METHOD FOR CALCULATING FILTER COEFFICIENTS FOR AN EQUALISER IN A COMMUNICATION RECEIVER USING HERMITIAN OPTIMISATION

摘要

A method for calculating filter coefficients for an equaliser 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</SUP> of the lower triangular matrix L to calculate a middle column c0 of the inverse G<SUP>-1</SUP> of the channel response matrix G; and calculating (30) the filter coefficients from the middle column c<SUB>0</SUB> of the inverse channel response matrix G<SUP>-1</SUP> and the Hermitian transpose H<SUP>H</SUP> of the channel response matrix H.