Reduced-delay interference-aware opportunistic relaying

Authors:
Aggelos Bletsas;Antonis G. Dimitriou;John N. Sahalos
Affiliations:
Radio-Communications Laboratory, Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece;Radio-Communications Laboratory, Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece;Radio-Communications Laboratory, Department of Physics, Aristotle University of Thessaloniki, Thessaloniki, Greece
Venue:
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
Year:
2009

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Abstract

In this work, we extend low-complexity, slow-fading opportunistic relaying in both noise and interference-limited setups in order to harvest cooperation benefits without sacrificing overall delay. In particular, we show that information can be reliably relayed without delay, at the presence of interference, while harvesting benefits of cooperative diversity due to the opportunistic protocol nature. Under interference-aware opportunistic relaying, relays become useful provided that they offer strong paths towards source and destination, while at the same time they are as "isolated" as possible from each other (e.g. when directive antennas are utilized). This work could potentially assist reduced-delay, cooperative relaying applications (e.g. wireless access) with low-complexity receivers.