DPSK uses coherent form of PSK.
A. True
B. False
This question was posed to me in semester exam.
The doubt is from Linear Modulation Techniques in division Modulation Techniques for Mobile Radio of Wireless/Mobile
Right choice is B. False
Explanation: Differential phase shift keying uses noncoherent form of phase shift keying. Noncoherent form avoids the need for a coherent reference signal at the receiver. Noncoherent receivers are also easy and cheap to build.