defence exam CRPF ASI Technical Mock Test 2023 Communication Systems Pulse Modulation Pulse Code Modulation (PCM) System
Which of the following is NOT an advantage of pulse code modulation?
1
No precise clock is necessary for precise reproduction as samples are not reliant on time.
2
It is immune to channel induced noise and distortion
3
Repeaters can be employed along a transmission channel.
4
Encoders allow secured data transmission.