Low complexity power allocation for hybrid amplify-and-forward opportunistic relay ordering cooperation

被引：2
作者：
CHENG Yu-lun [1 ]
YANG Long-xiang [1 ]
机构：
[1] Jiangsu Key Laboratory of Wireless Communications, Key Laboratory on Wideband Wireless Communications and Sensor Network Technology of Ministry of Education, Nanjing University of Posts and Telecommunications
来源：
TheJournalofChinaUniversitiesofPostsandTelecommunications | 2013年 / 20卷 / 03期
关键词：
opportunistic cooperation; multi-hop; RO; AF; power allocation;
D O I：
暂无
中图分类号：
TN911.4 [噪声与干扰];
学科分类号：
081002 ;
摘要：
In this paper, to enhance the robustness against link imbalance, a hybrid cooperative protocol is proposed for amplify-and-forward (AF) opportunistic cooperation, where opportunistic relaying and multi-hop cooperation with relay ordering (RO) are dynamically selected to maximize the end to end signal-noise ratio (SNR), and the power allocation coefficient is optimized under total power constraint accordingly. Furthermore, a suboptimum allocation scheme with low complexity is proposed by employing the upper bound of harmonic mean. Simulation results show that the proposed scheme outperforms conventional AF opportunistic cooperation in variety of line type topology. Moreover, the efficiency of the proposed suboptimum allocation is also validated in large SNR region.
引用
收藏
页码：26 / 31
页数：6
相关论文
共 13 条
  • [1] Relay selection for two-way relay channels with MABC DF:a diversity perspective. Krikidis I. IEEE Transactions on Vehicular Technology . 2010
  • [2] Employing relay ordering in incremental amplify and forward relaying technique to improve outage probability. Ghasemi H,Falahati A. Proceedings of the19th Telecommunications forum （TELFOR’’11） . 2011
  • [3] Multinode cooperative communications in wireless networks. Sadek A K,Su W,Liu K J. IEEE Transactions on Signal Processing . 2007
  • [4] Selection cooperation in multi source cooperative networks. Bere E,Adve R. IEEE Transactions on Wireless Communications . 2008
  • [5] Joint relay selection and relay ordering fordf-based cooperative relay networks. JU M,KIM I,KIM D. IEEE Transactions on Communications . 2012
  • [6] Outage probability of multi-hop amplify and forward relay systems. Conne C,Kim I M. IEEE Transactions on Wireless Communications . 2010
  • [7] A simple cooperative diversity method based on network path selection. Bletsas A,Khisti A,Reed D P,and LippmanA. IEEE Journal on Selected Areas in Communications . 2006
  • [8] Symbol error probabilities for general cooperative links. Ribeiro A,Cai X,Giannakis G B. IEEE Transactions on Wireless Communications . 2005
  • [9] Cooperative diversity in wireless networks: Efficient protocols and outage behavior. Laneman JN, Tse DNC, Wornell GW. IEEE Transactions on Information Theory . 2004
  • [10] Relay ordering in a multi-hop cooperative diversity network. Z Yi,M Ju,H-K Song,I-M Kim. IEEE Transactions on Communications . 2009
12