Communication Systems

Q1: 24 telephone channels, each band limited to 3.4 kHz, are to be time division multiplexed by using PCM, calculate the bandwidth of PCM system for 128 quantization levels and an 8 KHz sampling frequency

A 192 kHz

B 2 MHz

C 1.299 MHz

D 1.54 MHz

ANS:D - 1.54 MHz

Given, n = 24, fm = 3.4 kHz M = 128, 2N = 128  n = 7 But fs = 2fm, here we will consider fs (sampling) frequency instead at 2fm  2 x 3.4 kHz  6.8 KHz. B.W. = [24(7 + 1)] 8 kHz = 1.54 MHz.



img not found
img

For help Students Orientation
Mcqs Questions

One stop destination for examination, preparation, recruitment, and more. Specially designed online test to solve all your preparation worries. Go wherever you want to and practice whenever you want, using the online test platform.