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dc.contributor.authorOlama, M. M.en
dc.contributor.authorDjouadi, S. M.en
dc.contributor.authorCharalambous, Charalambos D.en
dc.creatorOlama, M. M.en
dc.creatorDjouadi, S. M.en
dc.creatorCharalambous, Charalambos D.en
dc.description.abstractDue 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. © 2006 IEEE.en
dc.sourceIEEE Wireless Communications and Networking Conference, WCNCen
dc.sourceIEEE Wireless Communications and Networking Conference, WCNCen
dc.subjectStatistical methodsen
dc.subjectStochastic control systemsen
dc.subjectState space methodsen
dc.subjectFading channelsen
dc.subjectAd hoc networksen
dc.subjectDoppler effecten
dc.subjectChannel estimationen
dc.subjectDoppler power spectral density (dpsd)en
dc.subjectDynamic modelsen
dc.subjectState space representationen
dc.subjectTime varying channel modelingen
dc.titleTime varying channel modeling for ad-hoc mobile wireless networksen
dc.description.endingpage1282Πολυτεχνική Σχολή / Faculty of EngineeringΤμήμα Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών / Department of Electrical and Computer Engineering
dc.type.uhtypeConference Objecten
dc.contributor.orcidCharalambous, Charalambos D. [0000-0002-2168-0231]

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