分簇ad hoc网络协同MIMO传输策略  

Cooperative MIMO transmission scheme for clustered ad hoc networks

作　　者：冯文江[1] 赵伟[1] 王东[1] 

机构地区：[1]重庆大学通信工程学院,重庆400044

出　　处：《通信学报》2012年第3期1-9,共9页Journal on Communications

基　　金：重庆市自然科学基金重点资助项目(CSTC2009BA2064);中央高校基本科研业务费基金资助项目(CDJXS11162236)~~

摘　　要：对协同MIMO传输所具有的潜力进行研究,提出一种适用于分簇ad hoc网络的传输策略,包括2个主要方面:其一是加权协同节点选择算法,该算法综合考虑节点间不对称的双向信道状态、节点剩余能量和节点连接度等因素,选择最优节点的集合构成协同MIMO系统;其二是虚拟节点之间虚拟链路的建立及维护机制。仿真表明,有节点选择的协同MIMO比SISO传输能获得更大的信道容量,比无节点选择的协同MIMO传输降低能耗约70%。The potential of cooperative multiple-input multiple-output（CMIMO） transmission was explored.An accord-ing CMIMO transmission scheme was proposed for clustered ad hoc networks,including two critical aspects.The first was weighted cooperative node selection algorithm,which synthesized the asymmetrical bi-directional channel state in-formation（CSI） between nodes,as well as the nodes＇ residual energy and connectivity.Consequently,a set of optimal nodes was selected to develop the CMIMO system mentioned above.The second was the mechanism of establishing and maintaining virtual link between two virtual nodes.Simulation shows that the proposed CMIMO transmission scheme affords higher capacity against SISO,and the scheme with node selection is more energy-efficient than that without node selection for the 70% energy saved.

关 键 词：协同MIMO传输 信道状态信息 剩余能量 连接度 

分 类 号：TN919.1[电子电信—通信与信息系统]