Error probability of BICM in fading channels: uniform interleaving analysis

Authors:
Alfonso Martinez;Albert Guillén i Fàbregas
Affiliations:
Centrum voor Wiskunde en Informatica, Amsterdam, The Netherlands;Engineering Department, University of Cambridge, Cambridge, UK
Venue:
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 2
Year:
2009

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Abstract

This paper studies the average error probability of bit-interleaved coded modulation with uniform interleaving in fully-interleaved fading channels. At large signal-to-noise ratio, the dominant pairwise error events are mapped into symbols with Hamming weight larger than one, causing a flattening of the error probability. Closed-form expressions for the error probability with general modulations are provided. For interleavers of practical length, the flattening is noticeable only at very low values of the error probability.