基于次用户协作的主用户频谱洞周期稳态特征检测  

Cyclostationary feature detection of primary users' spectrum holes based on cooperation among secondary users

作　　者：夏金祥[1] 范平志[1] 

机构地区：[1]西南交通大学移动通信研究所,四川成都610031

出　　处：《电路与系统学报》2009年第3期1-5,共5页Journal of Circuits and Systems

基　　金：国家863计划资助项目(2005AA123950);国家自然科学基金资助项目(90604035);"两个基地"资助项目

摘　　要：实时准确地检测主用户归属的无线电系统是否存在频谱洞,即检测主用户是否在所分配的频点上处于活动状态,是机会式频谱共享法必须解决的首要问题。本文将次用户间协作检测方式和周期稳态特征检测法结合,提出了次用户协作检测主用户频谱洞的特征检测法。理论研究和和仿真分析表明,本文提出的检测法比协作能量检测法性能优越。In opportunistic spectrum sharing schemes, the first problem that must be solved is to detect whether there are spectrum holes in the radio system, to which the primary users belong. The cyclostationary feature detection of primary users＇ spectrum holes based on cooperation among secondary users is proposed in this paper. Theoretical analysis and simulation results show that the proposed method is superior to the energy detection based on cooperation among secondary users.

关 键 词：频谱洞 特征检测 协作检测 

分 类 号：TN911.23[电子电信—通信与信息系统]