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arXiv · 1406.7315

Diversity versus Multiplexing at Finite Blocklength

Johan Östman·Wei Yang·Giuseppe Durisi·Tobias Koch
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Abstract

A finite blocklenth analysis of the diversity-multiplexing tradeoff is presented, based on nonasymptotic bounds on the maximum channel coding rate of multiple-antenna block-memoryless Rayleigh-fading channels.The bounds in this paper allow one to numerically assess for which packet size, number of antennas, and degree of channel selectivity, diversity-exploiting schemes are close to optimal, and when instead the available spatial degrees of freedom should be used to provide spatial multiplexing. This finite blocklength view on the diversity-multiplexing tradeoff provides insights on the design of delay-sensitive ultra-reliable communication links.

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Johan Östman, Wei Yang, Giuseppe Durisi, Tobias Koch. 2014-06-27. Diversity versus Multiplexing at Finite Blocklength. https://doi.org/10.1109/iswcs.2014.6933444

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