Dept. of Electrical Engineering
University of Toronto
Communication Systems
ECE316
Problems 1
2 + 2j
1. Simplify the expression - + 5 j and put it in both polar and rectangular form.
1 2j
2. Consider
Dept. of Electrical Engineering
University of Toronto
Communication Systems
ECE316
Problems 3
1. Consider the signal x ( t ) = cos ( 2 f m t ) , where f m = 1 KHz. This signal is multiplied by a
squar
University of Toronto
Department of Electrical and Computer Engineering
Communication Systems
ECE316
Elvino S. Sousa (Fall - 2013)
Block Diagram of a Communication System
Interference
Input
message
In
ECE316
Communication Systems
E. S. Sousa
Problems 6 - FM
11. Consider a message signal that is a pulse ( t ) = 2 if 0 t - ms. Consider a carrier
10
4 cos ( 2 f c t ) , where f c = 100 KHz. If k f = 5
Dept. of Electrical Engineering
University of Toronto
Communication Systems
ECE316
Problems 2
1. Find the Fourier transform of the following signal. Simplify the expression as much as possible.
2
1
3
Dept. of Electrical Engineering
University of Toronto
Communication Systems
ECE316
Problems 4
1. The signal x ( t ) =
( t kT ) is input to an ideal band-pass filter with center frequency 2
k =
MHz an