采用免疫遗传的无线传感器网络波束成形机制  

Beamforming Scheme Based on Immune Genetic Algorithm for Wireless Sensor Networks

作　　者：秦智超[1] 周正[1] 赵小川[1] 

机构地区：[1]泛网无线通信教育部重点实验室(北京邮电大学),北京100876

出　　处：《北京邮电大学学报》2013年第1期77-81,共5页Journal of Beijing University of Posts and Telecommunications

基　　金：国家科技重大专项项目(2009ZX03006-009);国家自然科学基金项目(60902046);韩国知识经济部仁荷大学ITRC基金项目(NIPA-2011-C1090-1111-0007)

摘　　要：针对无线传感器网络中单个节点能量和通信距离有限的特点,提出了一种基于免疫遗传的波束成形机制.首先分析了存在相位差的情况下的节点发射系数和选取节点数对系统能耗的影响;然后根据节点的剩余能量和相位结合旋转因子来循环选择参与发射的节点,并引入免疫遗传算法对各节点的发射系数进行调整.理论分析和仿真结果表明,该机制有效均衡了节点间的能耗,延长了网络寿命.Considering the limitation of communication capacity and energy for nodes in wireless sensor networks, a beamforming scheme based on immune genetic algorithm is proposed. First,the impact of the transmission coefficients and the number of selected nodes whose arrival phase have difference on the net- work energy consumption is analyzed. Then, the nodes participating in transmission are selected according to their residual energy and arrival phase combined with rotated factor and their transmission coefficients are adjusted using immune genetic algorithm. Simulation shows that the energy consumption among the nodes can be balanced and the network lifetime can be prolonged effectively.

关 键 词：无线传感器网络 波束成形 能量均衡 

分 类 号：TN393[电子电信—物理电子学]