Elétrica

Telecommunications
Communications Technologies

Pulse Modulation and Sampling
(PAM/PWM/PPM)
Courseware Sample
39862-F0

A

TELECOMMUNICATIONS
COMMUNICATIONS TECHNOLOGIES

PULSE MODULATION AND SAMPLING (PAM/PWM/PPM)

Courseware Sample

by the Staff of Lab-Volt Ltd.

Copyright © 2009 Lab-Volt Ltd.
All rights reserved. No part of this publication may be reproduced, in any form or by any means, without the prior written permission of Lab-Volt Ltd.

Printed in Canada
January 2010

Table of Contents
Foreword
Courseware Outline
Pulse Modulation and Sampling (PAM / PWM / PPM)

Sample Exercise Extracted from Pulse Modulation and Sampling (PAM / PWM /
PPM)
Exercise 2-1

PAM Signals

Other Sample Extracted from Pulse Modulation and Sampling (PAM / PWM /
PPM)
Unit Test 2

Pulse Amplitude Modulation (PAM)

Instructor Guide Sample Exercise Extracted from Pulse Modulation and
Sampling (PAM / PWM / PPM)
Exercise 2-1

PAM Signals

Bibliography

III

IV

Foreword
Digital communication offers so many advantages over analog communication that the majority of today's communications systems are digital.
Unlike analog communication systems, digital systems do not require accurate recovery of the transmitted waveform at the receiver end. Instead, the receiver periodically detects which waveform is being transmitted, among a limited number of possible waveforms, and maps the detected waveform back to the data it represents. This allows extremely low error rates, even when the signal has been corrupted by noise.
The digital circuits are often implemented using application specific integrated circuits (ASIC) and field-programmable gate arrays (FPGA). Although this
"system-on-a-chip" approach is very effective for commercial and military applications, the resulting systems do not allow access to internal signals and data and are therefore poorly suited for educational use. It is for this reason that Lab-Volt