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E-raamat: Principles of Spread-Spectrum Communication Systems

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  • Ilmumisaeg: 23-Apr-2015
  • Kirjastus: Springer International Publishing AG
  • Keel: eng
  • ISBN-13: 9783319140964
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  • Formaat: PDF+DRM
  • Ilmumisaeg: 23-Apr-2015
  • Kirjastus: Springer International Publishing AG
  • Keel: eng
  • ISBN-13: 9783319140964
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This textbook provides a concise but lucid explanation of the fundamentals of spread-spectrum systems with an emphasis on theoretical principles. The choice of specific topics is tempered by the author’s judgment of their practical significance and interest to both researchers and system designers. Throughout the book, learning is facilitated by many new or streamlined derivations of the classical theory. Problems at the end of each chapter are intended to assist readers in consolidating their knowledge and to provide practice in analytical techniques. This third edition includes new coverage of topics such as CDMA networks, Acquisition and Synchronization in DS-CDMA Cellular Networks, Hopsets for FH-CDMA Ad Hoc Networks, and Implications of Information Theory, as well as updated and revised material on Central Limit Theorem, Power Spectral Density of FH/CPM Complex Envelopes, and Anticipative Adaptive-Array Algorithm for Frequency-Hopping Systems.
1 Channel Codes and Modulation 1(78)
1.1 Block Codes
1(27)
Error Probabilities for Hard-Decision Decoders
6(6)
Soft-Decision Decoders and Code Metrics for Pulse Amplitude Modulation
12(8)
Code Metrics for Orthogonal Signals
20(4)
Detection of Uncoded FSK Symbols
24(2)
Performance Examples
26(2)
1.2 Convolutional Codes and Trellis Codes
28(16)
Chernoff Bound
40(2)
Trellis-Coded Modulation
42(2)
1.3 Interleavers
44(2)
1.4 Classical Concatenated Codes
46(2)
1.5 Turbo Codes
48(13)
MAP Decoding Algorithm
48(4)
Turbo Codes with Parallel Concatenated Codes
52(7)
Serially Concatenated Turbo Codes
59(2)
1.6 Iterative Demodulation and Decoding
61(8)
Bit-Interleaved Coded Modulation
65(1)
Simulation Examples
65(4)
1.7 Low-Density Parity-Check Codes
69(8)
Irregular Repeat-Accumulate Codes
74(2)
LDPC Performance
76(1)
1.8 Problems
77(2)
2 Direct-Sequence Systems 79(68)
2.1 Definitions and Concepts
79(4)
2.2 Spreading Sequences and Waveforms
83(20)
Random Binary Sequence
83(2)
Shift-Register Sequences
85(4)
Maximal Sequences
89(1)
Autocorrelations and Power Spectra
90(4)
Characteristic Polynomials
94(4)
Long Nonlinear Sequences
98(4)
Chip Waveforms
102(1)
Partial Correlation of Sequences
102(1)
2.3 Systems with BPSK Modulation
103(11)
Tone Interference at Carrier Frequency
107(2)
General Tone Interference
109(2)
Gaussian Interference
111(3)
2.4 Quaternary Systems
114(8)
Complex Binary Spreading Sequences
120(2)
Systems with Channel Codes
122(1)
2.5 Pulsed Interference
122(9)
2.6 Noncoherent Systems
131(4)
2.7 Despreading with Bandpass Matched Filters
135(9)
Surface-Acoustic-Wave Filters
138(3)
Multipath-Resistant Coherent System
141(3)
2.8 Problems
144(3)
3 Frequency-Hopping Systems 147(56)
3.1 Concepts and Characteristics
147(5)
3.2 Frequency Hopping with Orthogonal FSK
