认知无线电系统中利用模糊逻辑的频谱分配  

Spectrum Allocation Using Fuzzy Logic for Cognitive Radio Systems

作　　者：文凯[1,2] 付玲生[2] 傅小玲[2] 

机构地区：[1]重庆邮电大学重庆信科设计有限公司,重庆400065 [2]重庆邮电大学通信新技术应用研究所,重庆400065

出　　处：《电讯技术》2011年第3期69-74,共6页Telecommunication Engineering

摘　　要：为了较全面地分析频谱分配问题,突出系统的效益和公平性能,提出了一种利用模糊逻辑的认知无线电频谱分配方案。首先给出模糊逻辑系统(FLS)的概念,然后利用FLS综合分析感知空闲频谱和次用户的特性,最后结合系统吞吐量最大、公平性和随机分配3种准则将空闲频谱分配给次用户使用。仿真结果证实了方案的可行性。To analyse spectrum allocation issue more comprehensively and highlight the performances of effectiveness and fairness of the system, a spectrum allocation scheme using fuzzy logic for cognitive radio（CR） is proposed. First the concept of fuzzy logic system（FLS） is given, and then the FLS is used to comprehensively analyse the characteristics of the perceived idle spectrum and the secondary users, finally the idle spectrum is allocated to secondary users in accordance with system throughput maximum, fairness and random allocation criteria. Simulation results confirm the feasibility of scheme.

关 键 词：认知无线电 频谱分配 模糊逻辑 系统吞吐量 

分 类 号：TN915.9[电子电信—通信与信息系统]