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中文摘要：
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.
英文摘要：
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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A Relay Selection Scheme based on Geometric Optimum in Cooperative Cognitive Systems over Mixed fadi
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