Evaluation of HSDPA and LTE : from testbed measurements to system level performance /
editors, Sebastian Caban ... [et al.].
- 1 PDF (xxxi, 372 pages) : illustrations.
Includes bibliographical references and index.
7.5.2 Channel Capacity 160 -- 7.5.3 Channel Capacity Versus Mutual Information 162 -- 7.5.4 Mutual Information Versus Achievable Mutual Information 162 -- 7.5.5 Achievable Mutual Information Versus Throughput 163 -- 7.5.6 Throughput 163 -- 7.6 Different Transmit Power Levels and Scenarios 163 -- References 164 -- 8 Throughput Performance Comparisons 167 -- 8.1 Introduction 167 -- 8.2 Cellular Systems Investigated: WiMAX and HSDPA 168 -- 8.2.1 WiMAX and HSDPA 168 -- 8.2.2 Throughput Bounds and System Losses 169 -- 8.3 Measurement Methodology and Setup 172 -- 8.4 Measurement Results 173 -- 8.4.1 WiMAX Results 173 -- 8.4.2 HSDPA Results in Standard-Compliant Setting 177 -- 8.4.3 HSDPA Results in Advanced Setting 179 -- 8.5 Summary 179 -- References 182 -- 9 Frequency Synchronization in LTE 183 -- Contributed by Qi Wang -- 9.1 Mathematical Model 184 -- 9.2 Carrier Frequency Offset Estimation in LTE 186 -- 9.2.1 Standardized Training Symbols in LTE 186 -- 9.2.2 Maximum Likelihood Estimators 188 -- 9.3 Performance Evaluation 191 -- 9.3.1 Estimation Performance 192 -- 9.3.2 Post-FFT SINR 194 -- 9.3.3 Post-equalization SINR and Throughput 195 -- References 199 -- 10 LTE Performance Evaluation 201 -- Contributed by Stefan Schwarz -- 10.1 Mathematical Model of the Physical Layer 202 -- 10.2 Receiver 203 -- 10.2.1 Channel Estimation 204 -- 10.2.2 Data Detection 205 -- 10.2.3 Further Receiver Processing 206 -- 10.3 Physical Layer Modeling 206 -- 10.3.1 Post-equalization SINR 207 -- 10.3.2 SINR Averaging 207 -- 10.4 User Equipment Feedback Calculation 208 -- 10.4.1 User Equipment Feedback Indicators 208 -- 10.4.2 Calculation of the CQI, PMI, and RI 210 -- 10.5 Practical Throughput Bounds 216 -- 10.5.1 Channel Capacity 216 -- 10.5.2 Open-Loop Mutual Information 217 -- 10.5.3 Closed-Loop Mutual Information 218 -- 10.5.4 BICM Bounds 219 -- 10.5.5 Achievable Throughput Bounds 222 -- 10.5.6 Prediction of the Optimal Performance 223 -- 10.6 Simulation Results 224 -- 10.6.1 SISO Transmission 225. 10.6.2 OLSM Transmission 227 -- 10.6.3 CLSM Transmission 229 -- References 230 -- Part IV SIMULATORS FOR WIRELESS SYSTEMS -- Introduction 237 -- References 240 -- 11 LTE Link- and System-Level Simulation 243 -- Contributed by Josep Colom Ikuno -- 11.1 The Vienna LTE Link Level Simulator 245 -- 11.1.1 Structure of the Simulator 245 -- 11.1.2 Complexity 247 -- 11.2 The Vienna LTE System Level Simulator 250 -- 11.2.1 Structure of the Simulator 250 -- 11.2.2 Simulator Implementation 252 -- 11.2.3 Complexity 253 -- 11.3 Validation of the Simulators 255 -- 11.3.1 3GPP Minimum Performance Requirements 257 -- 11.3.2 Link- and System-Level Cross-Comparison 257 -- 11.4 Exemplary Results 259 -- 11.4.1 Link-Level Throughput 259 -- 11.4.2 LTE Scheduling 262 -- References 265 -- 12 System-Level Modeling for MIMO-Enhanced HSDPA 271 -- 12.1 Concept of System-Level Modeling 271 -- 12.2 Computationally Efficient Link-Measurement Model 273 -- 12.2.1 