Discrete Signals and Systems with MATLAB®

Taan S. ElAli

• Publisher: CRC Press
• Year: 2020
• ISBN:
  9781000180138
• Edition: 3
• Topic: Tecnologia e ingegneria
• Subtopic: Ingegneria elettronica e telecomunicazioni

The subject of Discrete Signals and Systems is broad and deserves a single book devoted to it. The objective of this textbook is to present all the required material that an undergraduate student will need to master this subject matter and the use of MATLAB.

This book is primarily intended for electrical and computer engineering students, and especially for use by juniors or seniors in these undergraduate engineering disciplines. It can also be very useful to practicing engineers. It is detailed, broad, based on mathematical basic principles, focused, and it also contains many solved problems using analytical tools as well as MATLAB.

The book is ideal for a one-semester course in the area of discrete linear systems or digital signal processing, where the instructor can cover all chapters with ease. Numerous examples are presented within each chapter to illustrate each concept when and where it is presented. Most of the worked-out examples are first solved analytically and then solved using MATLAB in a clear and understandable fashion.

1Signal Representation

1.1Introduction

We experience signals of various types almost on a continual basis in our daily life. The blowing of the wind is an example of a continuous wave. One can plot the strength of the wind wave as a function of time. We can plot the velocity of this same wave and the distance it travels as a function of time as well. When we speak, continuous signals are generated. These spoken word signals travel from one place to another so that another person can hear them. These are our familiar sound waves.

When a radar system detects a certain object in the sky, an electromagnetic signal is sent. This signal leaves the radar system and travels the distance in the air until it hits the target object, which then reflects back to the sending radar to be analyzed, where it is decided whether the target is present. We understand that this electromagnetic signal, whether it is the one being sent or the one being received by the radar, is attenuated (its strength reduced) as it travels away from the radar station. Thus, the attenuation of this electromagnetic signal can be plotted as a function of time...