A TDM with 5 channels and 50Kbps with 1 bit per frame and 3 extra bits per frame

Question

A TDM with 5 channels and 50Kbps with 1 bit per frame and 3 extra bits per frame A) what is data rate B) what is data rate for 2 bits pre frame and 3 extra bits C) which is better? D) if 6 channels and 50kbps and we want same data rate as B what should we change? A TDM with 5 channels and 50Kbps with 1 bit per frame and 3 extra bits per frame A) what is data rate B) what is data rate for 2 bits pre frame and 3 extra bits C) which is better? D) if 6 channels and 50kbps and we want same data rate as B what should we change? A TDM with 5 channels and 50Kbps with 1 bit per frame and 3 extra bits per frame A) what is data rate B) what is data rate for 2 bits pre frame and 3 extra bits C) which is better? D) if 6 channels and 50kbps and we want same data rate as B what should we change?

Explanation / Answer

Solution:

A)
Each output frame carries 1 bit from each source plus 3 extra bit.
Frame size = 1 + 3 = 4 bits.

Data Rate= (50000 frames/s) X (4 bits/frame)
   =>20 Kbps

B)
Each output frame carries 2 bit from each source plus 3 extra bit.
Frame size = 2 + 3 = 5 bits.

Data Rate= (50000 frames/s) X (5 bits/frame)
   =>25 Kbps

c) 2 bits per frame and 3 extra bit is better

D) We should change the bits per frame and the extra bits

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