# 1. A modulating signal m(t) is given by m(t) = (cos(20nt) – cos(40ſt)) a. Find and…

1. A modulating signal m(t) is given by m(t) = (cos(20nt) – cos(40ſt)) a. Find and sketch the spectrum of DSB-SC signal 2m(t)cos (100nt) b. Verify that the DSB-SC modulated signal can be recovered using coherent detection. 15 nts