基于综合检测的多调制格式信号频谱感知  

Spectrum Perception of Multi-Modulation Signal Based on Integrated Detection

作　　者：陈纬[1] 张旭东 邢志强[3] 宋鹏[3] 

机构地区：[1]清华大学电子工程系,北京100085 [2]中国电子设备系统工程公司研究所,北京100041 [3]北方工业大学信息工程学院,北京100144

出　　处：《电声技术》2013年第3期63-68,共6页Audio Engineering

基　　金：北京市自然科学基金项目;北京市教育委员会科技发展计划重点项目(Kz2010100009009)

摘　　要：频谱感知是认知无线电领域的关键技术之一。分析了频谱感知发射机探测部分的两大主要手段:能量检测和静态循环平稳检测的理论依据和实现机理,并将其作为一个有机整体应用于不同调制格式的发射信号检测中,根据系统有效性和可靠性指标(虚警概率、复检概率、检测概率)探索并优化相关参量(能量检测双门限、静态循环功率谱检测门限),最后仿真分析得到检测概率对接收端信噪比的变化趋势,得到不同调制格式下的兼顾可靠性和有效性的检测效果。Spectrum sensing is a key technology in the field of cognitive radio. Two main measures of spectrum sensing transmitter detecting part are analyzed ： energy detection and static cycle stationary detection, as well as their theory basis and implementation mechanism. Then those two measures are combined as an organic whole to appy in emission signal detec- tions of different modulation formats. Subsequently, The relevant parameters （ energy detection double threshold, static cy- clic spectrum detection threshold） are explored according to validity and reliability index （false alarm probability, redetect probability and detection probability） . Finally, the detecting effect consideration to both reliability and validity in different modulation formats can be achieved by simulating and analyzing the changing trend of detection probability associated with SNR at the receiving end.

关 键 词：能量检测 循环检测 频谱感知 调制格式 

分 类 号：TN912[电子电信—通信与信息系统]