【作者】 许晓荣； 章坚武； 黄爱苹；

【Author】 XU Xiao-rong~1,ZHANG Jian-wu~1,HUANG Ai-ping~2 (1.School of Communication Engineering,Hangzhou Dianzi University,Hangzhou Zhejiang 310018,China; 2.Institute of Information and Communication Engineering,Zhejiang University,Hangzhou Zhejiang 310027,China)

【机构】 杭州电子科技大学通信工程学院； 浙江大学信息与通信工程研究所；

【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。更多还原

【Abstract】 This paper investigates energy consumption problem in opportunistic cooperation based energy-constrained cognitive wireless sensor networks(C-WSN).An analytical expression of transmission energy consumption and an exact closed-form expression of average bit error rate(BER) with BPSK modulation are derived. 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.更多还原