Digital Modulation Techniques (Artech House Telecommunications Library)

Explains the full range of today's digital modulation techniques and their practical application to conventional, fixed microwave terrestrial communications, satellite communications, mobile wireless, mobile satellite, and fiber-optic communications. DLC: Digital modulation. Digital Modulation Techniques......Page 1 Copyright......Page 5 Contents......Page 6 Preface......Page 14 Acknowledgments......Page 16 1.1 Digital Communication Systems......Page 17 1.2.1 Additive White Gaussian Noise Channel......Page 20 1.2.2 Bandlimited Channel......Page 22 1.3 Basic Modulation Methods......Page 23 1.4 Criteria of Choosing Modulation Schemes......Page 25 1 4.2 Bandwidth Efficiency......Page 26 1.4.3 System Complexity......Page 27 1.5 Overview of Digital Modulation Schemes......Page 28 References......Page 31 Selected Bibliography......Page 32 Ch2 Baseband Modulation (Line Codes)......Page 33 2.1 Differential Coding......Page 34 2.2 Description of Line Codes......Page 38 2.2.2 Return-to-Zero Codes......Page 41 2.2.3 Pseudoternary Codes (including AMI)......Page 42 2.2.5 Delay Modulation (Miller Code)......Page 43 2.3 Power Spectral Density of Line Codes......Page 44 2.3.1 PSD of Nonreturn-to-Zero Codes......Page 46 2.3.2 PSD of Return-to-Zero Codes......Page 50 2.3.3 PSD of Pseudoternary Codes......Page 51 2.3.4 PSD of Biphase Codes......Page 53 2.3.5 PSD of Delay Modulation......Page 56 2.4 Bit Error Rate of Line Codes......Page 59 2.4.1 BER of Binary Codes......Page 60 2.4.1.1 BER of Nonreturn-to-Zero Codes......Page 62 2.4.1.2 BER of Return-to-Zero Codes......Page 64 2.4.2 BER of Pseudoternary Codes......Page 65 2.4.3 BER of Biphase Codes......Page 70 2.5 Substitution Line Codes......Page 73 2.5.1 Binary N-Zero Substitution Codes......Page 74 2.5.2 High Density Bipolar n Codes......Page 76 2.6 Block Line Codes......Page 78 2.6.1 Coded Mark Inversion Codes......Page 79 2.6.2 Differential Mode Inversion Codes......Page 85 2.6.3.1 Carter Code......Page 87 2.6.3.2 Grifiths Code......Page 88 2.6.3.3 PAM-PPM Code......Page 89 2.6.4 mB1C Codes......Page 90 2.6.5 DmB1M Codes......Page 92 2.6.6 PFmB(m+1)B Codes......Page 93 2.6.7 kBnT Codes......Page 94 2.6.7.1 4B3T Code......Page 95 2.6.7.3 6B4T Code......Page 96 2.7 Summary......Page 97 References......Page 99 Selected Bibliography......Page 101 3.1.1 Binary FSK Signal & Modulator......Page 103 3.1.2 Power Spectral Density......Page 108 3.2 Coherent Demodulation & Error Performance......Page 111 3.3 Noncoherent Demodulation & Error Performance......Page 114 3.4.1 MFSK Signal & Power Spectral Density......Page 118 3.4.2 Modulator, Demodulator & Error Performance......Page 120 3.5 Demodulation using Discriminator......Page 131 3.7 Summary......Page 137 Selected Bibliography......Page 138 4.1 Binary PSK......Page 139 4.2 Differential BPSK......Page 145 4.3 M-ary PSK......Page 152 4.4 PSD of MPSK......Page 162 4.5 Differential MPSK......Page 164 4.6 Quadrature PSK......Page 170 4.7 Differential QPSK......Page 176 4.8 Offset QPSK......Page 183 4.9 pi/4-QPSK......Page 186 4.10.1 Carrier Recovery......Page 195 4.10.2 Clock Recovery......Page 199 4.10.3 Effects of Phase & Timing Error......Page 202 4.11 Summary......Page 203 4.12 Appendix 4A......Page 206 References......Page 208 Selected Bibliography......Page 209 Ch5 Minimum Shift Keying & MSK-Type Modulations......Page 211 5.1.1 MSK Viewed as Sinusoidal Weighted OQPSK......Page 212 5.1.2 MSK Viewed as Special Case of CPFSK......Page 217 5.2.1 Power Spectral Density of MSK......Page 219 5.2.2 Bandwidth of MSK & Comparison with PSK Schemes......Page 220 5.3 Modulator......Page 223 5.4 Demodulator......Page 226 5.5 Synchronization......Page 230 5.6 Error Probability......Page 232 5.7.1 SMSK Description......Page 235 5.7.2 SMSK Modulator......Page 237 5.7.3 SMSK Demodulator......Page 239 5.7.4 Conversion & Matched Filter lmplementation......Page 243 5.8 MSK-Type Modulation Schemes......Page 247 5.9 Sinusoidal Frequency Shift Keying......Page 252 5.10 Simon's Class of Symbol-Shaping Pulses......Page 256 5.11 Rabzel & Pasupathy's Symbol-Shaping Pulses......Page 263 5.12 Bazin's Class of Symbol-Shaping Pulses......Page 266 5.13 MSK-Type Signal's Spectral Main Lobe......Page 270 5.14 Summary......Page 272 References......Page 273 Selected Bibliography......Page 274 Ch6 Continuous Phase Modulation......Page 275 6.1 Description of CPM......Page 276 6.1.1.1 Rectangular (LREC), CPFSK & MSK......Page 277 6.1.1.3 Spectrally Raised Cosine (LSRC)......Page 278 6.1.1.5 Gaussian MSK (GMSK)......Page 279 6.1.2 Phase & State of CPM Signal......Page 281 6.1.3 Phase Tree & Trellis, State Trellis......Page 285 6.2 Power Spectral Density......Page 288 6.2.1 Steps for Calculating PSDs for General CPM Signals......Page 290 6.2.2 Effects of Pulse Shape, Modulation