Wireless Personal Communications

, Volume 97, Issue 3, pp 4285–4304 | Cite as

Small-Scale Fading Statistics of Emerging 3-D Mobile Radio Cellular Propagation Channels

  • Abrar Ahmed
  • Syed Junaid Nawaz
  • Sardar Muhammad Gulfam
Article
  • 96 Downloads

Abstract

In delivering fifth generation (5G) communication networks, the fundamental advancements in the scale of antenna arrays, density of networks, mobility of communicating nodes, size of cells, and range of frequencies necessitate the derivation of an appropriate and reliable channel model. A tunable three dimensional (3-D) geometric channel model comprehending the mobility of user terminal together with high degree of flexibility in modelling the shape, orientation, and scale of the scattering region is proposed. Characterization of Doppler spectrum, quantization of multipath dispersion in angular domain, and second order fading statistics of the radio propagation channel is presented. Mathematical expressions for joint and marginal probability density function of Doppler shift and multipath power are derived for this advanced 3-D hollow geometric scattering model. Next, an analysis on the Doppler spectrum is presented, where the impact of various physical channel parameters on its statistical characteristics is analyzed. Since, the quantification of multipath dispersion in 3-D angular domain is of vital importance for designing large scale planner antenna arrays with very high directional resolution for emerging 5G communications, therefore, a thorough analysis on the multipath shape factors (SFs) of the proposed analytical 3-D channel model is conducted. Finally, the analysis on SFs is extended for characterization of second order fading statistics of multipath channels.

Keywords

Doppler effect Doppler spectrum Geometric model 3-D Ellipsoid Cylinder Shape factors Second order statistics Fading statistics 

Notes

Acknowledgements

A part of this research work was supported by the EU ATOM-690750 research project approved under the call H2020-MSCA-RISE-2015.

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Copyright information

© Springer Science+Business Media, LLC 2017

Authors and Affiliations

  1. 1.Department of Electrical EngineeringCOMSATS Institute of Information TechnologyIslamabadPakistan

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