Optimized Mappings for Iteratively Decoded BICM on Rayleigh Channels with Interleaving

Author

Clevorn, Thorsten ; Godtmann, Susanne ; Vary, Peter

Author_Institution

Inst. of Commun. Syst. & Data Process., RWTH Aachen Univ.

Volume

5

fYear

2006

fDate

7-10 May 2006

Firstpage

2083

Lastpage

2087

Abstract

A cost function for the optimization of mappings for bit-interleaved coded modulation systems with iterative decoding (BICM-ID) for a Rayleigh channel with applied IQ interleaving is derived. For this channel model the optimum mapping depends on the channel quality and on the rotation of the signal constellation set. Simulation results reveal that mappings optimized with the new cost function yield a better performance than previously known mappings. Furthermore, a second, easy procedure to obtain the optimum rotation angle for a signal constellation set in conjunction with IQ interleaving is described

Keywords

Rayleigh channels; channel coding; interleaved codes; iterative decoding; modulation coding; IQ interleaving; Rayleigh channels; bit-interleaved coded modulation systems; channel quality; iteratively decoded BICM; signal constellation set; AWGN; Approximation algorithms; Cost function; Demodulation; Fading; Feedback; Interleaved codes; Iterative decoding; Optimized production technology; Rayleigh channels;

fLanguage

English

Publisher

ieee

Conference_Titel

Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd

Conference_Location

Melbourne, Vic.

ISSN

1550-2252

Print_ISBN

0-7803-9391-0

Electronic_ISBN

1550-2252

Type

conf

DOI

10.1109/VETECS.2006.1683223

Filename

1683223