Achievable diversity-multiplexing-delay tradeoff in half-duplex ARQ relay channels

Tabet, Tarik;Dusad, Sanket;Knopp, Raymond

ISIT 2005, IEEE International Symposium on Information Theory, September 4-9, 2005, Adelaide, Australia

In this paper, we present an efficient protocol for the delay-limited fading Automatic Retransmission reQuest single relay channel. The source is using an ARQ retransmission protocol to send data to the relay and the destination. When the relay is able to decode, both the relay and the source send the same data to the destination providing additional gains. The proposed protocol exploits two kinds of diversity: (i) space diversity available through the cooperative (relay) terminal, which retransmits the source's signals, (ii) ARQ diversity obtained by leveraging the retransmission delay to enhance the reliability. The performance characterization is in terms of the achievable diversity, multiplexing gain and delay tradeoff for a high signalto- noise ratio (snr) regime

Detail

Document

DOI

BIBTEX

Type:

Conference

City:

Adelaide

Date:

2005-09-04

Department:

Communication systems

Eurecom Ref:

1896

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