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基于功率最优化分配的选择性协作通信模式 被引量：7

Selective cooperative communication based on power optimal allocation
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摘要 对于资源受限的无线网络,协作通信技术被认为是一种能够有效提高传输功率效率的空间分集技术.为了解决协作通信会引入由于中继节点运行和中继处理带来的额外功率这一难题,提出了一种功率效率最优的选择性协作通信模式,既能满足通信链路的设计要求,又只在必要的时候引入协作机制.在误符号率受限和节点最大功率受限的条件下,给出了源节点和中继节点最优的功率分配,然后选择功率效率最大的传输模式.计算机仿真说明,提出的选择性协作通信模式比传统的协作通信模式具有更高的功率效率. Cooperative communication is considered as a power-efficient technology for resource-constraint wireless networks.However,its gains often come at a price in terms of extra power consumption for relay running and relaying processing.A new selective cooperative scheme was proposed to satisfy an overall performance requirement so that cooperation is only invoked when necessary.Optimal power allocations under overall symbol-error-rate（SER） constraint and maximum power limit were derived for cooperative schemes.Taking into account extra power,the scheme with minimum overall power was adopted for a source-destination pair.Simulation results show that the proposed schemes are more power-efficient than the conventional cooperative scheme.
作者 张超 廖晓光 王卫东 卫国
机构地区 中国科学技术大学电子工程与信息科学系无线网络通信安徽省重点实验室
出处 《中国科学技术大学学报》 CAS CSCD 北大核心 2010年第4期419-424,430,共7页 JUSTC
基金 国家重点基础研究发展(973)计划(2007CB310602) Intel大学研究计划(4507334166)资助
关键词 协作通信 功率效率 中继选择 cooperative communication power-efficiency relay selecting
分类号 TN929.5 [电子电信—通信与信息系统]
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参考文献11

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同被引文献44

  • 1HONG Y W,HUANG W J,CHIU F H,et al.Cooperativecommunications in resource constrained wireless networks[J].IEEE Signal Processing Magazine,2007,24(5):47-57.
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  • 4LI Y,Vucetic B,ZHOU Z,et al.Distributed adaptive powerallocation for wireless relay networks[J].IEEE Trans Wire-less Commun,2007,6(3):948-958.
  • 5Sendonaris A, Erkip E, Aazhang B. User Cooperation Diversity- part Ⅰ: System Description[J]. IEEE Trans. on Communica- tions, 2003, 51(11): 1927-1938.
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  • 7Sahinoglu Z, Orlik P. Optimum Power Compensation for Error Propagation in Relay-assisted Wireless Networks[C]//Proc. of Global Telecommunications Conference. San Francisco, USA: IEEE Press, 2003.
  • 8Wu Meng, Wübben D, Dekorsy A. BER-based Power Alloca- tion for Amplify-and-forward and Decode-and-forward Relaying Systems[C]//Proc. of International ITG Workshop on Smart Antennas. Aachen, Germany: IEEE Press, 2011.
  • 9Sheng Zhengguo, Jun Koy B, Swamiz A, et al. Analysis and Algorithms for Power Allocation in Decode-and-forward Cooperative Relaying[C]//Proc. of Annual Conference of International Technology Alliance in Network and Information Sciences. [S. l.]: IEEE Press, 2010.
  • 10Phan K T, Ngoc T L, Vorobyov S A, et al. Power Allocation in Wireless Multi-user Relay Networks[J]. IEEE Trans. on Wireless Communications, 2009, 8(5): 2535-2545.

引证文献7

二级引证文献14

中国科学技术大学学报
2010年 第4期

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