Concatenated wavelet-based ring-TCM

Author

Moreira, J. Castiõeira ; Honary, B. ; Farrell, P.G.

Author_Institution

Electron. Eng. Dept., Mar del Plata Univ., Argentina

Volume

149

Issue

4

fYear

2002

fDate

8/1/2002 12:00:00 AM

Firstpage

189

Lastpage

194

Abstract

A new coded modulation technique for signal sets designed combining wavelet functions and M-quadrature amplitude modulation (MQAM) is presented. Trellis-coded modulation (TCM) is implemented using the ring of integers modulo-Q as the algebraic structure of the multilevel convolutional encoder. These schemes are suitable for adaptive time-frequency unequal error protection, multiple-access and multiplexing, as well as being effective replacements for existing schemes. Wavelet-based ring-TCM schemes and MQAM ring-TCM schemes are first presented, and then combined to constitute a concatenated ring-TCM scheme. The concatenated scheme shows a coding gain of around 8 dB over uncoded BPSK, and does not require iterative decoding

Keywords

concatenated codes; convolutional codes; error correction codes; quadrature amplitude modulation; time-frequency analysis; trellis coded modulation; wavelet transforms; M-QAM; M-quadrature amplitude modulation; W-ring-TCM; adaptive time-frequency unequal error protection; algebraic structure; coded modulation technique; coding gain; concatenated wavelet-based ring-TCM; integers modulo-Q; multilevel convolutional encoder; multiple-access; multiplexing; signal sets; trellis-coded modulation; wavelet functions;

fLanguage

English

Journal_Title

Communications, IEE Proceedings-

Publisher

iet

ISSN

1350-2425

Type

jour

DOI

10.1049/ip-com:20020414

Filename

1039529