Given the three message signals with the frequencies 4 kHz, 8 kHz and 12 kHz respectively with only two transmission cha

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Given the three message signals with the frequencies 4 kHz, 8
kHz and 12 kHz respectively with only two transmission channels
such that only one channel can be utilized at one time.
1. Transmit all the message signals over a single channel (say
Channel 1) such that their frequency bands must be separated when
the available bandwidth is 100 kHz. Analyze the given conditions
then design an analog communication system for signals transmission
and reception.give all calculations and circuit
diagram (simulations on proteous software)
2. Consider the second scenario: You have to Transmit only two
signals (4 kHz and 8 kHz) over the single transmission link (say
Channel 2) but in different time slots when the available bandwidth
is 50 kHz. Design a digital communication system for transmission
only. (Simulations required)