Receive Filter 274 -- 12.2.2 WCDMA MIMO in the Network Context 276 -- 12.2.3 Equivalent Fading Parameters Description 278 -- 12.2.4 Generation of the Equivalent Fading Parameters 284 -- 12.2.5 Influence of Non-Data Channels 286 -- 12.2.6 Resulting SINR Description 287 -- 12.3 Link-Performance Model 288 -- 12.3.1 Link-Performance Model Concept 289 -- 12.3.2 Training and Validation of the Model 293 -- References 296 -- Part V SIMULATION-BASED EVALUATION FOR WIRELESS SYSTEMS -- Introduction 301 -- 13 Optimization of MIMO-Enhanced HSDPA 303 -- 13.1 Network Performance Prediction 303 -- 13.1.1 Simulation Setup 303 -- 13.1.2 Single Network Scenario Investigation 304 -- 13.1.3 Average Network Performance 306 -- 13.2 RLC-Based Stream Number Decision 310 -- 13.2.1 UE Decision 310 -- 13.2.2 RLC Decision 311 -- 13.2.3 System-Level Simulation Results 311 -- 13.3 Content-Aware Scheduling 313 -- 13.3.1 Video Packet Prioritization in HSDPA 313 -- 13.3.2 Content-Aware Scheduler 314 -- 13.3.3 Simulation Results 315 -- 13.4 CPICH Power Optimization 316 -- 13.4.1 System-Level Modeling of the CPICH Influence 317. 13.4.2 CPICH Optimization in the Cellular Context 318 -- References 321 -- 14 Optimal Multi-User MMSE Equalizer 325 -- 14.1 System Model 326 -- 14.2 Intra-Cell Interference Aware MMSE Equalization 330 -- 14.2.1 Interference Suppression Capability 332 -- 14.3 The Cell Precoding State 334 -- 14.3.1 Training-Sequence-Based Precoding State Estimation 336 -- 14.3.2 Blind Precoding State Estimation 337 -- 14.3.3 Estimator Performance 339 -- 14.4 Performance Evaluation 340 -- 14.4.1 Physical-Layer Simulation Results 340 -- 14.4.2 System-Level Simulation Results 341 -- References 343 -- 15 LTE Advanced Versus LTE 347 -- Contributed by Stefan Schwarz -- 15.1 IMT-Advanced and 3GPP Performance Targets 348 -- 15.2 Radio Interface Enhancements 349 -- 15.2.1 Bandwidth Extension 349 -- 15.2.2 Enhanced MIMO 350 -- 15.2.3 Uplink Improvements 351 -- 15.2.4 Beyond Release 10 352 -- 15.3 MIMO in LTE Advanced 354 -- 15.3.1 Codebook-Based Precoding 354 -- 15.3.2 Non-Codebook-Based Precoding 356 -- 15.4 Physical-Layer Throughput Simulation Results 359 -- 15.4.1 Eight-Antenna Transmission 359 -- 15.4.2 Comparison between LTE and LTE Advanced 363 -- 15.4.3 Comparison of SU-MIMO and MU-MIMO 363 -- References 366 -- Index 369. About the Authors xiii -- About the Contributors xv -- Preface xvii -- Acknowledgments xxiii -- List of Abbreviations xxv -- Part I CELLULAR WIRELESS STANDARDS -- Introduction 3 -- References 4 -- 1 UMTS High-Speed Downlink Packet Access 5 -- 1.1 Standardization and Current Deployment of HSDPA 5 -- 1.2 HSDPA Principles 6 -- 1.2.1 Network Architecture 7 -- 1.2.2 Physical Layer 9 -- 1.2.3 MAC Layer 13 -- 1.2.4 Radio Resource Management 14 -- 1.2.5 Quality of Service Management 16 -- 1.3 MIMO Enhancements of HSDPA 17 -- 1.3.1 Physical Layer Changes for MIMO 19 -- 1.3.2 Precoding 21 -- 1.3.3 MAC Layer Changes for MIMO 25 -- 1.3.4 Simplifications of the Core Network 26 -- References 26 -- 2 UMTS Long-Term Evolution 29 -- Contributed by Josep Colom Ikuno -- 2.1 LTE Overview 29 -- 2.1.1 Requirements 29 -- 2.2 Network Architecture 31 -- 2.3 LTE