If the "0" and "1" to change the carrier phase, called phase shift keying.
frequency differential phase shift keying demodulator
This is the AWGN Channel 4 phase shift keying modulation, as well as its perf...
The first segment 310 of the TPS data block (bit so) is an initialization bit for a differential binary phase shift keying (2-PSK) modulation.
Analysis on transmission characteristics of differential phase shift keying signal of continuous pressure wave in drilling fluid channel