DEMODULATION METHOD OF DPSK SIGNALS, DEMODULATION SYSTEM, AND COMMUNICATION DEVICE THEREOF

原文（中文）

A demodulation method of differential phase shift keying (DPSK) signals includes receiving a modulation signal using a phase extraction circuitry. A plurality of signal points is acquired, which is constructed by phase values of point positions of the modulation signal. A demodulation value of the current signal point is acquired according to the current signal point, the previous signal point, and a predefined demodulation algorithm. A demodulation signal is acquired according to the demodulation values corresponding to the signal points. A demodulation system and a communication device are also provided.