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中文摘要: 协作式(虚拟)MIMO技术被认为是新兴有效的传感器网络节能解决方案之一．本文在考虑网络电路能耗的情况下，
采用跨层设计方法提出了一种能量高效的多跳协作式V-BLAST传输策略．为了达到网络寿命最大化的目标，本文建立并分
析了系统能耗模型，在此基础上对传输速率、传输跳数、分簇个数和协作式天线节点个数等网络参数进行了联合优化．仿真结
果表明，通过选取最优网络参数，本文所提出的策略相比传统的多跳路由协议和LEACH协议能显著降低节点传输能耗和延
长网络寿命．
Abstract:Cooperative MIMO technique is considered as one of the new solutions to minimize the energy
consumption in wireless sensor networks．Considering the circuit energy consumption，we propose a multi—
hop cooperative V-BLAST transmission scheme coupled with cross-layer desigm In our design，the trans—
mission rate，the number of clusters，the number of cooperative nodes and the number of hops are jointly
optimized．Simulation results show significant energy savings and lifetime maximization of the network
with judicious choice of network parameters．
文章编号：cg071232 中图分类号： 文献标志码：
基金项目:
XU Kan-ru LIU Wei CHENG Wen-qing FENG Zhen YANG Zong-kai
Departmentof Electronics and Information Engineering，Huazhong University of Science and Technology，Wuhan 430074，China
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