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JMT 2012, Vol. 20 Issue (4) :255-260     DOI: 10.3969/j.issn.2095-087X.2012.04.010
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Optimal power allocation for complex field network coding scheme with the K-th best relay selection
Xi CAI, Pingzhi FAN, Qingchun CHEN*
Institute of Mobile Communications, Southwest Jiaotong University, Chengdu 610031, China

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Abstract Wireless relay and network coding are two critical techniques to increase the reliability and throughput of wireless cooperative communication systems. In this paper, a complex field network coding (CFNC) scheme with the K-th best relay selection (KBS) is proposed and investigated, wherein the K-th best relay is selected to forward the multiplexed signal to the destination. First, the upper bound of the symbol error probability (SEP), the diversity order, and the coding gain are derived for the CFNC scheme with KBS. Then, the coding gain is utilized as the optimized criterion to determine the optimal power allocation. It is validated through analysis and simulation that the CFNC scheme with KBS can achieve full diversity only when K=1, while the diversity order decreases with increasing parameter K, and the optimal power allocation can significantly improve the performance of the CFNC scheme with KBS.
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Xi CAI
Pingzhi FAN
Qingchun CHEN
Keywordscomplex field network coding   the K-th best relay selection   power allocation     
Received 2012-10-21;
Fund:

This work was supported by the National Basic Research Program of China (973 Program No. 2012CB316100), and the National Natural Science Foundation of China (Nos. 61032002/61271246), and the 111 Project (No. 111-2-14).

Cite this article:   
Xi CAI, Pingzhi FAN, Qingchun CHEN.Optimal power allocation for complex field network coding scheme with the K-th best relay selection[J]  JMT, 2012,V20(4): 255-260
URL:  
http://jmt.swjtu.edu.cn/EN/10.3969/j.issn.2095-087X.2012.04.010      or     http://jmt.swjtu.edu.cn/EN/Y2012/V20/I4/255
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