and error control. It also discusses the practical aspects of digital communication systems, such as wireless communication, optical communication, satellite communication, and data communication networks. The book is designed for undergraduate and postgraduate students of electronics and communication engineering, as well as for practicing engineers and researchers who want to update their knowledge and skills in digital communication.
Features of the Book
The book has the following features that make it a useful and comprehensive resource for learning digital communication:
It provides a balanced coverage of both theory and practice of digital communication, with emphasis on the physical layer aspects.
It uses a simple and lucid language to explain the concepts and methods of digital communication, with numerous examples, diagrams, tables, and figures to illustrate them.
It includes solved problems at the end of each chapter to reinforce the understanding of the topics and to prepare the students for examinations.
It contains review questions and objective-type questions at the end of each chapter to test the comprehension and application of the concepts and techniques.
It offers MATLAB programs for simulating some of the important digital communication systems and schemes.
It provides a glossary of key terms and acronyms used in digital communication.
It includes references and suggestions for further reading at the end of each chapter to enable the students to explore more on the topics of interest.
Contents of the Book
The book is divided into 12 chapters, which are organized as follows:
Chapter 1: Introduction to Digital Communication. This chapter introduces the basic concepts and terminology of digital communication, such as analog and digital signals, sampling theorem, quantization, pulse code modulation (PCM), delta modulation (DM), differential PCM (DPCM), adaptive DPCM (ADPCM), pulse amplitude modulation (PAM), pulse position modulation (PPM), pulse width modulation (PWM), pulse shape modulation (PSM), line codes, baseband transmission, bandwidth efficiency, signal-to-noise ratio (SNR), bit error rate (BER), etc.
Chapter 2: Signal Analysis. This chapter deals with the mathematical tools for analyzing signals in digital communication, such as Fourier series, Fourier transform, Laplace transform, Z-transform, convolution theorem, correlation theorem, power spectral density (PSD), autocorrelation function (ACF), cross-correlation function (CCF), etc.
Chapter 3: Modulation Techniques. This chapter explains the various techniques for modulating digital signals onto analog carriers, such as amplitude shift keying (ASK), frequency shift keying (FSK), phase shift keying (PSK), quadrature amplitude modulation (QAM), minimum shift keying (MSK), Gaussian minimum shift keying (GMSK), continuous phase modulation (CPM), etc. It also discusses the performance analysis of these techniques in terms of bandwidth efficiency, power efficiency, BER, etc.
Chapter 4: Coding Techniques. This chapter describes the various techniques for encoding digital signals to improve their reliability and security in digital communication, such as block codes, convolutional codes, Viterbi algorithm, cyclic codes, Reed-Solomon codes,
Turbo codes,
Low-density parity-check codes,
Hamming codes,
BCH codes,
Golay codes,
Fire codes,
CRC codes,
Arithmetic coding,
Huffman coding,
Lempel-Ziv coding,
Run-length coding,
etc. It also discusses the performance analysis of these techniques in terms of coding gain,
code rate,
code length,
minimum distance,
error detection capability,
error correction capability,
etc.
Chapter 5: Multiplexing Techniques. This chapter explains the various techniques for combining multiple signals into a single channel in digital communication, such as time division multiplexing (TDM),
frequency division multiplexing (FDM),
code division multiplexing (CDM),
orthogonal frequency division multiplexing (OFDM),
spread spectrum techniques,
direct sequence spread spectrum (DSSS),
frequency hopping spread spectrum (FHSS),
chirp spread spectrum (CSS),
etc. It also discusses the performance analysis of these techniques in terms of channel capacity,
interference,
synchronization,
etc.
Chapter 6: Synchronization Techniques. This chapter deals with the various techniques for achieving synchronization between the transmitter and the receiver in digital communication, such as carrier synchronization,
symbol synchronization,
frame synchronization,
etc. It also discusses the performance analysis of these techniques in terms of phase error,
timing error,
jitter,
etc.
