摘要
由于数字调相信号自身的特点,此种调制方式广泛应用于卫星测控链路、对合作通信或非合作对抗而言,对这些数字调相信号的识别区分显得十分重要。从本质上认识调相信号的特征是进行调制识别的基础。文章借助MATLAB仿真工具从谱特征角度对比分析了BPSK、QPSK、OQPSK、UQPSK信号的特性,并进而提出一种基于谱特征的数字调相信号调制识别方法。
By the feature, BPSK, QPSK, OQPSK, UQPSK are used in TTC(Track Telemetry and Control) of Satellite Link in recent years. So the method of automatic modulation recognition is becoming very important. Study the spectrum feature of BPSK, QPSK, OQPSK, UQPSK is the base. This paper analyses the spectrum feature of this four by MATLAB. And give a method of automatic modulation recognition.
出处
《通信技术》
2005年第S1期22-25,共4页
Communications Technology