基于不变波束形成的WSN路由存活概率云计算  

Cloud Computing of WSN Routing Survival Probability Based on Invariant Beamforming

作　　者：曾薇[1] 张立人[1] 

机构地区：[1]四川理工学院计算机学院,四川自贡643000

出　　处：《科技通报》2014年第10期211-213,共3页Bulletin of Science and Technology

基　　金：企业信息化与物联网测控技术四川省高校重点实验室开放基金项目(2013WYY07)

摘　　要：无线传感器网络WSN的路由存活概率云计算模型的优化设计可以提高WSN网络的网络复杂和数据吞吐量,在WSN网络的路由发射功率能耗具有匹配衰减特性,路由存活概率优化困难。传统方法采用灰色马尔可夫链组合模型进行存活概率预测,云计算精度不高。提出一种基于不变波束形成的WSN路由存活概率云计算优化模型,进行WSN网络云计算路由链路模型的结构设计,在WSN网络中进行任务节点信息表征,采用能量剩余度向量概率密度优化分配算法进行能量分配,把WSN的能量节点信号从阵元域变换到波束域得到阵列域,采用空间协方差矩阵逆的高阶次幂来逼近WSN的数据传输信号模型,将旋转角度控制在半功率主瓣以内,由此得到了云计算模型下WSN路由节点数据传输模型。仿真实验表明,该算法能提高WSN路由的存活概率,从而提高了WSN的吞吐量和通信能力,路由概率寻优中抑制了在WSN网络的路由发射功率能耗的匹配衰减性,通过最小的能量开销实现路由分发速率和负载效益的最大化。The optimal design of wireless sensor network WSN routing survival probability cloud computing model can im-prove the WSN network is complex and the data throughput, routing in WSN networks transmit power consumption has matched attenuation characteristics, routing survival probability optimization problems, the traditional method using grey Markov chain model for survival probability prediction, cloud computing precision is not high. An optimization model for calculating WSN routing invariant beam forming is proposed based on the survival probability of cloud, the structure design of WSN network routing link model of cloud computing, task node representation of information in the WSN network is ob-tained, using the energy residual vector probability density distribution optimization algorithm for energy distribution, ener-gy node signal WSN domain from the matrix array element domain to the beam domain, high order power of the spatial cova-riance matrix inverse approach to the data transmission model of WSN signal, the rotation angle control within the main lobe half power, resulting in cloud computing WSN routing node data transmission model. Simulation results show that, the algorithm can improve the survival probability of WSN routing, improves the throughput and communication ability of WSN, the routing probability optimization suppressed the decay of matching power energy consumption routing in WSN net-works, the minimum energy routing overhead distribution rate and loading efficiency maximization is obtained.

关 键 词：波束形成 无线传感器网络 路由 

分 类 号：TP399[自动化与计算机技术—计算机应用技术]