基于相关的DMB-T信号的频谱感知方法研究  

Research on Spectrum Sensing Method for DMB-T System

作　　者：李佳俊[1] 

机构地区：[1]中讯邮电咨询设计院有限公司,北京100048

出　　处：《邮电设计技术》2013年第9期43-48,共6页Designing Techniques of Posts and Telecommunications

摘　　要：研究了我国地面数字多媒体广播(DMB-T)系统的频谱感知算法。理论上分析了在该系统3种模式下能量检测算法的虚警和漏检概率。对于帧头模式2提出了采用匹配滤波器方法进行频谱感知,对于帧头模式1和模式3提出了新的扩展PN序列作为本地相关序列来进行频谱感知。Spectrum sensing scheme for digital multimedia broadcasting-terrestrial system in China is investigated. The probabilities of false alarm and missed detection of energy detection for DMB-T system are analyzed theoretically. For frame header mode 2, the matched filter method is utilized to perform spectrum sensing. For frame header mode 1 and 3, extended pseudonoise se- quences are proposed to be the local correlation sequences to perform correlation based spectrum sensing.

关 键 词：认知无线电 频谱感知 相关检测 地面数字多媒体广播 漏检概率 

分 类 号：TN929.5[电子电信—通信与信息系统]