全数字2DPSK调制解调系统，为VHDL语言。包括512分频器，M序列发生器等。整个过程完成2DPSK的调制与解调。-The full the digital 2DPSK modem system for the VHDL language. Including the 512 divider, the M-sequence generator. The whole process is completed 2DPSK modulation and demodulation.