A simple scheme for delay-tolerant decode-and-forward based cooperative communication

Authors:
Manav R. Bhatnagar;Are Hjørungnes;Mérouane Debbah
Affiliations:
University Graduate Center, University of Oslo, Kjeller, Norway;University Graduate Center, University of Oslo, Kjeller, Norway;SUPÉLEC, Alcatel-Lucent Chair in Flexible Radio, Gif Sur Yvette, France
Venue:
ISIT'09 Proceedings of the 2009 IEEE international conference on Symposium on Information Theory - Volume 1
Year:
2009

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Abstract

In this paper, we study how to improve the performance of a decode-and-forward protocol based cooperative system over the delay constrained channels. We propose a simple transmission scheme, which makes the cooperative system tolerant of the delays caused by the poor synchronization of the relaying nodes. The proposed scheme is able to provide an improved coding gain in unsynchronized cooperative network as compared to the existing delay tolerant distributed space-time block codes.