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认知无线系统中主用户检测技术研究

发表时间:2009-09-30  浏览量:1342  下载量:639
全部作者: 赵志远,李建东,丁汉清
作者单位: 西安电子科技大学综合业务网国家重点实验室信息科学研究所
摘 要: 在认知无线通信系统中,应用传统的频谱感知方法对某一频段进行感知时,所有未授权用户必须在这一频段保持静默。静默时间越长,通信效率越低。提出了连续感知的方法,取消了静默时隙,即使未授权用户之间正在进行通信,也可以实现对信道的连续感知。这种方法不仅提高了通信效率,而且减少了感知时间,提高了感知性能。
关 键 词: 通信技术;认知无线电;频谱感知;协同频谱感知;连续频谱感知
Title: Research on primary user detection technique in cognitive radio system
Author: ZHAO Zhiyuan, LI Jiandong, DING Hanqing
Organization: The State Key Laboratory of Integrated Services Network, Information Science Institute, Xidian University
Abstract: In cognitive radio networks, all unauthorized users must keep silence on the spectrum band what they are sensing with the traditional spectrum sensing methods. The longer the silence is, the lower the efficiency of communications is. This paper provides a continuous spectrum sensing method. The silent time is canceled in this method. With the use of this method, the unauthorized users can sense the spectrum even if they are communicating with each other. This method not only improves the communication efficiency, but also reduces the sensing time and enhances the performance of spectrum sensing.
Key words: communication technology; cognitive radio; spectrum sensing; cooperative spectrum sensing; continuous spectrum sensing
发表期数: 2009年9月第18期
引用格式: 赵志远,李建东,丁汉清. 认知无线系统中主用户检测技术研究[J]. 中国科技论文在线精品论文,2009,2(18):1884-1888.
 
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