Physical Layer 33 -- 2.3.1 LTE Frame Structure 34 -- 2.3.2 Reference and Synchronization Symbols 36 -- 2.3.3 MIMO Transmission 37 -- 2.3.4 Modulation and Layer Mapping 39 -- 2.3.5 Channel Coding 41 -- 2.3.6 Channel Adaptive Feedback 45 -- 2.4 MAC Layer 46 -- 2.4.1 Hybrid Automatic Repeat Request 46 -- 2.4.2 Scheduling 47 -- 2.5 Physical, Transport, and Logical Channels 48 -- References 51 -- Part II TESTBEDS FOR MEASUREMENTS -- Introduction 57 -- Reference 58 -- 3 On Building Testbeds 59 -- 3.1 Basic Idea 60 -- 3.2 Transmitter 61 -- 3.3 Receiver 63 -- 3.4 Synchronization 65 -- 3.5 Possible Pitfalls 67 -- 3.5.1 Digital Baseband Hardware 67 -- 3.5.2 Tool and Component Selection 68 -- 3.5.3 Analog RF Front Ends 69 -- 3.5.4 Cost 70 -- 3.5.5 Matlab(R) Code and Testbeds 70 -- 3.6 Summary 71 -- References 72 -- 4 Quasi-Real-Time Testbedding 75 -- 4.1 Basic Idea 75 -- 4.2 Problem Formulation 77 -- 4.3 Employing the Basic Idea 78 -- 4.4 Data Collection 80 -- 4.4.1 More Sophisticated Sampling Techniques 81 -- 4.4.2 Variance Reduction Techniques 84 -- 4.4.3 Bias 85 -- 4.4.4 Outliers 86 -- 4.4.5 Parameter Estimation 87 -- 4.5 Evaluating and Summarizing the Data 88. 4.6 Statistical Inference 90 -- 4.6.1 Inferring the Population Mean 90 -- 4.6.2 Precision and Sample Size 91 -- 4.6.3 Reproducibility and Repeatability 92 -- 4.7 Measurement Automation 95 -- 4.8 Dealing with Feedback and Retransmissions 96 -- References 97 -- Part III EXPERIMENTAL LINK-LEVEL EVALUATION -- Introduction 101 -- 5 HSDPA Performance Measurements 103 -- 5.1 Mathematical Model of the Physical Layer 104 -- 5.1.1 System Model for the Channel Estimation 106 -- 5.1.2 System Model for the Equalizer Calculation 106 -- 5.2 Receiver 107 -- 5.2.1 Channel Estimation 107 -- 5.2.2 Equalizer 112 -- 5.2.3 Further Receiver Processing 113 -- 5.3 Quantized Precoding 113 -- 5.4 CQI and PCI Calculation 115 -- 5.4.1 HS-PDSCH Interference 115 -- 5.4.2 Pilot Interference 116 -- 5.4.3 Synchronization and Control Channel Interference 116 -- 5.4.4 Post-equalization Noise and SINR 118 -- 5.4.5 SINR to CQI Mapping 119 -- 5.5 Achievable Mutual Information 121 -- 5.6 Measurement Results 124 -- 5.6.1 Alpine Scenario 125 -- 5.6.2 Urban Scenario 128 -- 5.6.3 Discussion of the Implementation Loss 130 -- 5.7 Summary 131 -- References 132 -- 6 HSDPA Antenna Selection Techniques 139 -- Contributed by Jos'e Antonio Garc'd a-Naya -- 6.1 Existing Research 141 -- 6.2 Receive Antenna Selection 142 -- 6.2.1 Antenna Selection Based on System Throughput 143 -- 6.2.2 Hardware Aspects of Antenna Selection 143 -- 6.3 An Exemplary Measurement and its Results 144 -- 6.3.1 Urban Scenario 144 -- 6.3.2 Experimental Assessment of Antenna Selection in HSDPA 145 -- 6.3.3 Measurement Results and Discussion 147 -- 6.4 Summary 148 -- References 149 -- 7 HSDPA Antenna Spacing Measurements 153 -- 7.1 Problem Formulation 153 -- 7.2 Existing Research 154 -- 7.3 Experimental Setup 155 -- 7.4 Measurement Methodology 157 -- 7.4.1 Inferring the Mean Scenario Throughput 157 -- 7.4.2 Issues Requiring Special Attention 158 -- 7.5 Measurement Results and Discussion 160 -- 7.5.1 Equal Polarization Versus Cross-Polarization 160.
