And the method of DDWS (direct digital wave synthesis) is adopted to realize the signals of MFSK (multi-frequency shift keying) and OFDM (orthogonal frequency division multiplexing).
采用DDWS(直接数字合成)方法，产生了MFSK (m元频移键控)和OFDM(正交频分复用)两种水声通信信号。
Demodulation techniques on digital communication signals, such as MASK, MFSK and MPSK signals, is discussed in this paper.
本文主要研究了数字通信信号MASK,MFSK,MPSK信号的解调技术，重点研究了盲信号处理中通信信号的软件解调。
Demodulation techniques on digital communication signals, such as MASK, MFSK and MPSK signals, is discussed in this paper.
本文主要研究了数字通信信号MASK,MFSK,MPSK信号的解调技术，重点研究了盲信号处理中通信信号的软件解调。
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