Towards fully optimized BICM transceivers

M.J. Hossain, A. Alvarado, L.L. Szczecinski

Research output: Contribution to journalArticleAcademicpeer-review

11 Citations (Scopus)

Abstract

Bit-interleaved coded modulation (BICM) transceivers often use equally spaced constellations and a random interleaver. In this paper, we propose a new BICM design, which considers hierarchical (nonequally spaced) constellations, a bit-level multiplexer, and multiple interleavers. It is shown that this new scheme increases the degrees of freedom that can be exploited in order to improve its performance. Analytical bounds on the bit error rate (BER) of the system in terms of the constellation parameters and the multiplexing rules are developed for the additive white Gaussian Noise (AWGN) and Nakagami-m fading channels. These bounds are then used to design the BICM transceiver. Numerical results show that, compared to conventional BICM designs, and for a target BER of 10-6, gains up to 3 dB in the AWGN channel are obtained. For fading channels, the gains depend on the fading parameter, and reach 2 dB for a target BER of 10-7 and m = 5.
Original languageEnglish
Pages (from-to)3027-3039
JournalIEEE Transactions on Communications
Volume59
Issue number11
DOIs
Publication statusPublished - 1 Nov 2011
Externally publishedYes

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