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]
