Cooperative Multiplexing in a Half Duplex Relay Network: Performance and Constraints

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dc.creatorYijia
dc.creatorFan
dc.creatorPoor, H. Vincent
dc.creatorThompson, John S.
dc.date2007-09-24
dc.date2007-09-29
dc.date.accessioned2026-07-07T08:32:42Z
dc.date.available2026-07-07T08:32:42Z
dc.descriptionPrevious work on relay networks has concentrated primarily on the diversity benefits of such techniques. This paper explores the possibility of also obtaining multiplexing gain in a relay network, while retaining diversity gain. Specifically, consider a network in which a single source node is equipped with one antenna and a destination is equipped with two antennas. It is shown that, in certain scenarios, by adding a relay with two antennas and using a successive relaying protocol, the diversity multiplexing tradeoff performance of the network can be lower bounded by that of a 2 by 2 MIMO channel, when the decode-and-forward protocol is applied at the relay. A distributed D-BLAST architecture is developed, in which parallel channel coding is applied to achieve this tradeoff. A space-time coding strategy, which can bring a maximal multiplexing gain of more than one, is also derived for this scenario. As will be shown, while this space-time coding strategy exploits maximal diversity for a small multiplexing gain, the proposed successive relaying scheme offers a significant performance advantage for higher data rate transmission. In addition to the specific results shown here, these ideas open a new direction for exploiting the benefits of wireless relay networks.
dc.descriptionTo appear in the Proceedings of the 45th Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, September 26 - 28, 2007
dc.identifierhttps://arxiv.org/abs/0709.3600
dc.identifierhttp://arxiv.org/abs/0709.3600
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/138879
dc.subjectInformation Theory
dc.titleCooperative Multiplexing in a Half Duplex Relay Network: Performance and Constraints
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