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Radiowave Propagation Modeling Along a Street for Use in Microcells in Third Generation Wireless Communications

Sadeghi, Hamed | 2010

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  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 40753 (05)
  4. University: Sharif University of Technology
  5. Department: Electrical Engineering
  6. Advisor(s): Farzaneh, Forouhar
  7. Abstract:
  8. In this thesis, a simplified method was introduced to model the wave scattering by the metallic objects in a microcell, in order to determine the coverage pattern. First, the equivalent images method was introduced, which models the building walls effect. This method is fast, memory saving and accurate enough to estimate the scattered fields. Two-ray incidence model accuracy was investigated and confirmed in modeling the scattering from the metallic objects. This method also enhances saving in time and memory. The accuracy of single scattering assumption was investigated and confirmed in a scenario of multiple metallic scatterers. Based on this assumption, we can superimpose the scattered fields by every scatterer to determine the total scattered field, because it assumes that the mutual effects between the scatterers are negligible. This was a motivation to fit suitable curves to the amplitude and phase of the scattered fields of a single object in order to increase the speed of field computation. This goal was achieved for a typical lamp-post and the fitted curves accuracy was satisfactory enough
  9. Keywords:
  10. Scattering ; Moment Method ; Courve Fitting ; Physical Optics ; Microcell ; Third Generation Wireless Communications ; Multi-Level Fast Multi-Pole Method (MLFMM) ; Building's Effect ; Metallic Objects Effect ; Two-Ray Incidence Model ; Single Scattering

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