Index & A Priori Distribution......Page 292 6.2.3 PSD of CPFSK......Page 293 6.3 MLSD for CPM & Error Probability......Page 295 6.3.1 Error Probability & Euclidean Distance......Page 297 6.3.2 Comparison of Minimum Distances......Page 301 6.4.1 Quadrature Modulator......Page 302 6.4.2.1 PLL Modulator......Page 308 6.4.2.2 BPF-Limiter Modulator......Page 310 6.4.3 All-Digital Modulator......Page 311 6.5.1 Optimum ML Coherent Demodulator......Page 313 6.5.2 Optimum ML Noncoherent Demodulator......Page 317 6.5.3 Viterbi Demodulator......Page 327 6.5.4 Reduced-Complexity Viterbi Demodulator......Page 333 6.5.5 Reduction of Number of Filters for LREC CPM......Page 336 6.5.6 ML Block Detection of Noncoherent CPM......Page 341 6.5.7 MSK-Type Demodulator......Page 342 6.5.8 Differential & Discriminator Demodulator......Page 346 6.5.9 Other Types of Demodulators......Page 349 6.6.1 MSK-Type Synchronizer......Page 353 6.6.2 Squaring Loop & Fourth-Power Loop Synchronizers......Page 356 6.6.3 Other Types of Synchronizer......Page 357 6.7 Gaussian Minimum Shift Keying (GMSK)......Page 358 6.8 Summary......Page 362 References......Page 363 7.1 MHPM Signal, Phase Tree & Trellis......Page 367 7.2 Power Spectral Density......Page 377 7.3 Distance Properties & Error Probability......Page 382 7.5.1 Simple ML Demodulator for Multi-h Binary CPFSK......Page 398 7.5.2 Joint Demodulation & Carrier Synchronization of Multi-h CPFSK......Page 404 7.5.3 Joint Carrier Phase Tracking & Data Detection of Multi-h CPFSK......Page 408 7.5.4 Joint Demodulation, Carrier Synchronization & Symbol Synchronization of M-ary Multi-h CPFSK......Page 409 7.5.5 Synchronization of MHPM......Page 414 7.6 Improved MHPM Schemes......Page 415 7.6.1 MHPM with Asymmetrical Modulation Indexes......Page 416 7.6.3 Correlatively Encoded Multi-h Signaling Technique......Page 417 7.7 Summary......Page 419 7.8 Appendix 7A......Page 420 References......Page 424 Selected Bibliography......Page 426 8.1 M-ary Amplitude Modulation......Page 427 8.1.1 Power Spectral Density......Page 428 8.1.2 Optimum Detection & Error Probability......Page 430 8.1.3 Modulator & Demodulator for Bandpass MAM......Page 434 8.1.4 On-Off Keying......Page 437 8.2 QAM Signal Description......Page 438 8.3 QAM Constellations......Page 442 8.3.1 Square QAM......Page 445 8.4 Power Spectral Density......Page 448 8.5 Modulator......Page 450 8.6 Demodulator......Page 452 8.7 Error Probability......Page 454 8.8 Synchronization......Page 457 8.9 Differential Coding in QAM......Page 464 8.10 Summary......Page 470 8.11 Appendix 8A......Page 471 References......Page 473 Selected Bibliography......Page 474 Ch9 Nonconstant-Envelope Bandwidth-Efficient Modulations......Page 475 9.1 Two-Symbol-Period Schemes & Optimum Demodulator......Page 476 9.2 Quasi-Bandlimited Modulation......Page 481 9.3 QORC, SQORC & QOSRC......Page 487 9.4 IJF-OQPSK & TSI-OQPSK......Page 494 9.5 Superposed-QAM......Page 506 9.6 Quadrature Quadrature PSK......Page 514 References......Page 531 Ch10 Performance of Modulations in Fading Channels......Page 533 10.1.1 Channel Characteristics......Page 534 10.1.2 Channel Classification......Page 537 10.1.3 Fading Envelope Distributions......Page 540 10.2.1 Rayleigh Fading Channel......Page 543 10.2.2 Rician Fading Channel......Page 547 10.3 Digital Modulation in Frequency Selective Channels......Page 549 10.4 pi/4-DQPSK in Fading Channels......Page 560 10.5 MHPM in Fading Channels......Page 564 10.6 QAM in Fading Channels......Page 570 10.6.1 Square QAM......Page 571 10.6.2 Star QAM......Page 574 10.7 Remedial Measures against Fading......Page 576 10.8 Summary......Page 579 References......Page 580 Selected Bibliography......Page 582 A.1 Bandpass Signals & Spectra......Page 583 A.2 Bandpass Stationary Random Process & PSD......Page 585 A.3 Power Spectral Densities of Digital Signals......Page 588 A.3.1 Case 1: Data Symbols are Uncorrelated......Page 590 A.3.2 Case 2: Data Symbols are Correlated......Page 592 A.4 Power Spectral Densities of Digital Bandpass Signals......Page 593 A.5 Power Spectral Densities of CPM Signals......Page 596 References......Page 602 B.1.1 Binary Hypothesis Test......Page 605 B.1.2.1 Bayes Criterion......Page 606 B.1.2.2 Minimum Probability of Error Criterion......Page 608 B.1.2.3 Maximum A Posteriori Probability Criterion (MAP)......Page 609 B.1.3 M Hypotheses......Page 610 B.2.1.1 Receiver Structure......Page 612 B.2.1.2 Matched Filter Maximizes Signal-to-Noise Ratio......Page 618 B.2.1.3 Error Probability......Page 619 B.2.2.1 Receiver Structure......Page 624 8.2.2.2 Error Probability......Page 629 B.3.1 Receiver Structure......Page 631 B.3.2.1 Binary Orthogonal Signals......Page 637 B.3.2.2 M-ary Orthogonal Signals......Page 640 References......Page 641 Glossary......Page 643 About the Author......Page 647 Index......Page 649 Backcover......Page 686

