1、用数字信源模块、数字终端模块、位同步模块及帧同步模块连成一个理想信道时分复用数字基带通信系统，使系统正常工作。

2、用数字信源、数字终端、数字调制、2DPSK解调、载波同步、位同步及帧同步等七个模块构成一个理想信道时分复用2DPSK通信系统并使之正常工作。

3、用数字信源、数字终端、数字调制、2FSK解调、位同步及帧同步等六个模块，构成一个理想信道时分复用2FSK通信系统并使之正常工作。-1, with the number of source modules, digital terminal module, bit synchronization module and frame synchronization modules together into an ideal channel time-division multiplexing digital baseband communications system, make the system work properly. 2, with the number of sources, digital terminals, digital modulation, 2DPSK demodulation, carrier synchronization, bit synchronization and frame synchronization seven modules constitute an ideal channel time-division multiplexing communication system 2DPSK make it work properly. 3, with the number of sources, digital terminals, digital modulation, 2FSK demodulation, bit synchronization and frame synchronization six modules, constitute an ideal channel time-division multiplexing communication system 2FSK make it work properly.