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

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

2007-09-24

arxiv.org/abs/0709.3600v2

Computer Science

Information Theory

To appear in the Proceedings of the 45th Annual Allerton Conference on Communication, Control and Computing, Monticello, IL, S

Scientific paper

Previous 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.

Affiliated with

Also associated with

No associations

Rating

Cooperative Multiplexing in a Half Duplex Relay Network: Performance and Constraints does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Cooperative Multiplexing in a Half Duplex Relay Network: Performance and Constraints, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cooperative Multiplexing in a Half Duplex Relay Network: Performance and Constraints will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-276385