152(7)
Illustrative System
152(6)
Multitone Jamming
158(1)
3.3 Frequency Hopping with CPM and DPSK
159(10)
FH/CPM
160(7)
FH/DPSK
167(2)
3.4 Power Spectral Density of FH/CPM
169(4)
3.5 Digital Demodulation of Dehopped FH/CPFSK
173(4)
3.6 Codes for Partial-Band Interference
177(10)
Reed-Solomon Codes
178(7)
Trellis-Coded Modulation
185(1)
Turbo and LDPC Codes
185(2)
3.7 Hybrid Systems
187(2)
3.8 Frequency Synthesizers
189(11)
Direct Frequency Synthesizer
189(2)
Direct Digital Synthesizer
191(3)
Indirect Frequency Synthesizers
194(6)
3.9 Problems
200(3)
4 Code Synchronization 203(56)
4.1 Acquisition of Spreading Sequences
203(7)
Matched-Filter Acquisition
207(2)
Sequential Estimation
209(1)
4.2 Serial-Search Acquisition
210(18)
Uniform Search with Uniform Distribution
214(2)
Consecutive-Count Double-Dwell System
216(1)
Single-Dwell and Matched-Filter Systems
217(1)
Up-Down Double-Dwell System
218(2)
Penalty Time
220(1)
Other Search Strategies
221(2)
Density Function of the Acquisition Time
223(1)
Alternative Analysis
224(4)
4.3 Acquisition Correlator
228(7)
4.4 Sequential Acquisition
235(2)
4.5 Code Tracking
237(5)
4.6 Frequency-Hopping Patterns
242(14)
Matched-Filter Acquisition
242(7)
Serial-Search Acquisition
249(5)
Pattern Tracking
254(2)
4.7 Problems
256(3)
5 Adaptive Filters and Arrays 259(58)
5.1 Real and Complex Gradients
259(3)
Real Gradients
259(1)
Complex Gradients
260(2)
5.2 Adaptive Filters
262(7)
Optimal Weight Vector
262(2)
Cauchy—Schwarz Inequality
264(1)
Method of Steepest Descent
264(1)
LMS Algorithm
265(4)
5.3 Rejection of Narrowband Interference
269(14)
Time-Domain Adaptive Filtering
270(3)
Transform-Domain Processing
273(2)
Nonlinear Filtering
275(6)
Adaptive ACM filter
281(2)
5.4 Rejection of Wideband Interference
283(6)
Lagrange Multipliers
283(1)
Constrained Minimum-Power Criterion
284(2)
Frost Algorithm
286(3)
5.5 Optimal Array
289(4)
5.6 Adaptive Array for Direct-Sequence Systems
293(12)
Derivation of Maximin Algorithm
293(3)
Implementation of Processor
296(5)
Convergence Analysis
301(2)
Simulation of Maximin Algorithm
303(2)
5.7 Adaptive Array for Frequency-Hopping Systems
305(9)
Initial and Main Processors
307(3)
Anticipative Adaptive Filters
310(2)
Simulation Experiments
312(2)
5.8 Problems
314(3)
6 Fading and Diversity 317(88)
6.1 Path Loss, Shadowing, and Fading
317(3)
6.2 Time-Selective Fading
320(10)
Fading Rate and Fade Duration
327(1)
Spatial Diversity and Fading
328(2)
6.3 Frequency-Selective Fading
330(4)
Channel Impulse Response
332(2)
6.4 Diversity for Fading Channels
334(28)
Maximal-Ratio Combining
334(2)
Coherent Demodulation and Metrics
336(10)
Equal-Gain Combining
346(7)
Selection Diversity
353(5)
Transmit Diversity
358(4)
6.5 Channel Codes
362(8)
Bit-Interleaved Coded Modulation
368(2)
6.6 Rake Demodulator
370(8)
6.7 Frequency Hopping and Diversity
378(1)
6.8 Multicarrier Direct-Sequence Systems
379(24)
Multicarrier CDMA System
383(15)
DS-CDMA System with Frequency-Domain Equalization
398(5)
6.9 Problems
403(2)
7 Code-Division Multiple Access 405(56)
7.1 Implications of Information Theory
405(4)
7.2 Spreading Sequences for DS-CDMA
409(14)
Synchronous Communications
411(3)
Asynchronous Communications
414(5)
Symbol Error Probability
419(2)
Complex Quaternary Sequences
421(2)
