| 分簇式WSN中基于MISO技术的协作传输系统性能分析 |
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| 引用本文： | 张雪芬,尹长川,乐光新. 分簇式WSN中基于MISO技术的协作传输系统性能分析[J]. 北京邮电大学学报, 2012, 35(2): 19-23 |
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| 作者姓名： | 张雪芬 尹长川 乐光新 |
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| 作者单位： | 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 |
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| 基金项目： | 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) |
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| 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.
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| 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 |
| 收稿时间： | 2011-05-20 |
Performance Analysis for Cooperative Transmission in Clustered Wireless Sensor Networks Based on MISO Technologies |
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| ZHANG Xue-fen , YIN Chang-chuan , YUE Guang-xin. Performance Analysis for Cooperative Transmission in Clustered Wireless Sensor Networks Based on MISO Technologies[J]. Journal of Beijing University of Posts and Telecommunications, 2012, 35(2): 19-23 |
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| Authors: | ZHANG Xue-fen YIN Chang-chuan YUE Guang-xin |
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| Affiliation: | 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 |
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| 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. |
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| Keywords: | wireless sensor network cooperative transmission virtual multiple-input single output symbol-error-rate |
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