Contemporary Communication Systems Using

Featuring a variety of applications that motivate readers, this book serves as a companion to any of the comprehensive books in communication systems. This book provides a variety of exercises that may be solved on the computer using MATLAB? (The authors assume that the student is familiar with the fundamentals of MATLAB). By design, the treatment of the various topics is brief. The authors provide the motivation and a short introduction to each topic, establish the necessary notation, and then illustrate the basic concepts by means of an example.

1 Signals and Linear Systems

1

(44)

1.1 Preview

1

(1)

1.2 Fourier Series

1

(17)

1.2.1 Periodic Signals and LTI Systems

13

(5)

1.3 Fourier Transforms

18

(14)

1.3.1 Sampling Theorem

23

(5)

1.3.2 Frequency-Domain Analysis of LTI Systems

28

(4)

1.4 Power and Energy

32

(4)

1.5 Lowpass Equivalent of Bandpass Signals

36

(9)

2 Random Processes

45

(36)

2.1 Preview

45

(1)

2.2 Generation of Random Variables

45

(5)

2.3 Gaussian and Gauss-Markov Processes

50

(7)

2.4 Power Spectrum of Random Processes and White Processes

57

(5)

2.5 Linear Filtering of Random Processes

62

(6)

2.6 Lowpass and Bandpass Processes

68

(6)

2.7 Monte Carlo Simulation of Digital Communication Systems

74

(7)

3 Analog Modulation

81

(51)

3.1 Preview

81

(1)

3.2 Amplitude Modulation (AM)

81

(22)

3.2.1 DSB-AM

82

(9)

3.2.2 Conventional AM

91

(7)

3.2.3 SSB-AM

98

(5)

3.3 Demodulation of AM Signals

103

(16)

3.3.1 DSB-AM Demodulation

103

(6)

3.3.2 SSB-AM Demodulation

109

(5)

3.3.3 Conventional AM Demodulation

114

(5)

3.4 Angle Modulation

119

(13)

4 Analog-to-Digital Conversion

132

(41)

4.1 Preview

132

(1)

4.2 Measure of Information

132

(6)

4.2.1 Noiseless Coding

133

(5)

4.3 Quantization

138

(35)

4.3.1 Scalar Quantization

139

(9)

4.3.2 Vector Quantization

148

(7)

4.3.3 Pulse-Code Modulation

155

(1)

4.3.4 Uniform PCM

155

(18)

5 Baseband Digital Transmission

173

(53)

5.1 Preview

173

(1)

5.2 Binary Signal Transmission

173

(21)

5.2.1 Optimum Receiver for the AWGN Channel

174

(10)

5.2.2 Other Binary Signal Transmission Methods

184

(9)

5.2.3 Signal Constellation Diagrams for Binary Signals

193

(1)

5.3 Multiamplitude Signal Transmission

194

(12)

5.3.1 Signal Waveforms with Four Amplitude Levels

194

(3)

5.3.2 Optimum Receiver for the AWGN Channel

197

(6)

5.3.3 Signal Waveforms with Multiple Amplitude Levels

203

(3)

5.4 Multidimensional Signals

206

(20)

5.4.1 Multidimensional Orthogonal Signals

207

(9)

5.4.2 Biorgthogonal Signals

216

(10)

6 Digital Transmission Through Bandlimited Channels

226

(55)

6.1 Preview

226

(1)

6.2 The Power Spectrum of a Digital PAM Signal

226

(5)

6.3 Characterization of Bandlimited Channels and Channel Distortion

231

(9)

6.4 Characterization of Intersymbol Interference

240

(7)

6.5 Communication System Design for Bandlimited Channels

247

(13)

6.5.1 Signal Design for Zero ISI

247

(5)

6.5.2 Signal Design for Controlled ISI

252

(5)

6.5.3 Precoding for Detection of Partial Response Signals

257

(3)

6.6 Linear Equalizers

260

(13)

6.6.1 Adaptive Linear Equalizers

268

(5)

