协作网络中基于干扰分析的协作建立机制  

Cooperation Initiation Mechanism Based on Analysis of Interference in Cooperative Network

作　　者：吴媛媛[1] 

机构地区：[1]重庆邮电大学通信与信息工程学院,重庆400065

出　　处：《科学技术与工程》2015年第11期75-79,共5页Science Technology and Engineering

基　　金：国家重大科学仪器设备开发专项(2012YQ20022404);重庆市自然科学重点基金(CSTC2013jjB 40001)资助

摘　　要：针对协作通信中调度复杂度和干扰问题,提出一种基于协作分集和用户干扰的折中分析算法。该算法首先分析协作与非协作模式下中断概率与干扰的关系,然后分析在不同传输距离和干扰强度下中断概率的变化情况,通过对两种模式下中断概率的对比,制定出一个协作建立的判断方法。最后仿真结果表明,协作通信在传输节点稀疏分布的情况下中继节点协作是有益的,反之,在网络密度大的时候,非协作则更好。Considering the problem of scheduling complexity and the interference in the cooperative communication, an algorithm is proposed based on the tradeoff between cooperative diversity and additional interference. At first, the relationship between outage probability and interference is analyzed. And then, the variation of outage probability under the different transmission distance and the intensity of the interfering is analyzed. By comparing the outage performance of non-cooperative and cooperative strategies, a criterion which determines whether implement cooperation or not is derived. Finally, simulation demonstrates that a cooperative strategy is preferred for sparse networks, and as the wireless network becomes more dense, the diversity gain is eventually eliminated by the excessive amount of interference.

关 键 词：协作分集 用户干扰 中断概率 协作建立 

分 类 号：TN929.53[电子电信—通信与信息系统]