Two-level coding based on trellis-coded modulation and Reed-Solomon codes

Author

Wei, Lee-Fang

Author_Institution

AT&T Bell Labs., Holmdel, NJ, USA

Volume

42

Issue

12

fYear

1994

fDate

12/1/1994 12:00:00 AM

Firstpage

3098

Lastpage

3108

Abstract

A number of two-level codes based on trellis-coded modulation (TCM) schemes and their matched single or double error-correcting Reed-Solomon codes using QAM constellations are presented and evaluated. Compared to the well-known 4D 16-state TCM scheme with a comparable bandwidth efficiency, these two-level codes provide greater immunity from both Gaussian and impulse noise, at the cost of a reasonably higher complexity and a longer decoding delay, on the order of a few hundred symbols. The authors also show how to cope with phase ambiguities of the constellation in these two-level codes. Both rotationally invariant coding and rotation detecting techniques are considered

Keywords

Gaussian noise; Reed-Solomon codes; codecs; computational complexity; decoding; error correction codes; quadrature amplitude modulation; trellis coded modulation; Gaussian noise; QAM constellations; Reed-Solomon codes; bandwidth efficiency; complexity; decoding delay; error-correcting codes; impulse noise; phase ambiguities; rotation detecting techniques; rotationally invariant coding; trellis-coded modulation; two-level codes; Additive white noise; Bandwidth; Delay; Gaussian noise; Modems; Modulation coding; Quadrature amplitude modulation; Rails; Reed-Solomon codes; Video compression;

fLanguage

English

Journal_Title

Communications, IEEE Transactions on

Publisher

ieee

ISSN

0090-6778

Type

jour

DOI

10.1109/26.339830

Filename

339830