认知无线传感器网络中基于GSC的协作传输机制  

Cooperative transmission scheme based on GSC for cognitive wireless sensor network

作　　者：秦智超[1] 周正[1] 赵小川[1] 章杨[1,2] 

机构地区：[1]北京邮电大学泛网无线通信教育部重点实验室,北京100876 [2]中国石油大学(华东)计算机与通信工程学院,山东青岛266555

出　　处：《通信学报》2013年第9期158-165,共8页Journal on Communications

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

摘　　要：针对无线传感器网络中单个节点能量和发射功率均受限的特点,在发送端已知信道状态信息(CSI)的条件下提出了一种基于广义选择合并算法(GSC)的协作传输机制。根据GSC算法和节点的功率受限条件来决定具体参与协作传输的节点个数,并结合信道状态和节点的剩余能量来对节点进行调度。理论分析和仿真结果表明该机制能够有效地延长网络寿命。In response to the features that the sensor nodes are energy-limited and power-constrained in wireless sensor network, a cooperative transmission scheme based on general selection combine（GSC） algorithm was proposed when the channel state information （CSI） was known to the transmitter. The number of cooperative nodes was depended on the GSC algorithm subject to a power constraint at the transmitter, and these selected nodes were scheduled according to the channel sate and individual residual energy. The analysis and simulation results show that the proposed scheme can effec-tively prolong the network lifetime.

关 键 词：无线传感器网络 协作OFDM 信道状态信息 广义选择合并 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]