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