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

Authors:
Li Wang;Lajos Hanzo
Affiliations:
School of ECS, University of Southampton, Southampton, UK;School of ECS, University of Southampton, Southampton, UK
Venue:
IEEE Communications Letters
Year:
2010

Citing 2
Cited 0

Cooperative diversity in wireless networks: Efficient protocols and outage behavior

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Capacity bounds and power allocation for wireless relay channels

IEEE Transactions on Information Theory

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Abstract

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 introdution of cooperation improves the achievable throughput.