Patent Number: 6,307,901

Title: Turbo decoder with decision feedback equalization

Abstract: A decoder equalizes a turbo coded signal with intersymbol interference by performing a decision-feedback equalization in each iteration of the turbo decoding process. In such iteration process, two recursion processors calculate soft output values for the information bits and the coded bits of the signal as well. Hard output values are derived from the soft output values. A decision feedback equalizer in an iterative loop of the decoder receives the hard output values uses these to provide a correction for the intersymbol interference. Thereafter, the decision feedback signal applies the correction signal to the input signal to minimize the intersymbol interference.

Inventors: Yu; Xiaoyong (Grayslake, IL), Tan; Ming (Gurnee, IL), Zhu; Mang (Vernon Hills, IL)

Assignee: Motorola, Inc.

International Classification: H03M 13/00 (20060101); H04L 1/00 (20060101); H03M 13/29 (20060101); H04L 25/03 (20060101); H03M 013/23 ()

Expiration Date: 10/23/2018