engineering recuitment NIELIT Scientific Assistant Mock Test 2025 Communication Systems Pulse Modulation Time Division Multiplexing (TDM)
A voice signal band limited to 3.4 kHz is sampled at 8 kHz and pulse code modulated using 64 quantization levels. Ten such signals are time division multiplexed using on 5-bit synchronising word. The minimum channel band width will be
1
64 kHz
2
128 kHz
3
320 kHz
4
520 kHz