The performance of BICM with a single decision feedback for the AWGN channel

Authors:
Sundeep Venkatraman;Oliver M. Collins
Affiliations:
Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN;Department of Electrical Engineering, University of Notre Dame, Notre Dame, IN
Venue:
IEEE Transactions on Information Theory
Year:
2009

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Abstract

This paper studies the performance of bit interleaved coded modulation (BICM) with a single decision feedback. The separation of demodulation and decoding in BICM inevitably reduces the channel's capacity. Altering the conventional bit mapping in BICM and allowing a single decision feedback greatly reduces the capacity loss. The extra complexity introduced by the single decision feedback appears well justified for dense constellations.