Multi-Dimensional Mappings of M-ary Constellations for BICM-ID Systems

Nghi H. TRAN  Ha H. NGUYEN  

IEICE TRANSACTIONS on Fundamentals of Electronics, Communications and Computer Sciences   Vol.E89-A   No.7   pp.2088-2091
Publication Date: 2006/07/01
Online ISSN: 1745-1337
DOI: 10.1093/ietfec/e89-a.7.2088
Print ISSN: 0916-8508
Type of Manuscript: LETTER
Category: Coding Theory
bit-interleaved coded modulation,  iterative decoding,  signal constellation,  multi-dimensional mapping,  

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This paper studies bit-interleaved coded modulation with iterative decoding (BICM-ID) systems that employ multi-dimensional mappings of M-ary constellations to improve the error performance over Rayleigh fading channels. Based on the analytical evaluations of the asymptotic bit error probability (BEP), the distance criteria for the mapping designs can be obtained. A binary switching algorithm (BSA) is then applied to find the optimal mappings with respect to the asymptotic performance. Simulation and analytical results show that the use of multi-dimensional mappings of M-ary constellations can significantly improve the error performance.