基于多节点协作的认知WSN能耗优化算法  

Optimal Algorithm of Energy Consumption in Cognitive WSN Based on Multi-node Cooperation

作　　者：许晓荣[1] 章坚武[1] 黄爱苹[2] 

机构地区：[1]杭州电子科技大学通信工程学院,浙江杭州310018 [2]浙江大学信息与通信工程研究所,浙江杭州310027

出　　处：《杭州电子科技大学学报（自然科学版）》2011年第4期57-60,共4页Journal of Hangzhou Dianzi University：Natural Sciences

基　　金：浙江省教育厅科研资助项目(Y201119890);杭州电子科技大学科研启动基金资助项目(KYS085610034)

摘　　要：针对节点能量受限的认知无线传感器网络,该文研究了多节点认知无线传感器网络中基于节点机会协作的能耗问题。该文首先推导了节点传输能耗解析式与采用二进制相移键控调制时汇聚节点误码率闭式解,并基于能耗最小化原则对协作节点集进行优化,从而得到在传输距离一定时,基于能耗最小化与最佳协作节点集合的认知无线传感器网络节点误码性能。仿真结果表明,提出的算法可以有效降低认知无线传感器网络节点的传输能耗。This paper investigates energy consumption problem in opportunistic cooperation based enaerg）-con- strained cognitive wireless sensor networks（C-WSN）. An analytical expression of transmission energy con- sumption and an exact elosed-form expression of average bit errorrate iBER） with BPSK modulation are de- rived. Based on the minimization of energy consumption, optimization algorithm is presented in order to obtain the whole average BER performance with the minimum energy consumption and optimal cooperative node set under a certain transmission distance.constraint. Simulation results show that the proposed algorithm provides a significant energy saving performance for C-WSN.

关 键 词：认知无线传感器网络 机会协作 传输能耗 协作节点集 误码性能 

分 类 号：TN929.5[电子电信—通信与信息系统]