有线数字电视射频信号调制识别研究  

Modulation Recognition on RF Signal in Digital Cable TV System

作　　者：佘方毅[1] 刘海涛[1] 杨方正[1] 

机构地区：[1]国家广播电影电视总局广播科学研究院,北京100866

出　　处：《中国有线电视》2007年第12期1143-1145,共3页China Digital Cable TV

摘　　要：从有线数字电视射频信号特征参数提取着手,建立了一套识别16QAM和64QAM射频信号调制方式的数学算法。试验仿真和实际信号验证表明,该算法计算量小,识别率高,易于实现。本项研究为广播电视安全播出和数字电视终端整合提供有益的技术实践。Based on the characteristic extracting of RF signal in digital cable TV system, this paper puts forward an algorithm for modulation recognition between 16QAM and 64QAM RF signals. Results of Computer simulations and real QAM signal testing show that the modulation recognition algorithm is reliable and feasible. This paper brings a useful technical practice to the safety of broadcast television broadcasting and the integration of digital TV terminals.

关 键 词：射频信号 调制识别 QAM 有线数字电视 

分 类 号：TN943.6[电子电信—信号与信息处理]