Time varying channel modeling for ad-hoc mobile wireless networks

M. M. Olama, S. M. Djouadi, C. D. Charalambous

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

3 Scopus citations

Abstract

Due to nodes mobility and environmental changes in mobile ad-hoc networks, the ad-hoc channel is time varying and subject to fading. As a consequence of these variations, the statistical characteristics of the received signal vary continuously, giving rise to a Doppler power spectral density (DPSD) which varies from one observation instant to the next. As a result, the traditional models can no longer capture and track complex time variations in the propagation environment. These time variations compel us to introduce more advanced dynamical models in order to capture higher order dynamics of the ad-hoc channel. A stochastic ad-hoc short term fading channel model, in which the evolution of the dynamical channel is described by a stochastic state space representation, is derived. The parameters of the stochastic state space model are determined by approximating the band limited DPSD. Inphase and quadrature components of the ad-hoc channel are derived. Numerical results show that link performance for ad-hoc case is worse than cellular case, but the performance gap shrinks with increased mobility.

Original languageEnglish
Title of host publication2006 IEEE Wireless Communications and Networking Conference, WCNC 2006
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1277-1282
Number of pages6
ISBN (Print)1424402700, 9781424402700
DOIs
StatePublished - 2006
Externally publishedYes
Event2006 IEEE Wireless Communications and Networking Conference, WCNC 2006 - Las Vegas, NV, United States
Duration: Apr 3 2006Apr 6 2006

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
Volume3
ISSN (Print)1525-3511

Conference

Conference2006 IEEE Wireless Communications and Networking Conference, WCNC 2006
Country/TerritoryUnited States
CityLas Vegas, NV
Period04/3/0604/6/06

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