【摘要】 对基于协作分集技术的传感器网络传输性能问题进行了深入研究,建立了多信源、多信宿和多中继的传感器网络协作分集模型,推导出了在该模型下传感器网络的传输性能具体表达式,据此可以定量地计算在协作分集下多信源、多信宿和多中继的传感器网络的传输性能指标,为进一步讨论协作选择策略等技术方案在实际的无线传感器网络环境中的应用提供理论上的判断依据.另一方面,本文也从理论上证明了协作分集技术可以提高传感器网络的传输性能.最后利用仿真参数,给出了主要的几个仿真结果,其反应出来的协作通信下的无线传感器网络传输性能变化特点与本文的结论相吻合.更多还原

【Abstract】 This paper study the transmission capacity of wireless sensor networks based on the cooperative diversity technology.At first,the paper establish the cooperative diversity model for multi-source,multi-sink and multi-relay sensor networks,on which the specific transmission capacity expression of wireless sensor networks is deduced,it not only prove that the transmission capacity of wireless sensor networks will be increased by the cooperative diversity technology,but also give the criterion for discussing further the application effect of the technical scheme such as the cooperative selection strategy and so on in actual wireless sensor networks.In the other hand,the paper theoretically prove that cooperative diversity can improve the transmission capacity of wireless sensor networks.At last,some simulations are given and validity of the results is testified by the simulations.更多还原