Patent Number:
7,787,535
Title:
Method for calculating filter coefficients for an equaliser in a communication receiver using hermitian optimisation
Abstract:
A method for calculating filter coefficients for an equalizer in a communication receiver, the method including the steps of calculating (22) channel response matrices G and H from channel estimation inputs; performing (24) a Cholesky decomposition of the channel response matrix G into a lower triangular matrix L and an upper triangular matrix U; performing (26) forward substitution on the lower triangular matrix L to calculate a column vector d; performing (28) backward substitution on the column vector d and the Hermitian transpose L.sup.H of the lower triangular matrix L to calculate a middle column c.sub.0 of the inverse G.sup.-4 of the channel response matrix G; and calculating (30) the filter coefficients from the middle column c.sub.0 of the inverse channel response matrix G.sup.-1 and the Hermitian transpose H.sup.H of the response matrix H.
Inventors:
Bui; Thanh Ngoc (Victoria, AU)
Assignee:
NEC Corporation
International Classification:
H03K 5/159 (20060101)
Expiration Date:
8/31/12018