An experimental investigation into the influence of user state and environment on fading characteristics in wireless body area networks at 2.45 GHz

Simon Cotton, William Scanlon

Research output: Contribution to journalArticle

94 Citations (Scopus)

Abstract

Using seven strategically placed, time-synchronized bodyworn receivers covering the head, upper front and back torso, and the limbs, we have investigated the effect of user state: stationary or mobile and local environment: anechoic chamber, open office area and hallway upon first and second order statistics for on-body fading channels. Three candidate models were considered: Nakagami, Rice and lognormal. Using maximum likelihood estimation and the Akaike information criterion it was established that the Nakagami-m distribution best described small-scale fading for the majority of on-body channels over all the measurement scenarios. When the user was stationary, Nakagami-m parameters were found to be much greater than 1, irrespective of local surroundings. For mobile channels, Nakagami-m parameters significantly decreased, with channels in the open office area and hallway experiencing the worst fading conditions.
Original languageEnglish
Article number4786471
Pages (from-to)6-12
Number of pages7
JournalIEEE Transactions on Wireless Communications
Volume8
Issue number1
DOIs
Publication statusPublished - Jan 2009

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Applied Mathematics

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