一种多进制频移键控信号的调制与解调  

On Mudulation Classification and Demodulation of MFSK Signals

作　　者：郑晓丽[1] 姜迪刚[2] 

机构地区：[1]解放军体育学院,广东广州510502 [2]中山大学,广东广州510080

出　　处：《现代电子技术》2007年第1期41-42,共2页Modern Electronics Technique

摘　　要：讨论了一种多进制频移键控(MFSK)信号调制分类及解调的方法,选取截获接收机输出的MFSK信号的时频曲线作为分类特征;利用无监督聚类算法求取最佳聚类数M,利用时频曲线的变换估计码元宽度;利用对应最佳聚类数的聚类中心确定取判门限,通过对时频曲线抽判判决,实现了MFSK信号的解调。理论分析证明了此算法的可行性。A new algorithm is proposed for classification and demodulation of MFSK signals, Modulation classification is realized by using the unsupervised clustering algorithm to determine the optimal number of clusters. In order to demodulate MFSK signals,the transform is used to estimate the codewidth and the centers of optimal clusters is used to determine thresholds. Theoretical analysis justify the robusticity and the efficiency of the new classification and demodulation algorithm.

关 键 词：信号侦测 多进制频移键控信号 调制分类 模糊聚类 

分 类 号：TN763[电子电信—电路与系统]