北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2012, Vol. 35 ›› Issue (2): 19-23.doi: 10.13190/jbupt.201202.19.zhangxf

• 论文 • 上一篇    下一篇

分簇式WSN中基于MISO技术的协作传输系统性能分析

张雪芬1,尹长川2,乐光新2   

  1. 1山东财经大学 山东省数字媒体技术重点实验室, 济南 250014; 2 北京邮电大学 信息与通信工程学院, 北京 100876
  • 收稿日期:2011-05-20 修回日期:2011-07-30 出版日期:2012-04-28 发布日期:2012-01-05
  • 通讯作者: 张雪芬 E-mail:z_xf@sdu.edu.cn
  • 作者简介:张雪芬(1979-),女,博士,讲师,E-mail:z_xf@bupt.edu.cn
  • 基金资助:

    国家自然科学基金项目(60972073,60871042,60872049,60971082);国家高技术研究发展计划项目(2011AA100706);国家科技重大专项项目(2010ZX03001-003)

Performance Analysis for Cooperative Transmission in Clustered Wireless Sensor Networks Based on MISO Technologies

ZHANG Xue-fen1,YIN Chang-chuan2,YUE Guang-xin2   

  1. 1 Key Laboratory of Digital Media Technology(Shandong), Shandong University of Finance and Economics, Jinan 250014, China;2 School of Information and Communication Engineering, Beijing University of Posts and Telecommunications, Beijing 100876, China
  • Received:2011-05-20 Revised:2011-07-30 Online:2012-04-28 Published:2012-01-05
  • Contact: Xuefen Zhang E-mail:z_xf@sdu.edu.cn

摘要:

针对无线传感器网络(WSN)中多节点协作传输问题,研究了分簇式无线传感器网络中基于虚拟多输入单输出(MISO)技术的系统性能.首先推导了系统簇内广播阶段、簇间传输阶段的误符号率(SER)以及2个阶段系统整体误符号率的表达式;然后给出了系统整体误符号率一种有效的下界,并进行了仿真验证;最后将系统误符号率作为约束,建立了优化系统功率分配模型,并提出了求解该模型极值解的有效方法. 仿真结果表明,在满足系统一定误符号率要求下,优化模型有效地节约了系统能量.

关键词: 无线传感器网络, 协作通信; 虚拟多输入单输出, 误符号率

Abstract:

Using virtual multiple-input single output (MISO) technologies, the performance for cooperative transmission in clustered wireless sensor networks
(WSNs) is studied. The symbol-error-rate (SER) formulas are derived for the phases of intra-cluster broadcasting and inter-cluster cooperative transmission as well as for end-to-end, respectively. Moreover, an effective low bound on the end-to-end SER is proposed. Besides, an optimal power allocation model using the end-to-end SER as constraints is proposed. An efficient method for solving the optimal solution of the model is proposed. Simulation shows that the model has energy-saving advantages under different SER requirements.

Key words: wireless sensor network, cooperative transmission, virtual multiple input single output, symbol-error-rate

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