A CROSS-LAYER RELAY SELECTION SCHEME OF A WIRELESS NETWORK WITH MULTIPLE RELAYS UNDER RAYLEIGH FADING

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In this paper, we consider a decode-and-forward wireless relay network consisting of a source node, a destination node and multiple relay nodes under Rayleigh fading. Cooperative diversity of the network is achieved by using an opportunistic relay selection. To maximize the benefit of cooperative diversity, we propose a novel cross-layer single relay selection scheme, called the First-Channel-and-Second-Buffer (FCSB) scheme, that considers the performances of both the physical and data link layers. To examine the performance of the proposed FCSB scheme, we develop an analytical model that describes the queueing process of the source node, and derive the average packet delay of the FCSB scheme from our analytical model. Our analytical model is verified through simulation. We discuss how to optimally design the proposed FCSB scheme to minimize the average packet delay. We also show that the optimized FCSB scheme outperforms other relay selection schemes from the viewpoint of average packet delay.
Publisher
AMER INST MATHEMATICAL SCIENCES
Issue Date
2014-01
Language
English
Article Type
Article
Keywords

DIVERSITY

Citation

JOURNAL OF INDUSTRIAL AND MANAGEMENT OPTIMIZATION, v.10, no.1, pp.1 - 19

ISSN
1547-5816
DOI
10.3934/jimo.2014.10.1
URI
http://hdl.handle.net/10203/188458
Appears in Collection
MA-Journal Papers(저널논문)
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