Communication Systems

Size: px

Start display at page:

Download "Communication Systems"

Erin Wilcox
5 years ago
Views:

1 Electronics Engineering Communication Systems Comprehensive Theory with Solved Examples and Practice Questions Publications

2 Publications MADE EASY Publications Corporate Office: 44-A/4, Kalu Sarai (Near Hauz Khas Metro Station), New Delhi Contact: , Visit us at: Communication Systems Copyright, by MADE EASY Publications. All rights are reserved. No part of this publication may be reproduced, stored in or introduced into a retrieval system, or transmitted in any form or by any means (electronic, mechanical, photo-copying, recording or otherwise), without the prior written permission of the above mentioned publisher of this book. First Edition: 2015 Second Edition: 2016 Third Edition: 2017 Fourth Edition: 2018 All rights reserved by MADE EASY PUBLICATIONS. No part of this book may be reproduced or utilized in any form without the written permission from the publisher.

3 Contents Communication Systems Chapter 1 Introduction to Communication... 1 Systems 1.1 Historical Sketch Why Study Communication What is Communication Communication Model Modes of Communication Types of Modulation An Exam Oriented Approach... 5 Chapter 2 Basics of Signal and System Signal and System Time Domain and Frequency Domain Representation of a Signal Signals Versus Vectors Orthogonal Signal Set The Fourier Series Fourier Transforms of Signals Summary of Fourier Transform Operations Correlation of Signals Transmission of Signals through...28 Linear Time-Invariant Systems 2.10 Ideal Filters Hilbert Transform Pre-envelopes Complex Envelopes of Band-Pass Signals Canonical Representation of...36 Band-Pass Signals 2.15 Complex Low-Pass Representations...37 of Band-Pass Systems Student Assignments Student Assignments Chapter 3 Theory of Random Variable & Noise Randomness in the Real World Random Experiments Relation of the Model to the Real World Conditional Probability Statistical Independence A Communication Problem Events Generated by Random Variables Distribution and Density Functions...45 (iii)

4 3.9 Some Special Random Variables Two Dimensional Random Variables Mean and Variance Transformation of Variables Stochastic Processes Ergodic Processes Transmission of a Weakly Stationary...61 Process through a Linear Time-Invariant Filter 3.16 Power Spectral Density of a Weakly...62 Stationary Process 3.17 Noise Noise Calculations Noise Figure Ideal Low-pass Filtered White Noise Narrowband Noise...76 Student Assignments Student Assignments Chapter 4 Amplitude Modulation Amplitude Modulation Single Tone Amplitude Modulation Power Relations in AM Modulation by a Multiple Single Tone Signals Generation of AM Waves using...90 Nonlinear Property 4.6 Double-Sideband Suppressed-Carrier...94 Modulation 4.7 Single Side-Band Vestigial Side-band Modulation (VSB) Independent Single Sideband (ISB) Student Assignments Student Assignments Chapter 5 Angle Modulation Time Domain Description of Angle Modulation 5.2 Single-Tone Frequency Modulation Spectrum Analysis of Sinusoidal FM wave Types of Frequency Modulation (FM) Generation of Frequency Modulation Waves Demodulation of Frequency Modulation Waves 5.7 Phase-Locked Loop Limiting of FM Waves Student Assignments Student Assignments Chapter 6 AM Transmitters and Receivers Transmitter Receivers Noise Figure of the Receiver Noise Performance of Continuous Wave Modulation 6.5 Figure of Merit Student Assignments Student Assignments (iv)

5 Chapter 7 Pulse Modulation Analog Communication Versus Digital Communication 7.2 Sampling Theory Pulse Amplitude Modulation Pulse Width Modulation Pulse Position Modulation PCM (Pulse Code Modulation) Companding Mathematical Analysis of PCM Noise in PCM Encoding in PCM Intersymbol Interference Merits and Demerits of PCM Delta Modulation Adaptive Delta Modulation (ADM) Differential Pulse Code Modulation Multiplexing Student Assignments Student Assignments Chapter 8 Data Transmission Schemes Geometric Representation of Signal Schwarz Inequality Digital Modulation Schemes Amplitude Shift Keying (ASK) Frequency Shift Keying (FSK) Phase Shift Keying Quadri Phase Shift Keying Quadrature Amplitude Modulation Differential Phase Shift Keying (DPSK) Minimum shift keying(msk) Student Assignments Student Assignments Chapter 9 Optimum Receivers for AWGN Channels Detection of Signal in Noise Optimum Detection in a Binary Communication System Using MAP Criteria 9.3 Probability of Error Matched Filter Generalized Probability of Error Expression of Digital Signalling Schemes 9.6 Probability of Error for Binary Signalling Schemes 9.7 Probability of Error in PSK Probability of Error in FSK Probability of Error of QPSK Calculation of Probability of Error Using Constellation Diagram 9.11 Probability of Error for 16-QAM Student Assignments Student Assignments (v)

6 Chapter 10 Information Theory and Coding Need of Information Theory Information Entropy Discrete Memoryless Channels Special Channels Mutual Information Channel Capacity Additive White Gaussian Noise Channel (AWGN) 10.9 Source Coding Chapter 11 Multiple Access Technique and Communication Standards Multiple Access Technique Frequency Division Multiple Access (FDMA) Time Division Multiple Access (TDMA) Code Division Multiple Access (CDMA) Standards of Mobile Communication System Global System for Mobile Communications Bluetooth Entropy Coding Entropy of Continuous Channel Channel Coding Theorem Error Control Coding Linear Code Student Assignments Student Assignments (vi)

Communication Systems

Electrical Engineering Communication Systems Comprehensive Theory with Solved Examples and Practice Questions Publications Publications MADE EASY Publications Corporate Office: 44-A/4, Kalu Sarai (Near