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Evaluation of HSDPA and LTE: From Testbed Measurements to System Level Performance

Book Description

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.

Table of Contents

  1. Cover
  2. Title Page
  3. Copyright
  4. About the Authors
  5. About the Contributors
  6. Preface
  7. Acknowledgments
  8. List of Abbreviations
  9. Part One: Cellular Wireless Standards
    1. Chapter 1: UMTS High-Speed Downlink Packet Access
      1. 1.1 Standardization and Current Deployment of HSDPA
      2. 1.2 HSDPA Principles
      3. 1.3 MIMO Enhancements of HSDPA
      4. References
    2. Chapter 2: UMTS Long-Term Evolution
      1. 2.1 LTE Overview
      2. 2.2 Network Architecture
      3. 2.3 LTE Physical Layer
      4. 2.4 MAC Layer
      5. 2.5 Physical, Transport, and Logical Channels
      6. Referenes
  10. Part Two: Testbeds for Measurements
    1. Chapter 3: On Building Testbeds
      1. 3.1 Basic Idea
      2. 3.2 Transmitter
      3. 3.3 Receiver
      4. 3.4 Synchronization
      5. 3.5 Possible Pitfalls
      6. 3.6 Summary
      7. References
    2. Chapter 4: Quasi-Real-Time Testbedding
      1. 4.1 Basic Idea
      2. 4.2 Problem Formulation
      3. 4.3 Employing the Basic Idea
      4. 4.4 Data Collection
      5. 4.5 Evaluating and Summarizing the Data
      6. 4.6 Statistical Inference
      7. 4.7 Measurement Automation
      8. 4.8 Dealing with Feedback and Retransmissions
      9. References
  11. Part Three: Experimental Link-Level Evaluation
    1. Chapter 5: HSDPA Performance Measurements
      1. 5.1 Mathematical Model of the Physical Layer
      2. 5.2 Receiver
      3. 5.3 Quantized Precoding
      4. 5.4 CQI and PCI Calculation
      5. 5.5 Achievable Mutual Information
      6. 5.6 Measurement Results
      7. 5.7 Summary
      8. References
    2. Chapter 6: HSDPA Antenna Selection Techniques
      1. 6.1 Existing Research
      2. 6.2 Receive Antenna Selection
      3. 6.3 An Exemplary Measurement and its Results
      4. 6.4 Summary
      5. References
    3. Chapter 7: HSDPA Antenna Spacing Measurements
      1. 7.1 Problem Formulation
      2. 7.2 Existing Research
      3. 7.3 Experimental Setup
      4. 7.4 Measurement Methodology
      5. 7.5 Measurement Results and Discussion
      6. 7.6 Different Transmit Power Levels and Scenarios
      7. References
    4. Chapter 8: Throughput Performance Comparisons
      1. 8.1 Introduction
      2. 8.2 Cellular Systems Investigated: WiMAX and HSDPA
      3. 8.3 Measurement Methodology and Setup
      4. 8.4 Measurement Results
      5. 8.5 Summary
      6. References
    5. Chapter 9: Frequency Synchronization in LTE
      1. 9.1 Mathematical Model
      2. 9.2 Carrier Frequency Offset Estimation in LTE
      3. 9.3 Performance Evaluation
      4. References
    6. Chapter 10: LTE Performance Evaluation
      1. 10.1 Mathematical Model of the Physical Layer
      2. 10.2 Receiver
      3. 10.3 Physical Layer Modeling
      4. 10.4 User Equipment Feedback Calculation
      5. 10.5 Practical Throughput Bounds
      6. 10.6 Simulation Results
      7. References
  12. Part Four: Simulators for Wireless Systems
    1. Chapter 11: LTE Link- and System-Level Simulation
      1. 11.1 The Vienna LTE Link Level Simulator
      2. 11.2 The Vienna LTE System Level Simulator
      3. 11.3 Validation of the Simulators
      4. 11.4 Exemplary Results
      5. References
    2. Chapter 12: System-Level Modeling for MIMO-Enhanced HSDPA
      1. 12.1 Concept of System-Level Modeling
      2. 12.2 Computationally Efficient Link-Measurement Model
      3. 12.3 Link-Performance Model
      4. References
  13. Part Five: Simulation-Based Evaluation for Wireless Systems
    1. Chapter 13: Optimization of MIMO-Enhanced HSDPA
      1. 13.1 Network Performance Prediction
      2. 13.2 RLC-Based Stream Number Decision
      3. 13.3 Content-Aware Scheduling
      4. 13.4 CPICH Power Optimization
      5. References
    2. Chapter 14: Optimal Multi-User MMSE Equalizer
      1. 14.1 System Model
      2. 14.2 Intra-Cell Interference Aware MMSE Equalization
      3. 14.3 The Cell Precoding State
      4. 14.4 Performance Evaluation
      5. References
    3. Chapter 15: LTE Advanced Versus LTE
      1. 15.1 IMT-Advanced and 3GPP Performance Targets
      2. 15.2 Radio Interface Enhancements
      3. 15.3 MIMO in LTE Advanced
      4. 15.4 Physical-Layer Throughput Simulation Results
      5. References
  14. Index