A signal transmission system for telephone lines over microwave links consists of of FDM-SSB and

FM signaling. Each of the bandlimited signals m

(t) has bandwidth of W=6 KHz and modulates

carrier signals C

i

(t) = 10 cos 2π f

ci

i

t using USSB method, where f

= (i − 1)W, 1 ≤ i ≤ K. The

combined FM modulated signal m(t) with a modulation index of β.is then transmitted on a carrier

signal with amplitude of 20 and frequency f

(Figure Q4).

c

Figure Q4.

ci

a) [5 Marks]

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