from Traditional Techniques Such As Fsk, Bpsk, Qpsk, And Qam To State-of-the-art Techniques Such As Msk, Cpm, And Mhpm And More, This New Book Is The First To Cover The Complete Range Of Digital Modulation Methods In One Handy Source. You Develop An Understanding Of More Than Just Modulation Technique Principles, But Practical Applications As Well.

This Single Volume Covers The Historical Background Of Digital Modulation, And Examines Operation Principles, Symbol And Bit Error Performance, And Spectral Characteristics. It Also Includes Block Diagrams And/or Circuits Of Modulators, Demodulators, Carrier Recovery, Clock Recovery And Comparison With Other Schemes. And In Its Comprehensive Overview Of Digital Modulation Applications, This Book Provides You A Practical Understanding Of Conventional, Fixed Microwave Terrestrial Communications, Satellite Communications, Mobile Wireless, And Mobile Satellite Communications.

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explains The Full Range Of Digital Modulation Techniques And Their Practical Application To Conventional, Fixed Microwave Terrestrial Communications, Satellite Communications, Mobile Wireless, Mobile Satellite, And Fiber-optic Communications. After A Brief Review Of The History Of Digital Modulation, Chapters Delve Into Operation Principles, Symbol And Bit Error Performance, And Spectral Characteristics. Includes Detailed Explanations Of Block Diagrams And Circuits Of Modulators And Demodulators, And Comparison With Other Schemes. The Author Is Associate Professor In Electrical And Computer Engineering At Cleveland State University. Annotation C. Book News, Inc., Portland, Or (booknews.com)

From traditional techniques such as FSK, BPSK, QPSK and QAM to state-of-the-art techniques such as MSK, CPM and MHPM and more, this text covers the complete range of digital modulation methods. It discusses the historical background of digital modulation, and examines operation principles, symbol and bit error performance, and spectral characteristics. It also includes block diagrams and/or circuits of modulators, demodulators, carrier recovery, clock recovery and comparison with other schemes. In its comprehensive overview of digital modulation applications, it seeks to offer a practical understanding of conventional, fixed microwave terrestrial communications, mobile wireless, and mobile satellite communications.