基于模糊控制的认知无线电路由选择策略  

Cognitive radio routing selection strategy based on fuzzy control

作　　者：韩庆文[1] 尚淑敏[1] 朱颖合[2] 

机构地区：[1]重庆大学通信工程学院,重庆400044 [2]杭州电子科技大学自动化学院,杭州310018

出　　处：《计算机应用研究》2011年第1期262-264,共3页Application Research of Computers

基　　金：国家自然科学基金资助项目(NSTC60872038);重庆市自然科学基金资助项目(CSTC2009BB2205)

摘　　要：一般无线网络的路由选择算法由于固定的信道分配不适合直接应用于认知无线电网络,需要针对认知无线电网络特有的信道动态性特点提出合适的路由选择策略。结合按需路由的基本流程,引入模糊控制技术,在充分考虑信道利用率和信道感知度这两种度量标准的影响下,提出一个可行的具有较小路由选择代价和最短路径双重优点的路由选择策略。仿真结果表明,基于模糊控制的路由选择策略较一般无线网络的按需路由协议具有更好的数据包投递率性能和吞吐量性能。Because of channels ＇ fixed allocation the routing algorithms in general wireless network can ＇ t be directly used for cognitive radio network, the appropriate routing selection strategy needs to be provided aiming at the specific characteristics of dynamic channels in cognitive radio network. While combining with the basic process of on-demand routing, introducing fuzzy control technology and taking full account of the influence of two metrics which were channel utilization and channel percep- tion, then provided a feasible routing selection strategy with double advantage of lower cost and shortest path. Simulation re- suits show that, compared with the on-demand routing protocol in general wireless network, the routing selection strategy based on fuzzy control has better packet delivery ratio performance and throughnut nerformance.

关 键 词：认知无线电 模糊控制 路由选择代价 最短路径 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]