多径瑞利衰落信道下的认知电台干扰容限稳健估计  

Interference Tolerance Robust Estimation for Cognitive Radio in Multi-Path Rayleigh Fading Channel

作　　者：高瞻[1] 徐庆龙[1] 

机构地区：[1]解放军理工大学通信工程学院,南京210007

出　　处：《电子信息对抗技术》2015年第5期46-49,74,共5页Electronic Information Warfare Technology

基　　金：国家自然科学基金项目(No.61172062;No.61301160);江苏省自然科学基金项目(No.BK2011116)

摘　　要：认知无线电技术因其接入技术灵活,被认为是解决当前民用领域频谱资源越来越匮乏、频谱分配越来越困难的有效手段之一。在军事领域已经出现了具有认知功能的无线电台,该认知电台能够智能地感知周围频谱环境,通过选择无干扰或者干扰较小的通信频段建立新的通信链接来避免敌方的恶意干扰。在多径瑞利衰落信道条件下,提出一种快速稳健搜索算法,能够获取认知无线电台的干扰容限,从而对其实施精确干扰,迫使目标系统重新换频建链。Cognitive radio is considered as one of the most effective methods to solve the scarcity and allocation problems of spectrum resources. In the military field,radio with cognitive function has appeared which can intelligently detect the spectrum environment around and choose the undisturbed or partly disturbed band to establish new communication links to avoid malicious interference. A fast robust search algorithm is proposed in Rayleigh fading channel conditions. By acquiring the interference tolerance of cognitive radio,accurate jamming can be released and target radio is forced to change communication frequency.

关 键 词：认知无线电 通信对抗 瑞利衰落 干扰容限 

分 类 号：TN975[电子电信—信号与信息处理]