AF-DSTC协同通信的节点选择策略研究  

Node Selection Scheme in AF-DSTC Cooperative Communication

作　　者：昌纪师[1] 成文婧[2] 马东堂[2] 

机构地区：[1]中国卫星海上测控部,江苏江阴214431 [2]国防科学技术大学,湖南长沙410073

出　　处：《通信技术》2011年第8期24-26,共3页Communications Technology

摘　　要：协同通信的节点选择问题是建立无线协同网络的一个关键问题,提出了一种AF-DSTC协同通信模型的分布式节点选择策略,通过对接收信噪比表达式的推导,以最大化接收端信噪比为基础,建立了一个仅与候选节点自身信道条件有关的选择函数,通过各候选节点的分布式运算来选择最优的协同节点。理论分析和仿真结果证明,该策略能够在性能上逼近理论最优的穷尽查找方法,并且能极大地减少实现复杂度。The node selection problem is very important in building up a wireless cooperative communication network.A distributed node selection scheme based on AF-DSTC is proposed.Through the derivation of SNR expression,a function only related to the channel condition of each candidate node is established.The best cooperative nodes are selected from the distributed operation of candidate nodes,thus to maximize the receiving SNR.Simulation results show that this scheme could approximate to the theoretically optimal exhaustive look-up scheme in performance while is of considerably low complexity.

关 键 词：协同通信 节点选择 分布式空时编码 

分 类 号：TN929.5[电子电信—通信与信息系统]