6.7 Nonlinear Equalizers

273

(8)

7 Digital Transmission via Carrier Modulation

281

(63)

7.1 Preview

281

(1)

7.2 Carrier-Amplitude Modulation

281

(6)

7.2.1 Demodulation of PAM Signals

284

(3)

7.3 Carrier-Phase Modulation

287

(16)

7.3.1 Phase Demodulation and Detection

290

(6)

7.3.2 Differential Phase Modulation and Demodulation

296

(7)

7.4 Quadrature Amplitude Modulation

303

(8)

7.4.1 Demodulation and Detection of QAM

304

(2)

7.4.2 Probability of Error for QAM in an AWGN Channel

306

(5)

7.5 Carrier-Frequency Modulation

311

(11)

7.5.1 Frequency-Shift Keying

311

(2)

7.5.2 Demodulation and Detection of FSK Signals

313

(5)

7.5.3 Probability of Error for Noncoherent Detection of FSK

318

(4)

7.6 Multicarrier Modulation and OFDM

322

(6)

7.7 Synchronization in Communication Systems

328

(16)

7.7.1 Carrier Synchronization

328

(6)

7.7.2 Clock Synchronization

334

(10)

8 Channel Capacity and Coding

344

(47)

8.1 Preview

344

(1)

8.2 Channel Model and Channel Capacity

344

(12)

8.2.1 Channel Model

345

(1)

8.2.2 Channel Capacity

345

(11)

8.3 Channel Coding

356

(35)

8.3.1 Linear Block Codes

358

(14)

8.3.2 Convolutional Codes

372

(19)

9 Spread Spectrum Communication Systems

391

(31)

9.1 Preview

391

(1)

9.2 Direct-Sequence Spread Spectrum Systems

392

(11)

9.2.1 Signal Demodulation

394

(2)

9.2.2 Probability of Error

396

(1)

9.2.3 Two Applications of DS Spread Spectrum Signals

397

(6)

9.3 Generation of PN Sequences

403

(6)

9.4 Frequency-Hopped Spread Spectrum

409

(13)

9.4.1 Probability of Error for FH Signals

410

(5)

9.4.2 Use of Signal Diversity to Overcome Partial-Band Interference

415

(7)

10 Simulink Tutorial on Digital Modulation Methods

422

(63)

10.1 Preview

422

(1)

10.2 Short Introduction to Simulink

423

(7)

10.2.1 Example: BPSK Transmission

423

(7)

10.3 Start the Tutorial

430

(1)

10.4 Pulse Shaping

431

(12)

10.4.1 Theory

432

(5)

10.4.2 Experiments

437

(6)

10.5 Binary Phase-Shift Keying (BPSK)

443

(14)

10.5.1 Binary Phase Shift Keying with NRZ Rectangular Pulses

445

(6)

10.5.2 Binary Phase Shift Keying with Raised-Cosine Pulses

451

(3)

10.5.3 Binary Phase Shift Keying with Square-Root Raised-Cosine Pulses

454

(3)

10.6 Quadrature Phase-Shift Keying (QPSK)

457

(9)

10.6.1 Quadrature Phase-Shift Keying with Square-Root Raised-Cosine Pulses

457

(4)

10.6.2 Phase and Frequency Offset

461

(5)

10.7 Offset-QPSK

466

(5)

10.7.1 Theory

466

(1)

10.7.2 Experiments

467

(4)

10.8 Minimum Shift Keying (MSK)

471

(6)

10.8.1 Theory

471

(1)

10.8.2 Experiments

471

(6)

10.9 16-ary Quadrature Amplitude-Shift Keying (16-QAM)

477

(8)

10.9.1 16-QAM with Square-Root Raised-Cosine Pulses

477

(4)

10.9.2 16-QAM with Raised-Cosine Pulses

481

(4)

Bibliography

485

(1)

Index

486

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Contemporary Communication Systems Using MATLAB

Summary

Table of Contents

Supplemental Materials