基于MUSIC方法的ALE信号8FSK解调

8FSK Demodulation of The ALE Signal Based on MUSIC Method

短波自动链接建立(ALE)系统的调制解调一直是一项关键技术。在MUSIC功率谱估计方法的基础上分析了一种ALE信号的8FSK解调方法,并利用Matlab软件进行了仿真分析,同时对AWGN信道下的误码率进行了分析。仿真结果表明,本方法能有效压制噪声带来的影响,系统误码率小。

The modulation and demodulation of short wave automactic link estabhshment（ALE） system is always a key technique. This paper analyzes a kind of 8FSK demodulation method of ALE signal based on MUSIC power spectrum estimation method, and performs the simulation and analysis by means of Matlab software,at the same time analyzes the error rate in AWGN channel. The simulation result shows that this method can effectively suppress the influence of the noise, and the error rate of the system is low.