| 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。 |
| 关键词: 认知无线电 频谱分配 模糊逻辑 系统吞吐量 |
| DOI： |
|
| 基金项目: |
|
| Spectrum Allocation Using Fuzzy Logic for Cognitive Radio Systems |
| WEN Kai,FU Ling-sheng,FU Xiao-ling |
| (Chongqing Information Technology Designing Co., Ltd., Chongqing University of
Posts and
Telecommunications,Chongqing 400065,China;Institute of the Applications of Adv
anced Telecommunications
Technology,Chongqing University of Posts and Telecommunications,Chongqing 4000
65,China) |
| Abstract: |
| To analyse spectrum allocation issue more comprehensively and highlight the perf
ormances of effectiveness and fairness of the system, a spectrum allocation sche
me using fuzzy logic for cognitive radio(CR) is proposed.First the concept of fu
zzy logic system(FLS) is given, and then the FLS is used to comprehensively anal
yse the characteristics of the perceived idle spectrum and the secondary users，
finally the idle spectrum is allocated to secondary users in accordance with sys
tem throughput maximum, fairness and random allocation criteria.Simulation resul
ts confirm the feasibility of scheme. |
| Key words: cognitive radio(CR) spectrum allocation fuzzy logic system throughput |