7.3 Systems with Random Spreading Sequences
423(14)
Jensen's Inequality
423(2)
Direct-Sequence Systems with BPSK
425(8)
Quadriphase Direct-Sequence Systems
433(4)
7.4 Frequency-Hopping Patterns for FH-CDMA
437(4)
7.5 Multiuser Detectors
441(18)
Optimum Detectors
442(3)
Conventional Single-User Detector
445(1)
Decorrelating Detector
446(4)
Minimum-Mean-Square-Error Detector
450(3)
Adaptive Multiuser Detection
453(1)
Interference Cancelers
454(4)
Multiuser Detector for Frequency Hopping
458(1)
7.6 Problems
459(2)
8 Mobile Ad Hoc and Cellular Networks 461(58)
8.1 Conditional Outage Probability
461(9)
Examples
468(2)
8.2 DS-CDMA Mobile Ad Hoc Networks
470(11)
Guard Zones
475(3)
Examples
478(3)
8.3 DS-CDMA Cellular Networks
481(10)
Acquisition and Synchronization
482(3)
Power Control
485(3)
Adaptive Rate Control
488(1)
Spatial Distributions and Network Models
488(3)
8.4 DS-CDMA Uplinks
491(8)
Uplink Power Control
493(1)
Uplink Rate Control
494(3)
Performance Examples
497(2)
8.5 DS-CDMA Downlinks
499(8)
Downlink Rate Control
503(1)
Downlink Power Control
504(1)
Performance Analysis
504(3)
8.6 FH-CDMA Mobile Ad Hoc Networks
507(7)
Conditional Outage Probability
509(1)
Rate Adaptation
510(1)
Modulation-Constrained Area Spectral Efficiency
510(1)
Optimization Algorithm
511(3)
8.7 FH-CDMA Cellular Networks
514(3)
8.8 Problems
517(2)
9 Iterative Channel Estimation, Demodulation, and Decoding 519(46)
9.1 Expectation-Maximization Algorithm
519(7)
Fixed-Point Iteration
524(2)
9.2 Direct-Sequence Systems
526(16)
Encoding, Modulation, and Channel Estimation
526(1)
Iterative Receiver Structure
527(2)
EM Algorithm
529(4)
Perfect Phase Information at Receiver
533(1)
No Phase Information at Receiver
534(1)
Blind-PACE Estimation Tradeoffs
534(1)
Simulation Results
534(8)
9.3 Guidance from Information Theory
542(2)
9.4 Robust Frequency-Hopping Systems
544(18)
System Model
546(1)
Demodulator Metrics
546(4)
Channel Estimators
550(2)
Selection of Modulation Index
552(2)
Partial-Band Interference
554(4)
Asynchronous Multiple-Access Interference
558(4)
9.5 Problems
562(3)
10 Detection of Spread-Spectrum Signals 565(30)
10.1 Detection of Direct-Sequence Signals
565(4)
10.2 Radiometer
569(15)
Rayleigh Fading
575(2)
Estimation of Noise Power
577(3)
Other Implementation Issues
580(4)
10.3 Detection of Frequency-Hopping Signals
584(4)
10.4 Channelized Radiometer
588(6)
10.5 Problems
594(1)
Appendix A: Gaussian Random Variables and Processes 595(10)
A.1 General Characteristics
595(4)
A.2 Central Limit Theorem
599(6)
Appendix B: Special Functions 605(4)
B.1 Gamma Functions
605(1)
B.2 Beta Function
606(1)
B.3 Bessel Functions of the First Kind
606(1)
B.4 Q-function
607(1)
B.5 Marcum Q-function
607(1)
B.6 Hypergeometric Function
608(1)
Appendix C: Signal Characteristics 609(12)
C.1 Bandpass Signals
609(3)
C.2 Stationary Stochastic Processes
612(4)
C.3 Direct-Conversion Downconverter
616(2)
C.4 Sampling Theorem
618(3)
Appendix D: Probability Distributions 621(8)
D.1 Chi-Square Distribution
621(2)
D.2 Central Chi-Square Distribution
623(1)
D.3 Rice Distribution
623(2)
D.4 Rayleigh Distribution
625(1)
D.5 Exponential and Gamma Distributions
626(3)
References 629(6)
Index 635
Don Torrieri, PhD, leading Army researcher with the US Army Research Laboratory in Maryland