The advantage of a differential phase-shift keying (DPSK)system is that_____________ is (are)not required.
A)carrier synchronizer
B)voltage-controlled oscillators
C)upper and lower sidebands
D)carrier recovery circuitry

Question

Quizplus · Accepted Answer

DPSK system does not require carrier recovery circuitry as the phase of the carrier signal is not important in this modulation scheme. It only depends on the changes in phase between consecutive symbols. Therefore, DPSK systems are more robust to carrier frequency offsets and phase noise.

The Advantage of a Differential Phase-Shift Keying (DPSK)system Is That_____________