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本文讨论声频带多载波电报传输系统及调制与解调的时间划分处理问题。本系统用8相—2电平综合调制,可以传输208路电报或速率为8500毕特/秒的数据信号。所有调制与解调过程均用数字化技术。由于采用时间分配技术,仅用了一个公共的调制器和解调器,从而使设备的规模减小,成本降低。
This article discusses the audio band multi-carrier telegraph transmission system and the modulation and demodulation time division processing issues. The system uses 8-phase-2 integrated modulation, 208 telegrams can be transmitted or the rate of 8500 bit / s data signal. All modulation and demodulation process using digital technology. Due to the time allocation technique, only one common modulator and demodulator is used, resulting in a reduction in the size and cost of the device.