Tabla de Contenidos: “…6.5.3 Performance Evaluation 219 -- 6.5.4 Conclusions and Further Work 222 -- References 222 -- 7 Introduction to Multimedia Communications 225 -- 7.1 Introduction 225 -- 7.2 State of the Art: Wireless Multimedia Communications 228 -- 7.2.1 QoS in Wireless Networks 228 -- 7.2.2 Constraints on Wireless Multimedia Communications 231 -- 7.2.3 Multimedia Compression Technologies 234 -- 7.2.4 Multimedia Transmission Issues in Wireless Networks 235 -- 7.2.5 Resource Management Strategy in Wireless Multimedia Communications 239 -- 7.3 Conclusions 244 -- References 244 -- 8 Wireless Channel Models 247 -- 8.1 Introduction 247 -- 8.2 GPRS/EGPRS Channel Simulator 247 -- 8.2.1 GSM/EDGE Radio Access Network (GERAN) 247 -- 8.2.2 GPRS Physical Link Layer Model Description 250 -- 8.2.3 EGPRS Physical Link Layer Model Description 252 -- 8.2.4 GPRS Physical Link Layer Simulator 256 -- 8.2.5 EGPRS Physical Link Layer Simulator 261 -- 8.2.6 E/GPRS Radio Interface Data Flow Model 268 -- 8.2.7 Real-time GERAN Emulator 270 -- 8.2.8 Conclusion 271 -- 8.3 UMTS Channel Simulator 272 -- 8.3.1 UMTS Terrestrial Radio Access Network (UTRAN) 272 -- 8.3.2 UMTS Physical Link Layer Model Description 279 -- 8.3.3 Model Verification for Forward Link 290 -- 8.3.4 UMTS Physical Link Layer Simulator 298 -- 8.3.5 Performance Enhancement Techniques 307 -- 8.3.6 UMTS Radio Interface Data Flow Model 309 -- 8.3.7 Real-time UTRAN Emulator 312 -- 8.3.8 Conclusion 313 -- 8.4 WiMAX IEEE 802.16e Modeling 316 -- 8.4.1 Introduction 316 -- 8.4.2 WIMAX System Description 317 -- 8.4.3 Physical Layer Simulation Results and Analysis 323 -- 8.4.4 Error Pattern Files Generation 324 -- 8.5 Conclusions 328 -- 8.6 Appendix: Eb/No and DPCH_Ec/Io Calculation 329 -- References 330 -- 9 Enhancement Schemes for Multimedia Transmission over Wireless Networks 333 -- 9.1 Introduction 333 -- 9.1.1 3G Real-time Audiovisual Requirements 333 -- 9.1.2 Video Transmission over Mobile Communication Systems 335 -- 9.1.3 Circuit-switched Bearers 339.…”

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