Restricted to subscribers or individual electronic text purchasers.
This book explains how the performance of modern cellular wireless networks can be evaluated by measurements and simulations With the roll-out of LTE, high data throughput is promised to be available to cellular users. In case you have ever wondered how high this throughput really is, this book is the right read for you: At first, it presents results from experimental research and simulations of the physical layer of HSDPA, WiMAX, and LTE. Next, it explains in detail how measurements on such systems need to be performed in order to achieve reproducible and repeatable results. The book further addresses how wireless links can be evaluated by means of standard-compliant link-level simulation. The major challenge in this context is their complexity when investigating complete wireless cellular networks. Consequently, it is shown how system-level simulators with a higher abstraction level can be designed such that their results still match link-level simulations. Exemplarily, the book finally presents optimizations of wireless systems over several cells. This book:
Includes bibliographical references and index.
7.5.2 Channel Capacity 160 -- 7.5.3 Channel Capacity Versus Mutual Information 162 -- 7.5.4 Mutual Information Versus Achievable Mutual Information 162 -- 7.5.5 Achievable Mutual Information Versus Throughput 163 -- 7.5.6 Throughput 163 -- 7.6 Different Transmit Power Levels and Scenarios 163 -- References 164 -- 8 Throughput Performance Comparisons 167 -- 8.1 Introduction 167 -- 8.2 Cellular Systems Investigated: WiMAX and HSDPA 168 -- 8.2.1 WiMAX and HSDPA 168 -- 8.2.2 Throughput Bounds and System Losses 169 -- 8.3 Measurement Methodology and Setup 172 -- 8.4 Measurement Results 173 -- 8.4.1 WiMAX Results 173 -- 8.4.2 HSDPA Results in Standard-Compliant Setting 177 -- 8.4.3 HSDPA Results in Advanced Setting 179 -- 8.5 Summary 179 -- References 182 -- 9 Frequency Synchronization in LTE 183 -- Contributed by Qi Wang -- 9.1 Mathematical Model 184 -- 9.2 Carrier Frequency Offset Estimation in LTE 186 -- 9.2.1 Standardized Training Symbols in LTE 186 -- 9.2.2 Maximum Likelihood Estimators 188 -- 9.3 Performance Evaluation 191 -- 9.3.1 Estimation Performance 192 -- 9.3.2 Post-FFT SINR 194 -- 9.3.3 Post-equalization SINR and Throughput 195 -- References 199 -- 10 LTE Performance Evaluation 201 -- Contributed by Stefan Schwarz -- 10.1 Mathematical Model of the Physical Layer 202 -- 10.2 Receiver 203 -- 10.2.1 Channel Estimation 204 -- 10.2.2 Data Detection 205 -- 10.2.3 Further Receiver Processing 206 -- 10.3 Physical Layer Modeling 206 -- 10.3.1 Post-equalization SINR 207 -- 10.3.2 SINR Averaging 207 -- 10.4 User Equipment Feedback Calculation 208 -- 10.4.1 User Equipment Feedback Indicators 208 -- 10.4.2 Calculation of the CQI, PMI, and RI 210 -- 10.5 Practical Throughput Bounds 216 -- 10.5.1 Channel Capacity 216 -- 10.5.2 Open-Loop Mutual Information 217 -- 10.5.3 Closed-Loop Mutual Information 218 -- 10.5.4 BICM Bounds 219 -- 10.5.5 Achievable Throughput Bounds 222 -- 10.5.6 Prediction of the Optimal Performance 223 -- 10.6 Simulation Results 224 -- 10.6.1 SISO Transmission 225. 