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无线协作网络中存在干扰时的中继选择协议 被引量：2

Relay Selection Protocol for Cooperative Wireless Networks with Interference
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摘要 针对无线协作网络中共道干扰影响中继选择的问题，提出一种存在干扰的中继选择协议（RSI）．该协议以最小化系统中断概率为目标，选择具有最大瞬时端到端信干比的中继节点转发源节点信息，并且在考虑直接传输时，目的节点采用选择合并策略合并直接传输和中继传输，从而充分利用空间分集增益，降低了系统的中断概率．RSI协议不需要中继节点之间交互信息，通过竞争的方式完成数据传输，节省了系统开销，具有较好的实用性．仿真结果表明，在瑞利信道中，当中继节点个数为4、中断概率为10^-2时，与最大最小中继选择协议相比，RSI协议能够取得约3～4dB的信噪比增益． A relay selection protocol with interference （RSI） is proposed to solve the problem that co-channel interferences affect the relay selection in cooperative wireless networks. The protocol minimizes the system outage probability, and selects the relay with maximum instantaneous end- to-end signal to interference and noise ratio to forward the source message. Moreover, the selection combining scheme is deployed at the destination to combine the direct transmission and relay transmission when the direct transmission is taken into account. This strategy can make full use of space diversity and decrease the system outage probability. Compared with the existing relay selection protocols, the proposed protocol does not need any information exchange between any two relays, and the data transmission is completed by competition. Thus, the proposed protocol has a low system cost and good practicability. Simulation results and comparisons with the maxmin relay selection protocol show that when the number of relays is 4 and the outage probability is 10^-2, the proposed protocol achieves about 3-4 dB signal to noise ratio gain in Rayleigh fading channels.
作者 司江勃 李赞 刘增基
机构地区 西安电子科技大学综合业务网国家重点实验室
出处 《西安交通大学学报》 EI CAS CSCD 北大核心 2010年第2期72-76,共5页 Journal of Xi'an Jiaotong University
基金 国家自然科学基金资助项目(60672129) 国家高技术研究发展计划资助项目(2009AA01Z237).
关键词 无线协作网络 干扰 中断概率 中继选择 cooperative wireless network interference outage probability relay selection
分类号 TN925 [电子电信—通信与信息系统]
  • 相关文献

参考文献8

  • 1LANEMAN J N,TSE D N C,WORNELL G W. Cooperative diversity in wireless networks efficient protocols and outage behavior[J]. IEEE Transactions on Information Theory, 2004, 50(12) : 3062-3080.
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二级参考文献14

  • 1LANEMAN J N,TSE D N C,WORNELL GW. Cooperative diversity in wireless networks: efficient protocols and outage behavior[J]. IEEE Transactions on Information Theory, 2004, 50(12): 3062-3080.
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  • 9LANEMAN J N, TSE D N C,WORNELL G W. Cooperative diversity in wireless networks: Efficient protocols and outage behavior[J]. IEEE Transactions on Information Theory, 2004,50(12) : 3062-3080.
  • 10ANNAVAJJALA R, COSMAN P C, MILSTEIN L B. Statistical channel knowledge-based optimum power allocation for relaying protocols in the high SNR regime [J]. IEEE Journal on Selected Areas in Communications, 2007, 25(2): 292-305.

共引文献13

同被引文献27

  • 1彭木根,王文博.协同无线通信原理与应用[M].北京:机械工业出版,2008.
  • 2Sendonaris A, Erkip E, Aazhang B. User Cooperation diversity- Part I :System description[J]. IEEE Transactions on Communication, 2003,51(10) : 1927-1938.
  • 3Sendonaris A, Erkip E, Aazhang B. User Cooperation diversity- Part II :Implementation aspects and performance analysis[J]. IEEE Transactions on Communication, 2003,51 (11): 1939-1948.
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  • 8Ban T W,Jung B C, Sung D K, et al. Performance analysis of two relay selection schemes for cooperative Diversity[C]// Proceeding of IEEE 18th International Symposium on Personal Indoor and Mobile Radio Communieations(PIMRC' 07), Sep 3-7, 2007, Athens. Greece Piscataway, NJ, USA: IEEE, 2007 :5.
  • 9Jing Y,Jafarkhani H. Single and Multiple Relay Selection Schemes and Their Achievable Diversity Orders[J]. IEEE Transactions on Wireless Communication, 2009,8(3) : 1414-1423.
  • 10Yi Zhi-hang, Kim I-M. Diversity Order Analysis of the Decode- and-Forward Cooperative Networks with Relay Selection[J]. IEEE Transactions on Communication,2008,5(7) : 1792-1799.

引证文献2

二级引证文献6

西安交通大学学报
2010年 第2期

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