Iterative Equalization and TCM Decoding with Refined Channel Value

Author

Xiao, Pei ; Carrasco, Rolando ; Wassell, Ian

Author_Institution

Univ. of Newcastle Upon Tyne, Newcastle upon Tyne

Volume

6

Issue

11

fYear

2007

fDate

11/1/2007 12:00:00 AM

Firstpage

3920

Lastpage

3925

Abstract

In this correspondence, we present a new method for the iterative equalization and decoding of multilevel trellis coded modulation (TCM) signals over frequency selective channels. Results show that the proposed algorithm achieves better performance compared to the previous work on the MMSE filter- based turbo equalization for a non-binary coded modulation scheme. The performance gain is accomplished by utilizing the combined modulation and coding nature of TCM and passing the refined signal obtained from different paths to the TCM decoder as the channel value in addition to the a priori probabilities.

Keywords

channel coding; decoding; equalisers; intersymbol interference; least mean squares methods; trellis coded modulation; turbo codes; MMSE filter; TCM decoding; frequency selective channel; intersymbol interference; iterative equalization; multilevel trellis coded modulation signal; nonbinary coded modulation scheme; refined channel value; turbo equalization; Degradation; Filtering; Frequency; Intersymbol interference; Iterative algorithms; Iterative decoding; Iterative methods; Modulation coding; System performance; Telecommunication computing;

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2007.060393

Filename

4381400