1. Assume that a channel occupies a bandwidth of 90 kHz. We need to combine eleven
channels into a link with a bandwidth of 1.09 MHz, from I to 2.09 MHz with 10 kHz
guard band. Show the configuration, using the frequency domain.2. Ten sources, two with a bit rate of 80 Mbps, four with a bit rate of 20 Mbps and four
with a bit rate of 10 Mbps are to be combined using TDM. If the unit size is 10 bitsdetermine the following questions
a) lnput bit duration
b) Output bit duration
c) Frame rate3. Seventeen sources, four with a bit rate of 400 Mbps, eleven with a bit rate of 200 Mbps
and two with a bit rate of 100 Mbps are to be combined using TDM. If the unit size is 20
bits determine the following questions:a. How this can be achieved?b. Frame sizec. Output time slot
d.Bit rate
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