Communication Systems (EE-361)
INTRODUCTION AND COURSE OUTLINES
Dr. Waleed Tariq Sethi
Assistant Professor
Faculty of Electrical Engineering
GIK Institute of Engineering Sciences and Technology
Email : wsethi@giki.edu.pk
Chapter:3 – Analysis and Transmission
of Signals
Contents
Introduction
Aperiodic Signal Representation
Aperiodic Signal Representation
Fourier Representation of gTo(t)
Fourier Representation of gTo(t)
Transforms of Some Useful Func
Transforms of Some Useful Func
Example
Properties of Fourier Transform
Properties of FT
Signal Transmission Through a
Linear System
Linear Systems
Linear Time Invariant Systems (LTI)
Frequency Response of LTI System
Distortionless Transmission
Distortionless Transmission
Ideal and Practical Filters
Ideal and Practical Filters
Ideal Low Pass Filter
Practical Filters
Example: Linear System RC Circuit
Signal Distortion over a Comm
Channel
Linear Distortion
Spectral Densities
Signal Energy: Parseval’s Theorem
Example
Energy Spectral Density
Energy Spectral Density
Essential Bandwidth of a signal
Example
Energy Of Modulated Signal
Energy Of Modulated Signal
Energy Of Modulated Signal
Time Autocorrelation Function
and ESD
Time Autocorrelation Function
and ESD
ESD of the Input and the Output
Signal Power and
Power Spectral Density
Signal Power and
Power Spectral Density
Signal Power and
Power Spectral Density