Patent ID: 9503292
Filing Date: 2016-11-22
CPC Classification: H04L

Claim Text:
1. A method for calculating a feed-forward equalizer (FFE) coefficient of an FFE in a minimum mean square error decision feedback equalizer (MMSE-DFE) based on a fast transversal recursive squares (FT-RLS) algorithm, the FFE having a length L F , L F being a positive integer, the method comprising: a) generating a channel impulse response (CIR) estimation vector h according to an input signal of the FFE; b) generating a priori forward prediction error φ according to the CIR estimation vector h and a forward prediction coefficient vector w; c) providing a minimum cost of forward prediction α; d) generating a normalized gain vector c according to the forward prediction coefficient vector w, the minimum cost of forward prediction α and the priori forward prediction error φ, wherein the normalized gain vector c includes elements c[0] to c[L e) providing a posteriori forward prediction error ψ f) updating the forward prediction coefficient vector w according to the posteriori forward prediction error ψ and the normalized gain vector c; g) providing a conversion factor γ; h) generating the FFE coefficient according to the conversion factor γ and the normalized gain vector c; and updating the FFE with said FFE coefficient; wherein, step (a) to step (g) are collectively a 1