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Optimum time resource allocation for TDMA-based differential decode-and-forward cooperative systems: a capacity perspective

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2 Author(s)
Li Wang ; University of Southampton, Southampton, SO17 1BJ, UK ; Lajos Hanzo

It is widely recognized that differential decode-and-forward (DDF) cooperative transmission schemes are capable of achieving a cooperative diversity gain, while circumventing the potentially excessive-complexity and yet inaccurate channel estimation, especially in mobile environments. In this letter, we find the optimum transmit-interval duration for the source and relay in the context of TDMA-based DDF-aided half-duplex systems for the sake of maximizing the achievable network throughput. We also demonstrate from a pure capacity perspective, in what scenarios the introduction of cooperation improves the achievable throughput.

Published in:

IEEE Communications Letters  (Volume:14 ,  Issue: 6 )