Patent ID: 6826226
Filing Date: 2004-11-30
Classification: H04L

Abstract:
A method of determining filter coefficients in a communication system, comprising the steps of:estimating a channel over which signals have been transmitted; and determining the filter coefficients for a filter from the channel estimate using a spectral factorization algorithm and iteratively solving a system of linear equations, wherein solving the system of linear equations comprises the steps of: (a) determining spectrum coefficients of a spectrum of said channel estimate; (b) initializing current filter coefficients; (c) creating a complex conjugate matrix containing complex conjugates of the current filter coefficients; (d) multiplying the inverse of said complex conjugate matrix by a vector containing said spectrum coefficients to obtain next filter coefficients; (e) setting said current filter coefficients as equal to said next filter coefficients; (f) determining whether a loop criteria is met; (g) upon determining that the loop criteria is met, ending the solving step; and (h) upon determining that the loop criteria is not met, looping back to step (c).