基于无线电环境地图信息辅助的协作频谱感知算法  

Radio environment map information aided cooperation spectrum sensing algorithm

作　　者：刘昌明[1] 王岭[2] 李林[1] 

机构地区：[1]重庆电子工程职业学院,重庆401331 [2]重庆大学通信工程学院,重庆400030

出　　处：《重庆邮电大学学报（自然科学版）》2011年第6期705-711,共7页Journal of Chongqing University of Posts and Telecommunications(Natural Science Edition)

基　　金：重庆市教委科学基金(KJ102201);重庆市教委高等学校教改重点项目(09-2-105);重庆市教委高等学校"质量工程"专项建设项目(渝教财[2009]51号)~~

摘　　要：针对基于信噪比(signal noise ratio,SNR)合并协作感知算法实用性限制问题,提出一种无线电环境地图(radio environment maps,REM)信息辅助协作感知算法,该算法利用REM存储的关于授权用户发射台与感知用户位置信息辅助计算各用户合并权重系数。仿真表明,该算法在高斯白噪声(additive white gaussian noise,AWGN)信道和瑞利衰落信道下性能接近基于SNR合并算法,且算法实用性强。In this paper, in order to salve the implementation limitation problem of SNR combination cooperation detection, we propose a REM-information aid cooperation spectrum detection algorithm, using the location information of authorized TV transmitter and CR node recorded by the REM to calculate the combination coefficient. The simulation results show that this algorithm has the similar performance in both AWGN channel and Rayleigh channel conditions as the SNR combination algorithm and can be easily used in the practice scenario.

关 键 词：认知无线电 频谱感知 协作 无线电环境地图 

分 类 号：TN929[电子电信—通信与信息系统]