Chapter 7: Error Control Techniques. This chapter describes the various techniques for detecting and correcting errors in digital communication, such as automatic repeat request (ARQ),
stop-and-wait ARQ,
go-back-N ARQ,
selective repeat ARQ,
hybrid ARQ,
forward error correction (FEC),
interleaving,
etc. It also discusses the performance analysis of these techniques in terms of throughput,
delay,
overhead,
etc.
Chapter 8: Wireless Communication. This chapter covers the basic principles and techniques of wireless communication, such as radio propagation models, fading, diversity, multipath, shadowing, path loss, link budget, antenna gain, antenna polarization, antenna diversity, antenna beamforming, MIMO, etc. It also discusses the various wireless communication standards and technologies, such as cellular systems, GSM, CDMA, WCDMA, LTE, Wi-Fi, WiMAX, Bluetooth, ZigBee, etc.
Chapter 9: Optical Communication. This chapter covers the basic principles and techniques of optical communication, such as optical sources, optical detectors, optical fibers, optical amplifiers, optical couplers, optical switches, optical modulators, optical demodulators, optical filters, optical multiplexers, optical demultiplexers, etc. It also discusses the various optical communication systems and networks, such as point-to-point links, passive optical networks (PONs), wavelength division multiplexing (WDM) systems, dense WDM (DWDM) systems, coarse WDM (CWDM) systems, optical add-drop multiplexers (OADMs), optical cross-connects (OXCs), etc.
Chapter 10: Satellite Communication. This chapter covers the basic principles and techniques of satellite communication, such as satellite orbits, satellite launch vehicles, satellite subsystems, satellite transponders, satellite antennas, satellite link design, satellite link budget, satellite multiple access techniques, satellite modulation techniques, satellite coding techniques, satellite error control techniques, etc. It also discusses the various satellite communication systems and applications, such as geostationary satellites (GEOs), low earth orbit satellites (LEOs), medium earth orbit satellites (MEOs), global positioning system (GPS), globalstar system Iridium system
Inmarsat system
Intelsat system
etc.
Chapter 11: Data Communication Networks. This chapter covers the basic principles and techniques of data communication networks such as network architectures
network topologies
network protocols
network layers
network devices
network interfaces
network services
network performance
etc. It also discusses the various data communication standards and technologies
such as Ethernet
token ring
FDDI
ATM
frame relay
ISDN
DSL
cable modem
TCP/IP
UDP
IP
ICMP
ARP
RARP
DHCP
DNS
FTP
HTTP
SMTP
POP3
IMAP4
Telnet
SSH
SNMP
etc.
Chapter 12: MATLAB Programs. This chapter provides MATLAB programs for simulating some of the important digital communication systems and schemes such as PCM system DPCM system DM system ASK system FSK system PSK system QAM system MSK system CPM system BPSK system QPSK system OQPSK system BFSK system M-ary PSK system M-ary FSK system M-ary QAM system block code encoder block code decoder convolutional code encoder convolutional code decoder Viterbi decoder cyclic code encoder cyclic code decoder Reed-Solomon code encoder Reed-Solomon code decoder Turbo code encoder Turbo code decoder LDPC code encoder LDPC code decoder Hamming code encoder Hamming code decoder BCH code encoder BCH code decoder Golay code encoder Golay code decoder Fire code encoder Fire code decoder CRC code encoder CRC code decoder Huffman coding Lempel-Ziv coding run-length coding TDM system FDM system CDM system OFDM system DSSS system FHSS system CSS system ARQ system FEC system interleaving wireless channel model fading model diversity model MIMO model optical fiber model WDM system OADM model OXC model satellite link model satellite multiple access model GPS model Ethernet model token ring
model FDDI
model ATM
model frame relay
model ISDN
model DSL
model cable modem
model TCP/IP
model UDP
model IP
model ICMP
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