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Performance Analysis of Adaptive Decode-and-Forward Cooperative Diversity Networks with the best relay selection Scheme

Lookup NU author(s): Dr Salama Ikki, Mariam Ahmed


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Cooperative diversity is a relatively new technique that can be used to improve the performance of the wireless networks. The main advantage of this technique is that the diversity gain can be achieved without the need to install multiple antennas at the transmitter or the receiver. In this paper, we investigate the performance of the best-relay selection scheme where the "best" relay only participates in the relaying. Therefore, two channels only are needed in this case (one for the direct link and the other one for the best indirect link) regardless of the number of relays (M). The best relay is selected as the relay node that can achieve the highest signal-to-noise ratio at the destination node. A general mathematical probability model is developed to study the outage performance of the best-relay selection adaptive decode-and-forward cooperative networks. In particular, closed-form expressions for the outage probability and average channel capacity are derived. Results show that the best-relay selection not only reduces the amount of required resources but also can maintain a full diversity order.

Publication metadata

Author(s): Ikki S, Ahmed M

Publication type: Article

Publication status: Published

Journal: IEEE Transactions on Communications

Year: 2010

Volume: 58

Issue: 1

Pages: 68-72

Print publication date: 22/01/2010

ISSN (print): 0090-6778

ISSN (electronic): 1558-0857

Publisher: IEEE


DOI: 10.1109/TCOMM.2010.01.080080


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