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Non-Uniform 2-Slot Constellations for Bidirectional Relaying in Fading Channels

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2 Author(s)
Tomas Uricar ; Czech Technical University in Prague, Faculty of Electrical Engineering, Department of Radioengineering ; Jan Sykora

In this paper we introduce the constellation alphabets suitable for bidirectional relaying in parametric wireless channels. Based on the analysis of hierarchical minimum distance, we present a simple design algorithm for the non-uniform 2-slot constellation alphabets. These novel constellation alphabets outperform traditional linear modulation schemes in Hierarchical-Decode-and-Forward and Denoise-and-Forward relaying strategies in fading channels without sacrificing the overall system throughput.

Published in:

IEEE Communications Letters  (Volume:15 ,  Issue: 8 )