Indoor Radio Channel Propagation Modelling by Ray Tracing Techniques

David I. Laurenson

A thesis submitted for the degree of Doctor of Philosophy at The University of Edinburgh

- 1994 -

• Declaration of Originality
• Abstract
• Contents
• List of Figures
• List of Tables
• List of Abbreviations and Acronyms
• List of Principal Symbols
• Acknowledgements
• Introduction
  • Communication Systems
  • In-building Communications
    • The requirement
    • Wireless advantages and disadvantages
    • Interconnection technology
  • Channel Modelling
  • Ray Tracing for Channel Modelling
  • Organisation
• Channel Measurement and Modelling
  • Introduction
  • Previous Work in Channel Modelling and Measurement
    • Narrowband models and measurements
      • Large-scale signal characterisation
      • Small-scale signal characterisation
      • Frequency dependency of models
      • Correlation between multiply received signals
      • Rapidity, duration and frequency of occurrence of fades
      • Doppler spread
      • Simulation systems
    • Wideband models and measurements
      • Temporal measurements and models
      • Parametric models
      • Other modelling techniques
    • Additional considerations
      • Noise
      • Polarization
  • Summary
• Ray Tracing Model
  • Introduction
  • Electromagnetic Radiation
  • Dielectric Surfaces
    • Electromagnetic polarization
    • Reflection
    • Transmission
    • Reflection and transmission coefficients for a non-infinitely thick slab
  • Diffraction
  • Electromagnetic Scattering
  • Ray Geometry Effects
  • Ray tracing algorithm
    • Calculation of the reflection and transmission coefficients
  • Conclusions
• Narrowband Experimental Work
  • Introduction
  • Channel Measurements
    • Site A measurements
    • Site B measurements
  • Basic narrowband ray tracing model
    • Model design
    • Model simplifications
    • Assumptions used to construct the model
    • Experimental procedure
  • Ray Tracing Model including the effects of Diffraction
    • Ray Tracing Model incorporating the Geometrical Theory of Diffraction
  • Conclusions
• Electromagnetic Simulation
  • Introduction
  • Ray Tracing Model incorporating Electromagnetic Polarization
  • Conclusion
• Wideband Simulation Results
  • Introduction
  • Interarrival Times of Multipath Components
  • Joint probability function of signal strength and delay
    • Joint probability graph of LOS experiment at Site A
    • Joint probability graph of LOS experiment at Site B
  • Conclusions
• Conclusions and Future Work
  • Conclusions
  • Further Work
    • Determination of the electromagnetic properties of building structures
    • Reduction in execution time of channel simulation
    • Regeneration of a channel from statistical information collected
    • Investigation of the phase relationships of multipath components
• Proof of Equations used in Section 3.3
  • Proof of (3.14) taken from [86]
  • Proof of (3.15) taken from [86]
  • Proof of equations (3.16) and (3.17)
  • Proof of equations (3.18) and (3.19)
  • Proof of equations (3.20) and (3.21)
  • Proof of equations (3.26) and (3.27)
• Software
• Ray Tracing Software
  • Input and output data files
  • Ray tracing software
  • Possible speedup techniques to reduce computation time
• Post Processing Software
  • Probability Graphs
• Probability Distributions
• Nakagami Distribution
• Ricean Distribution
• Weibull Distribution
• References
• Publications
• About this document ...