期刊论文

中文

系统仿真学报

1004-731X

2017

29

7

1464-1471,1480

10.16182/j.issn1004731x.joss.201707010

61309027:国家自然科学基金 61379057:国家自然科学基金 13B148:优秀青年科学基金 2013M542136:中国博士后科学基金面上项目 2014RS4027:湖南省博士后科研资助专项

本校为第一机构

针对认知无线Ad Hoc网络(Cognitive Radio Ad Hoc Networks, CRAHNs)下垫式(Underlay)频谱接入模型,次用户节点对主用户干扰功率过高,以及次用户节点能量过早耗尽的问题,提出了基于粒子群优化算法的联合功率控制的路由与频谱分配算法PRSA,以最小化次用户对主用户的干扰功率与延长网络生存时间为目标,包括粒子编码与粒子初始化、适应度函数、粒子飞行。设计了包含信道与发射功率等级二元组的邻接矩阵粒子编码结构,以及重新定义了粒子的3种运算规则。仿真结果表明,PRSA能在最小化对主用户的干扰功率的同时,延长网络生存时间。

Problems of interference power to primary user by secondary userand the secondary user's running out of energy under underlay spectrum access model in cognitive radio ad hoc networks(CRAHNs) were investigated. Joint power control, routing and spectrum (channel) allocation algorithm(PRSA) based on particle swarm optimization were proposed. The goal of PRSA was to minimize interference power to primary user and prolong lifetime of CRAHNs. Particle encoding, particle initialization, fitness function, particle flight were included in PRSA. An Adjacency matrix with two-tuples containing allocated c...