CRAHNs中联合功率控制的最小中断概率路由算法  

Minimum Outage Probability Joint Power Control and Routing Algorithm in CRAHNs

作　　者：邝祝芳[1,2] 陈志刚[2] 

机构地区：[1]中南林业科技大学计算机与信息工程学院,长沙410004 [2]中南大学软件学院,长沙410083

出　　处：《小型微型计算机系统》2016年第10期2258-2263,共6页Journal of Chinese Computer Systems

基　　金：国家自然科学基金项目(61309027;61379057;61073186)资助;湖南教育厅优秀青年基金项目(13B148)资助;中国博士后基金面上项目(2013M542136)资助;湖南省博士后科研资助专项计划项目(2014RS4027)资助

摘　　要：认知无线Ad Hoc网络(Cognitive Radio Ad Hoc Networks,CRAHNs)中某一链路的SINR低于门限值时,将导致端到端路径中断,针对该问题,以最小化路径的中断概率为目标,研究次用户节点总发射功率受限,以及次用户对主用户干扰功率受限的情况下,联合功率控制的路由与频谱分配策略.联合功率控制的路由与频谱分配问题非常复杂,是NP问题,为了有效求解该问题,提出基于遗传算法的联合功率控制的路由与频谱分配算法JPCRA.通过大量的仿真发现,我们提出的JPCRA算法能达到预定目标,构造的路径不仅具有较低的中断概率,而且有效地降低了对主用户节点的干扰功率.An end-to-end route outage occurs, if SINR at the receiver of any link between source and destination fails to achieve to a value greater than or equal to a predetermined threshold in cognitive radio ad hoc networks （ CRAHNs）. Aim at this problem, joint power control, routing and spectrum （ channel） allocation scheme is investigated under total transmission power and interference con- straints to primary user （PU）. The goal is to minimize the end-to-end outage probability of the CRAHNs. The joint power control, routing and channel allocation problem is very complicated and NP. In order to get the optimal solution for this problem, an algorithm joint power control, routing and channel allocation based on genetic algorithm （JPCRA} is proposed in this paper. Simulation results show that the proposed algorithm can achieve the expected goal. It can achieve lower outage and interference to PU.

关 键 词：认知无线Ad HOC网络 路由 功率控制 中断概率 

分 类 号：TP393[自动化与计算机技术—计算机应用技术]