باللغة العربية

The book "Digital Communications الإتصالات الرقمية" helps students to understand the subject by studying it in the Arabic language

Contents of the book "Digital Communications الإتصالات الرقمية", written by Salem Iseed

The following subjects of digital communications are illustrated in this book:

Analog-to-Digital Conversion
Analog Pulse Modulation
Line Codes
Pulse Shaping and Optimum Receiver
Digital Modulation
Multiplexing
Appendices

Chapter 1

Analog-to-Digital Conversion

Introduction, page-1.
Digital Transmission of Analog Signals, page-1.
Pulse Code Modulation, page-1.
Sampling Theorem, page-2.
Baseband Sampling Theorem, page-2.
Bandpass Sampling Theorem, page-8.
Instantaneous Sampling, page-14.
Natural Sampling, page-14.
Flat-Top Sampling, page-15.
Quantisation, page-16.
Uniform Quantisation, page-16.
Quantisation Noise, page-18.
PCM Bandwidth, page-23.
SNR for Decoded PCM Signal, page-25.
Nonuniform Quantisation, page-28.
Encoding, page-33.
Delta Modulation, page-36.
Slope Overload Noise, page-38.
Granular "Quantisation" Noise, page-39.
SNR in DM, page-40.
Channel Coding, page-44.
Block Codes, page-46.
Convolutional Codes, page-46.
Viterbi Algorithm, page-48.
Chapter 1 Problems, page-51.
Multichoice Problems, page-53.

chapter 2

Analog Pulse Modulation

Introduction, page-57.
Analog Pulse Modulation, page-57.
Pulse Amplitude Modulation, page-57.
Pulse Time Modulation, page-58.
Chapter 2 Problems, page-62.
Multichoice Problems, page-63.

Chapter 3

Line Codes

Introduction, page-67.
Unipolar Signaling, page-68.
Unipolar NRZ, page-68.
Unipolar RZ, page-69.
Polar Signaling, page-70.
Polar NRZ, page-70.
Polar RZ, page-71.
Bipolar or Alternate Mark Inversion, page-72.
Manchester Signaling, page-74.
Differential Encoding, page-75.
Coded Mark Inversion, page-77.
High Density Bipolar of Order n (HDBn), page-78.
Duobinary Signaling, page-80.
Quaternary System, page-81.
Chapter 3 Problems, page-83.
Multichoice Problems, page-84.

Chapter 4

Pulse Shaping and Optimum Receiver

Introduction, page-91.
Inter-Symbol Interference, page-91.
Pulse Shaping, page-92.
Raised Cosine Roll-off Filtering, page-95.
Baseband Receiver, page-99.
Optimum Filter, page-105.
Matched Filter, page-107.
Correlator, page-112.
Eye Diagram, page-116.
Chapter 4 Problems, page-118.
Multichoice Problems, page-120.

Chapter 5

Digital Modulation

Introduction, page-125.
Amplitude-Shift-Keying, page-126.
ASK Modulators, page-127.
ASK Demodulators, page-128.
Frequency-Shift Keying, page-135.
BFSK Modulators, page-137.
BFSK Demodulators, page-138.
Phase-Shift Keying, page-141.
BPSK Modulators, page-142.
BPSK Demodulators, page-143.
Differential Phase-Shift Keying, page-146.
Differentially-Encoded Phase-Shift Keying, page-148.
Quadrature PSK, page-150.
QPSK Modulators, page-151.
QPSK Demodulators, page-153.
M-ary PSK (MPSK), page-155.
Chapter 5 Problems, page-157.
Multichoice Problems, page-159.

Chapter 6

Multiplexing

Introduction, page-163.
Time Division Multiplexing, page-163.
Plesiochronous Digital Hierarchy, page-171.
T1 System, page-173.
E1 System, page-174.
Higher Multiplexing Levels of the European System, page-175.
Second Multiplexing Level E2, page-175.
Third Multiplexing Level E3, page-176.
Fourth Multiplexing Level E4, page-177.
Chapter 6 Problems, page-180.
Multichoice Problems, page-181.

Appendices


Appendix A:
Trigonometric Identities, page-183.

Appendix B:
Indefinite Integrals, page-184.

Appendix C:
Definite Integrals, page-185.

Appendix D:
Complementary Error Function, page-187.

Appendix E:
SI prefixes and important constants, page-189.

www.000webhost.com