Physics Based Modeling of Experimental Data Encountered in Cellular Wireless Communication

Tapan Kumar Sarkar, Heng Chen, Magdalena Salazar Palma, Ming da Zhu

Research output: Contribution to journalArticle

1 Scopus citations

Abstract

This paper presents a physics based macro model that can predict with a high degree of accuracy the various experimental data available for the propagation path loss of radio waves in a cellular wireless environment. A theoretical macro model based on the classical Sommerfeld formulation can duplicate the various experimental data including that of Y. Okumura and his coworkers carried out in 1968. It is important to point out that there are also many statistical models but they do not conform to the results of the available experimental data. Specifically, there are separate path loss propagation models available in the literature for waves travelling in urban, suburban, rural environments and the like. However no such distinction is made in the results obtained from the theoretical analysis and measured experimental data. And based on the analysis using the macro model developed after Sommerfeld’s classic century old analytical formulation, one can also explain the origin of slow fading which is due to the interference between the direct wave from the base station antenna and the ground wave emanating from the reflections of the direct wave and occurs only in the near field of the transmitting antenna. The so called height gain occurs in the far field of a base station antenna deployment which falls generally outside the cell of interest while in the near field, within the cell, there is a height loss of the field strength for observation points near the ground. A physical realization of the propagation mechanism is illustrated through Vander Pol’s exact transformation of the Sommerfeld integrals for the potential to a spatial semi-infinite volume integral and thus illustrates why buildings, trees and the like have little effects on the propagation mechanism.

Original languageEnglish (US)
JournalIEEE Transactions on Antennas and Propagation
DOIs
StateAccepted/In press - Jan 1 2018

Keywords

  • Antennas
  • AWAS
  • Cellular Radio Wave Propagation
  • Data models
  • Earth
  • Experimental data for Radio Waves
  • Path Loss Exponent
  • Propagation losses
  • Reflection coefficient
  • Schelkunoff Formulation
  • Sommerfeld Formulation
  • Wireless communication

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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