defence exam CRPF ASI Technical Mock Test 2023 Communication Systems Passband Transmission Differential Phase Shift Keying (DPSK)
In binary data transmission DPSK is preferred to PSK because
1
A coherent carrier is not required to be generated at the receiver
2
For a given energy per bit, the probability of error is less
3
The 180° phase shifts of the carrier are unimportant
4
More protection is provided against impulse noise