- Problem 1 7 For Each Of The Following Modulation Cases Below Sketch I The Message Wave Form M T Ii The Modul 1 (45.63 KiB) Viewed 14 times
Problem 1. (7%) For each of the following modulation cases below, sketch (i) the message wave- form m(t), (ii) the modulated waveform s(t), (iii) the message magnitude spectrum M(S), and (iv) the modulated spectrum S()); and thereby (v) determine the transmission bandwidth Br. (a) Classical AM, m(t) = A - rect(t/Tp), where Tp = 10-3 seconds; A=L+3 where L is the last digit of your student ID number; assume Ac = 2 and fe = 100MHz; Choose an appropriate amplitude sensitivity ką such that overmodulation is avoided. (b) SSB-SC, m(t) is generated by: cos(2mfit) m(t) cos( 2f2t) Figure: Generator of m(t). where the carrier has A. = 3 and fe= 30Hz; the input frequencies are fi = 5Hz and 12 = 9Hz.