A Channel Model for Polarized Off-Body Communications with Dynamic Users

Kenan Turbic, Luis M. Correia, Marko Beko

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

This paper presents an off-body channel model for polarized communications with dynamic users. The model is based on Geometrical Optics and Uniform Theory of Diffraction and accounts for free space propagation, reflections, and diffractions. It allows for arbitrary antennas' polarizations and gain patterns and supports a number of on-body antenna placements. In order to take the influence of users' motion into account, a mobility model for wearable antennas on dynamic users is used. Signal depolarization mechanisms are identified, and simulations are performed to analyze the influence of user dynamics on the channel. The results show that significant polarization mismatch losses occur due to wearable antenna rotations, resulting in received power variations up to 37.5 dB for the line-of-sight component and 41.4 dB for the scattered one. The importance of taking signal polarization into account is demonstrated by comparing the simulation results between polarized and nonpolarized channel models in a free space propagation scenario, where a difference up to 53 dB in between the two is observed.

Original languageEnglish
Article number8753689
Pages (from-to)7001-7013
Number of pages13
JournalIEEE Transactions on Antennas and Propagation
Volume67
Issue number11
DOIs
Publication statusPublished - Nov 2019

Keywords

  • Body area networks (BANs)
  • dynamic users
  • polarized off-body channel
  • wireless communication

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