Blind demodulation algorithm for MFSK signal based on all digital phase-locked loop
基于全数字锁相环的MFSK信号盲解调算法*

To solve the problem of the demodulation of MFSK signal in non-cooperative communication,this paper presented a new blind demodulation algorithm for MFSK signal based on all-digital enhanced phase-lock loop where no apriori information about the signal was needed.Used a few symbols to extract symbol rate at first,and then accomplished clock synchronization,modulation level identification and symbol identification simultaneously based on the frequency tracking signal of the all-digital enhanced phase-lock lo...