Modem signals will be transferred through the VHF communications system has a second modulation, through VHF communication system access to data communications.
调制解调器的已调信号通过VHF通信系统进行二次调制，通过VHF通信系统的信道实现数据通信。
Paper focuses on the use of all-digital technology design GMSK modem for a more extensive use of GMSK modulation and demodulation technology.
论文重点研究利用全数字化技术设计gmsk调制解调器，以便更广泛地使用gmsk调制解调技术。
An underwater acoustic modem system is built by employing DSP Software based on M-ary frequency-shift-key (MFSK) modulation and non-coherent detection.
采用DSP软件方法，研制了一套基于MFSK调制和非相干能量检测的水声调制解调系统。
Based on mathematical model of PSK modulation, the structure of an all digital PSK modem is proposed.
提出了一种全数字PS K调制解调器的结构模型。
W78E52B is used as a modem control MCU chip, FX589 as GMSK modulation and demodulation chip, the design and realization of the modem. The circuit is simple, reliable and small size.
利用W78E52B单片机作为调制解调器的控制芯片，FX589作为GMSK调制解调芯片，设计并实现了调制解调器。
W78E52B is used as a modem control MCU chip, FX589 as GMSK modulation and demodulation chip, the design and realization of the modem. The circuit is simple, reliable and small size.
利用W78E52B单片机作为调制解调器的控制芯片，FX589作为GMSK调制解调芯片，设计并实现了调制解调器。
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