Performance Analysis of a Threshold-Based Relay Selection Algorithm in Wireless Networks
Hao Niu, Taiyi Zhang, Li Sun
DOI: 10.4236/cn.2010.22014   PDF   HTML     5,517 Downloads   9,524 Views   Citations


Relay selection is an effective method to realize the cooperative diversity gain in wireless networks. In this paper, we study a threshold-based single relay selection algorithm. A reasonable threshold value is set at each relay node, and the first relay with the instantaneous channel gain larger than the threshold will be se-lected to cooperate with the source. The exact and closed form expression for its outage probability is de-rived over independent, non-identically distributed (i. n. i. d) Rayleigh channels. The complexity of the algo-rithm is also analyzed in detail. Simulation results are presented to verify our theoretical analysis.

Share and Cite:

H. Niu, T. Zhang and L. Sun, "Performance Analysis of a Threshold-Based Relay Selection Algorithm in Wireless Networks," Communications and Network, Vol. 2 No. 2, 2010, pp. 87-92. doi: 10.4236/cn.2010.22014.

Conflicts of Interest

The authors declare no conflicts of interest.


[1] J. N. Laneman, D. N. C. Tse and G. W. Wornell, “Cooperative Diversity in Wireless Networks: Efficient Protocols and Outage Behavior,” IEEE Transactions on Information Theory, Vol. 50, No. 12, December 2004, pp. 3062-3080.
[2] K. J. R. Liu, A. K. Sadek, W. Su and A. Kwasinski, “Cooperative Communications and Networking,” Cam- bridge University Press, Cambridge, 2008.
[3] S. Chen, W. Wang and X. Zhang, “Performance Analysis of Multiuser Diversity in Cooperative Multi- relay Networks under Rayleigh-Fading Channels,” IEEE Transactions on Wireless Communications, Vol. 8, No. 7, July 2009, pp. 3415-3419. Figure 4. The outage probabilities of opportunistic relaying and threshold-based algorithm with direct link.
[4] J. N. Laneman and G. W. Wornell, “Distributed Space- Time Coded Protocols for Exploiting Cooperative Diversity in Wireless Networks,” IEEE Transactions on Information Theory, Vol. 49, No. 10, October 2003, pp. 2415-2525.
[5] A. Bletsas, A. Khisti, D. P. Reed and A. Lippman, “A Simple Cooperative Diversity Method Based on Network Path Selection,” IEEE Journal on Selected Areas in Communications, Vol. 24, No. 3, March 2006, pp. 659-672.
[6] A. Bletsas, H. Shin and Moe Z. Win, “Cooperative Communications with Outage-Optimal Opportunistic Relaying,” IEEE Transactions on Wireless Communi- cations, Vol. 6, No. 9, September 2007, pp. 3450-3460.
[7] Kyu-Sung Hwang and Young-Chai Ko, “An Efficient Relay Selection Algorithm for Cooperative Networks,” 2007 IEEE 66th Vehicular Technology Conference, Baltimore, 30 September-3 October 2007, pp. 81-85.
[8] A. Bletsas, “Intelligent Antenna Sharing in Cooperative Diversity Wireless Networks,” Ph.D. Dissertation, Massa- chusetts Institute of Technology, Cambridge, 2005.
[9] F. Xu, C. M. Lau, Q. F. Zhou and D. W. Yue, “Outage Performance of Cooperative Communication Systems Using Opportunistic Relaying and Selection Combining Receiver,” IEEE Signal Processing Letters, Vol. 16, No. 4, February 2009, pp. 237-240.

Copyright © 2022 by authors and Scientific Research Publishing Inc.

Creative Commons License

This work and the related PDF file are licensed under a Creative Commons Attribution 4.0 International License.