多径衰落信道下基于循环累积量的调制分类算法  

The Identification Classification Algorithm Based on Cyclic Statistics in Multipath Fading Channel

作　　者：王辉[1] 王斌[1] 

机构地区：[1]解放军信息工程大学信息系统工程学院,河南郑州450002

出　　处：《信号处理》2016年第10期1194-1201,共8页Journal of Signal Processing

摘　　要：针对多径衰落信道,通过利用各阶循环累积量来对常见单载波信号进行调制分类。首先分析推导了在多径衰落信道下模拟和数字单载波信号一阶、二阶和四阶的循环累积量特征,寻找出不同信号在特定循环累积量下的谱峰特征的区别,最后利用CAFR检测算法通过树形判决完成信号的调制分类。通过理论推导和仿真分析,验证了算法在多径衰落信道下调制分类的可行性和抗噪声性能。算法不需要信号的先验知识,在多径衰落信道下性能鲁棒,适用场合较广。For muhipath fading channels, the modulation of common single-carrier signals are classified through the use of the order Cyclic Cumulants. The analysis and derived of fist order, second-and fourth-order cycles statistical features of a variety of single-carrier signal in muhipath fading channels, and looking for characteristic difference in the statistical char- acteristics of the particular cycle peaks distinction, last complete signal modulation classification using CAFR detection al-gorithm through the tree judgment. Verify the feasibility of the algorithm in muhipath fading channel modulation classification by theoretical analysis and simulation analysis. The algorithm does not require a priori knowledge of the signal, has the robust performance in muhipath fading channel and a wider application of occasions.

关 键 词：调制识别 单载波信号 多径衰落信道 循环累积量 

分 类 号：TN911.72[电子电信—通信与信息系统]