Bandwidth efficient coded diversity for slow fading channels

Author

Gagnon, François ; Haccoun, David

Author_Institution

Dept. of Electr. Eng., Ecole de Technol. Superieure, Montreal, Que., Canada

fYear

1993

fDate

18-20 May 1993

Firstpage

116

Lastpage

119

Abstract

A coded frequency diversity scheme is presented for improving the error performance of coding and modulation on slow fading channels. Without additional bandwidth expansion, the signal is spread over different independent fading channels. Both trellis coded modulation (TCM) and usual convolutional codes may be used with this technique. For two very slow fading channels, where interleaving is impractical and coding usually does not provide any gain, coded diversity and 16 quadrature amplitude modulation (QAM) TCM provide gains of 13 dB at a BER of 10^-4

Keywords

Rayleigh channels; coding errors; convolutional codes; covariance matrices; diversity reception; fading; quadrature amplitude modulation; spread spectrum communication; trellis coded modulation; 13 dB; 16 quadrature amplitude modulation; QAM; TCM; coded frequency diversity scheme; convolutional codes; error performance; slow fading channels; trellis coded modulation; Bandwidth; Bit error rate; Convolutional codes; Error correction; Fading; Frequency diversity; Gain; Interleaved codes; Modulation coding; Spread spectrum communication;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 1993., 43rd IEEE

Conference_Location

Secaucus, NJ

ISSN

1090-3038

Print_ISBN

0-7803-1267-8

Type

conf

DOI

10.1109/VETEC.1993.507024

Filename

507024