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Introduction to Wireless Systems

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Prefacep. xiii
Acknowledgmentsp. xv
About the Authorsp. xvii
Introductionp. 1
Overviewp. 1
System Descriptionp. 4
What Is a Wireless System?p. 4
General Architecture, Basic Concepts, and Terminologyp. 6
Historical Perspectivep. 10
Systems Engineering and the Role of the Systems Engineerp. 12
Problem Statementp. 16
The Radio Linkp. 17
Introductionp. 17
Transmitting and Receiving Electromagnetic Wavesp. 18
Isotropic Radiationp. 20
Antenna Radiation Patternsp. 22
The Range Equationp. 28
Thermal Noise and Receiver Analysisp. 34
Characterizing Noise Sourcesp. 35
Characterizing Two-Portsp. 47
Optimizing the Energy Transmission Systemp. 61
System-Level Designp. 61
Receiver Sensitivityp. 62
Top-Level Designp. 63
An Example Link Budgetp. 66
Conclusionsp. 70
Problemsp. 70
Channel Characteristicsp. 77
Introductionp. 77
Reflection from the Earth's Surfacep. 79
Empirical Modelsp. 86
The Hata Modelp. 87
The Lee Modelp. 90
Log-Normal Shadowingp. 95
Multipath Propagation and Fadingp. 100
Introductionp. 100
A Two-Ray Model for Multipath Propagation: Stationary Receiverp. 102
Statistical Models for Multipath Propagationp. 106
Rayleigh Fadingp. 106
Coherence Bandwidthp. 115
A Two-Ray Model with a Moving Receiverp. 121
A Statistical Model with a Moving Receiverp. 129
Area Coveragep. 132
The Link Budgetp. 137
Conclusionsp. 139
Problemsp. 141
Radio Frequency Coverage: Systems Engineering and Designp. 149
Motivationp. 149
Requirements Assessment and System Architecturep. 150
Cellular Conceptsp. 153
Estimation of Interference Levelsp. 167
Cochannel Interferencep. 167
Adjacent-Channel Interferencep. 171
Cellular System Planning and Engineeringp. 173
The Key Trade-offsp. 173
Sectoringp. 175
Cell Splittingp. 179
Operational Considerationsp. 183
The Mobile Switching Centerp. 184
Dynamic Channel Assignmentp. 185
Handoff Concepts and Considerationsp. 185
Traffic Engineering, Trunking, and Grade of Servicep. 187
Conclusionsp. 194
Problemsp. 196
Digital Signaling Principlesp. 203
Introductionp. 203
Baseband Digital Signalingp. 204
Baseband Digital Communication Architecturep. 204
Baseband Pulse Detectionp. 207
The Matched Filterp. 212
Correlationp. 216
Correlation Receiverp. 220
Receiver Performancep. 222
Carrier-Based Signalingp. 226
Modulation Overviewp. 226
Modulated Carrier Communication Architecturep. 227
Digital Modulation Principlesp. 229
Binary Phase-Shift Keying (BPSK)p. 236
Differential Binary Phase-Shift Keying (DPSK)p. 239
Quadrature Phase-Shift Keying (QPSK)p. 243
Offset QPSK (OQPSK)p. 251
Frequency-Shift Keying (FSK)p. 254
Gaussian Frequency-Shift Keying (GFSK)p. 262
Minimum-Shift Keying (MSK)p. 264
Spread-Spectrum Signalingp. 267
Overviewp. 267
Frequency-Hopping Spread Spectrump. 268
Direct-Sequence Spread Spectrump. 271
Conclusionsp. 278
Problemsp. 280
Access Methodsp. 287
Introductionp. 287
Channel Access in Cellular Systemsp. 290
Frequency-Division Multiple Accessp. 295
The AM Broadcasting Bandp. 296
The AMPS Cellular Telephone Systemp. 297
Effect of Transmitted Signal Designp. 298
Frequency-Division Duplexingp. 299
Time-Division Multiple Accessp. 300
The U.S. Digital Cellular (USDC) Systemp. 302
The GSM Systemp. 304
Time-Division Duplexingp. 305
Code-Division Multiple Accessp. 306
Frequency-Hopping CDMA Systemsp. 307
Direct-Sequence CDMA Systemsp. 311
Contention-Based Multiple Accessp. 325
The Aloha Multiple-Access Protocolp. 326
The Slotted Aloha Protocolp. 328
Carrier-Sense Multiple Accessp. 330
Conclusionsp. 335
Problemsp. 337
Information Sourcesp. 343
Introductionp. 343
Information Sources and Their Characterizationp. 346
Speechp. 347
Musicp. 348
Imagesp. 349
Videop. 350
Datap. 351
Quality of Service (QoS)p. 352
Smooth versus Chunkyp. 354
Digitization of Speech Signalsp. 355
Pulse Code Modulationp. 356
Differential PCMp. 367
Vocodersp. 371
Coding for Error Correctionp. 376
Convolutional Codesp. 377
Conclusionsp. 389
Problemsp. 392
Putting It All Togetherp. 397
Introductionp. 397
Looking Backwardp. 399
The First Generationp. 399
The Second Generationp. 400
Toward a Third Generationp. 405
Generation 2.5p. 407
Contemporary Systems and 3G Evolutionp. 411
Wideband CDMA (W-CDMA)p. 411
cdma2000 Radio Transmission Technology (RTT)p. 420
OFDM: An Architecture for the Fourth Generationp. 432
Conclusionsp. 442
Statistical Functions and Tablesp. 443
The Normal Distributionp. 443
Function Tablesp. 446
Traffic Engineeringp. 453
Grade of Service and the State of the Switchp. 453
A Model for Call Arrivalsp. 454
A Model for Holding Timep. 456
The Switch State Probabilitiesp. 457
Blocking Probability, Offered Load, and Erlang Bp. 460
Computational Techniques for the Erlang B Formulap. 462
Erlang B Tablep. 465
Acronymsp. 477
Indexp. 483
Table of Contents provided by Ingram. All Rights Reserved.

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A Coherent Systems View of Wireless and Cellular Network Design and Implementation Written for senior-level undergraduates, first-year graduate students, and junior technical professionals,Introduction to Wireless Systemsoffers a coherent systems view of the crucial lower layers of todayrsquo;s cellular systems. The authors introduce todayrsquo;s most important propagation issues, modulation techniques, and access schemes, illuminating theory with real-world examples from modern cellular systems. They demonstrate how elements within todayrsquo;s wireless systems interrelate, clarify the trade-offs associated with delivering high-quality service at acceptable cost, and demonstrate how systems are designed and implemented by teams of complementary specialists. Coverage includes Understanding the challenge of moving information wirelessly between two points Explaining how system and subsystem designers work together to analyze, plan, and implement optimized wireless systems Designing for quality reception: using the free-space range equation, and accounting for thermal noise Understanding terrestrial channels and their impairments, including shadowing and multipath reception Reusing frequencies to provide service over wide areas to large subscriber bases Using modulation: frequency efficiency, power efficiency, BER, bandwidth, adjacent-channel interference, and spread-spectrum modulation Implementing multiple access methods, including FDMA, TDMA, and CDMA Designing systems for todayrsquo;s most common forms of traffic-both ldquo;burstyrdquo; and ldquo;streamingrdquo; Maximizing capacity via linear predictive coding and other speech compression techniques Setting up connections that support reliable communication among users Introduction to Wireless Systemsbrings together the theoretical and practical knowledge readers need to participate effectively in the planning, design, or implementation of virtually any wireless system.

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