The Decode-and-Forward (DAF) relay strategy is the most popular cooperative diversity scheme due to its performance. Selection DAF (SDAF), relaying single or multiple relay selection, has recently been proven to achieve the same diversity order with lower power consumption than allparticipate (AP) networks. Most SDAF methods assume constant power for the best relay, regardless of channel conditions. In the SDAF method, the relay decodes the received signal and reencodes it to forward it to its destination. We propose a single relay selection strategy for two-hop relay networks. We specify a factor for each relay based on their outage probability criterion and the relay with the lowest probability of outage is selected for further cooperation for DAF scheme. In this paper, we suggest a method to select the best relay, where the destination node decides to cooperate with the relay nodes according to it is own the lowest outage probability for each link between destinationrelays nodes. In particular, we derive an expression for Cumulative Distribution Function (CDF) for the total SNR for SDAF. Our simulation results show that this method outperforms AP-DAF method, and can keep a full diversity order.
5th Mosharaka International Conference on Communications, Computers and Applications (MIC-CCA 2012)
Congress
2012 Global Congress on Communications, Computers and Applications (GC-CCA 2012), 12-14 October 2012, Istanbul, Turkey
Pages
--1
Topics
Wireless Communication Systems Cooperative and Opportunistic Technologies
ISSN
2227-331X
DOI
BibTeX
@inproceedings{496CCA2012,
title={Performance Analysis of Decode-and-Forward Cooperative Networks with Best Relay Selection},
author={Khaled Eshteiwi, and Reza Soleymani},
booktitle={2012 Global Congress on Communications, Computers and Applications (GC-CCA 2012)},
year={2012},
pages={--1},
doi={}},
organization={Mosharaka for Research and Studies}
}