10.6.2 OLSM Transmission 227 -- 10.6.3 CLSM Transmission 229 -- References 230 -- Part IV SIMULATORS FOR WIRELESS SYSTEMS -- Introduction 237 -- References 240 -- 11 LTE Link- and System-Level Simulation 243 -- Contributed by Josep Colom Ikuno -- 11.1 The Vienna LTE Link Level Simulator 245 -- 11.1.1 Structure of the Simulator 245 -- 11.1.2 Complexity 247 -- 11.2 The Vienna LTE System Level Simulator 250 -- 11.2.1 Structure of the Simulator 250 -- 11.2.2 Simulator Implementation 252 -- 11.2.3 Complexity 253 -- 11.3 Validation of the Simulators 255 -- 11.3.1 3GPP Minimum Performance Requirements 257 -- 11.3.2 Link- and System-Level Cross-Comparison 257 -- 11.4 Exemplary Results 259 -- 11.4.1 Link-Level Throughput 259 -- 11.4.2 LTE Scheduling 262 -- References 265 -- 12 System-Level Modeling for MIMO-Enhanced HSDPA 271 -- 12.1 Concept of System-Level Modeling 271 -- 12.2 Computationally Efficient Link-Measurement Model 273 -- 12.2.1 Receive Filter 274 -- 12.2.2 WCDMA MIMO in the Network Context 276 -- 12.2.3 Equivalent Fading Parameters Description 278 -- 12.2.4 Generation of the Equivalent Fading Parameters 284 -- 12.2.5 Influence of Non-Data Channels 286 -- 12.2.6 Resulting SINR Description 287 -- 12.3 Link-Performance Model 288 -- 12.3.1 Link-Performance Model Concept 289 -- 12.3.2 Training and Validation of the Model 293 -- References 296 -- Part V SIMULATION-BASED EVALUATION FOR WIRELESS SYSTEMS -- Introduction 301 -- 13 Optimization of MIMO-Enhanced HSDPA 303 -- 13.1 Network Performance Prediction 303 -- 13.1.1 Simulation Setup 303 -- 13.1.2 Single Network Scenario Investigation 304 -- 13.1.3 Average Network Performance 306 -- 13.2 RLC-Based Stream Number Decision 310 -- 13.2.1 UE Decision 310 -- 13.2.2 RLC Decision 311 -- 13.2.3 System-Level Simulation Results 311 -- 13.3 Content-Aware Scheduling 313 -- 13.3.1 Video Packet Prioritization in HSDPA 313 -- 13.3.2 Content-Aware Scheduler 314 -- 13.3.3 Simulation Results 315 -- 13.4 CPICH Power Optimization 316 -- 13.4.1 System-Level Modeling of the CPICH Influence 317. 13.4.2 CPICH Optimization in the Cellular Context 318 -- References 321 -- 14 Optimal Multi-User MMSE Equalizer 325 -- 14.1 System Model 326 -- 14.2 Intra-Cell Interference Aware MMSE Equalization 330 -- 14.2.1 Interference Suppression Capability 332 -- 14.3 The Cell Precoding State 334 -- 14.3.1 Training-Sequence-Based Precoding State Estimation 336 -- 14.3.2 Blind Precoding State Estimation 337 -- 14.3.3 Estimator Performance 339 -- 14.4 Performance Evaluation 340 -- 14.4.1 Physical-Layer Simulation Results 340 -- 14.4.2 System-Level Simulation Results 341 -- References 343 -- 15 LTE Advanced Versus LTE 347 -- Contributed by Stefan Schwarz -- 15.1 IMT-Advanced and 3GPP Performance Targets 348 -- 15.2 Radio Interface Enhancements 349 -- 15.2.1 Bandwidth Extension 349 -- 15.2.2 Enhanced MIMO 350 -- 15.2.3 Uplink Improvements 351 -- 15.2.4 Beyond Release 10 352 -- 15.3 MIMO in LTE Advanced 354 -- 15.3.1 Codebook-Based Precoding 354 -- 15.3.2 Non-Codebook-Based Precoding 356 -- 15.4 Physical-Layer Throughput Simulation Results 359 -- 15.4.1 Eight-Antenna Transmission 359 -- 15.4.2 Comparison between LTE and LTE Advanced 363 -- 15.4.3 Comparison of SU-MIMO and MU-MIMO 363 -- References 366 -- Index 369. About the Authors xiii -- About the Contributors xv -- Preface xvii -- Acknowledgments xxiii -- List of Abbreviations xxv -- Part I CELLULAR WIRELESS STANDARDS -- Introduction 3 -- References 4 -- 1 UMTS High-Speed Downlink Packet Access 5 -- 1.1 Standardization and Current Deployment of HSDPA 5 -- 1.2 HSDPA Principles 6 -- 1.2.1 Network Architecture 7 -- 1.2.2 Physical Layer 9 -- 1.2.3 MAC Layer 13 -- 1.2.4 Radio Resource Management 14 -- 1.2.5 Quality of Service Management 16 -- 1.3 MIMO Enhancements of HSDPA 17 -- 1.3.1 Physical Layer Changes for MIMO 19 -- 1.3.2 Precoding 21 -- 1.3.3 MAC Layer Changes for MIMO 25 -- 1.3.4 Simplifications of the Core Network 26 -- References 26 -- 2 UMTS Long-Term Evolution 29 -- Contributed by Josep Colom Ikuno -- 2.1 LTE Overview 29 -- 2.1.1 Requirements 29 -- 2.2 Network Architecture 31 -- 2.3 LTE Physical Layer 33 -- 2.3.1 LTE Frame Structure 34 -- 2.3.2 Reference and Synchronization Symbols 36 -- 2.3.3 MIMO Transmission 37 -- 2.3.4 Modulation and Layer Mapping 39 -- 2.3.5 Channel Coding 41 -- 2.3.6 Channel Adaptive Feedback 45 -- 2.4 MAC Layer 46 -- 2.4.1 Hybrid Automatic Repeat Request 46 -- 2.4.2 Scheduling 47 -- 2.5 Physical, Transport, and Logical Channels 48 -- References 51 -- Part II TESTBEDS FOR MEASUREMENTS -- Introduction 57 -- Reference 58 -- 3 On Building Testbeds 59 -- 3.1 Basic Idea 60 -- 3.2 Transmitter 61 -- 3.3 Receiver 63 -- 3.4 Synchronization 65 -- 3.5 Possible Pitfalls 67 -- 3.5.1 Digital Baseband Hardware 67 -- 3.5.2 Tool and Component Selection 68 -- 3.5.3 Analog RF Front Ends 69 -- 3.5.4 Cost 70 -- 3.5.5 Matlab(R) Code and Testbeds 70 -- 3.6 Summary 71 -- References 72 -- 4 Quasi-Real-Time Testbedding 75 -- 4.1 Basic Idea 75 -- 4.2 Problem Formulation 77 -- 4.3 Employing the Basic Idea 78 -- 4.4 Data Collection 80 -- 4.4.1 More Sophisticated Sampling Techniques 81 -- 4.4.2 Variance Reduction Techniques 84 -- 4.4.3 Bias 85 -- 4.4.4 Outliers 86 -- 4.4.5 Parameter Estimation 87 -- 4.5 Evaluating and Summarizing the Data 88. 4.6 Statistical Inference 90 -- 4.6.1 Inferring the Population Mean 90 -- 4.6.2 Precision and Sample Size 91 -- 4.6.3 Reproducibility and Repeatability 92 -- 4.7 Measurement Automation 95 -- 4.8 Dealing with Feedback and Retransmissions 96 -- References 97 -- Part III EXPERIMENTAL LINK-LEVEL EVALUATION -- Introduction 101 -- 5 HSDPA Performance Measurements 103 -- 5.1 Mathematical Model of the Physical Layer 104 -- 5.1.1 System Model for the Channel Estimation 106 -- 5.1.2 System Model for the Equalizer Calculation 106 -- 5.2 Receiver 107 -- 5.2.1 Channel Estimation 107 -- 5.2.2 Equalizer 112 -- 5.2.3 Further Receiver Processing 113 -- 5.3 Quantized Precoding 113 -- 5.4 CQI and PCI Calculation 115 -- 5.4.1 HS-PDSCH Interference 115 -- 5.4.2 Pilot Interference 116 -- 5.4.3 Synchronization and Control Channel Interference 116 -- 5.4.4 Post-equalization Noise and SINR 118 -- 5.4.5 SINR to CQI Mapping 119 -- 5.5 Achievable Mutual Information 121 -- 5.6 Measurement Results 124 -- 5.6.1 Alpine Scenario 125 -- 5.6.2 Urban Scenario 128 -- 5.6.3 Discussion of the Implementation Loss 130 -- 5.7 Summary 131 -- References 132 -- 6 HSDPA Antenna Selection Techniques 139 -- Contributed by Jos'e Antonio Garc'd a-Naya -- 6.1 Existing Research 141 -- 6.2 Receive Antenna Selection 142 -- 6.2.1 Antenna Selection Based on System Throughput 143 -- 6.2.2 Hardware Aspects of Antenna Selection 143 -- 6.3 An Exemplary Measurement and its Results 144 -- 6.3.1 Urban Scenario 144 -- 6.3.2 Experimental Assessment of Antenna Selection in HSDPA 145 -- 6.3.3 Measurement Results and Discussion 147 -- 6.4 Summary 148 -- References 149 -- 7 HSDPA Antenna Spacing Measurements 153 -- 7.1 Problem Formulation 153 -- 7.2 Existing Research 154 -- 7.3 Experimental Setup 155 -- 7.4 Measurement Methodology 157 -- 7.4.1 Inferring the Mean Scenario Throughput 157 -- 7.4.2 Issues Requiring Special Attention 158 -- 7.5 Measurement Results and Discussion 160 -- 7.5.1 Equal Polarization Versus Cross-Polarization 160.
Restricted to subscribers or individual electronic text purchasers.
This book explains how the performance of modern cellular wireless networks can be evaluated by measurements and simulations With the roll-out of LTE, high data throughput is promised to be available to cellular users. In case you have ever wondered how high this throughput really is, this book is the right read for you: At first, it presents results from experimental research and simulations of the physical layer of HSDPA, WiMAX, and LTE. Next, it explains in detail how measurements on such systems need to be performed in order to achieve reproducible and repeatable results. The book further addresses how wireless links can be evaluated by means of standard-compliant link-level simulation. The major challenge in this context is their complexity when investigating complete wireless cellular networks. Consequently, it is shown how system-level simulators with a higher abstraction level can be designed such that their results still match link-level simulations. Exemplarily, the book finally presents optimizations of wireless systems over several cells. This book:
- . Explains how the performance of modern cellular wireless networks can be evaluated by measurements and simulations. Discusses the concept of testbeds, highlighting the challenges and expectations when building them. Explains measurement techniques, including the evaluation of the measurement quality by statistical inference techniques. Presents throughput results for HSDPA, WiMAX, and LTE. Demonstrates simulators at both, link- level and system-level. Provides system-level and link-level simulators (for WiMAX and LTE) on an accompanying website (https://www.nt.tuwien.ac.at/downloads/featured-downloads) This book is an insightful guide for researchers and engineers working in the field of mobile radio communication as well as network planning. Advanced students studying related courses will also find the book interesting.
Mode of access: World Wide Web
9781119954705
10.1002/9781119954705 doi
Long-Term Evolution (Telecommunications)
Packet transmission (Data transmission)
Electronic books.
TK5103.48325 / .E93 2012eb
621.382