Browsing by Author "Olama, M. M."
Now showing items 1-17 of 17
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Conference Object
Distributed stochastic power control for time-varying long-term and short-term fading wireless networks
Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D.; Sahyoun, S. (2007)In this paper, new time-varying wireless channel models that capture both the space and time variations of longterm and short-term fading wireless networks are developed. The proposed models are based on stochastic ...
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Conference Object
Estimation and identification of time-varying long-term fading channels via the particle filter and the em algorithm
Ma, X.; Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2011)In this paper, we are concerned with the estimation and identification of time-varying wireless longterm fading channels. The dynamics of the fading channels are captured using a mean-reverting linear stochastic differential ...
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Conference Object
Estimation and identification of time-varying long-term fading wireless channels with application to power control
Olama, M. M.; Jaladhi, K. K.; Djouadi, S. M.; Charalambous, Charalambos D. (Institute of Electrical and Electronics Engineers Inc., 2007)This paper is concerned with modeling of time-varying wireless fading channels, parameter estimation, identification, and optimal power control from received signal measurements. Wireless channels are represented by ...
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Conference Object
Estimation of mobile station position and velocity in multipath wireless networks using the unscented particle filter
Olama, M. M.; Djouadi, S. M.; Papageorgiou, I. G.; Charalambous, Charalambos D. (2007)This paper presents a method based on wave scattering model for tracking a user. The 3D wave scattering multipath channel model of Aulin is employed together with particle Altering to obtain mobile station location and ...
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Conference Object
A general framework for continuous time power control in time varying long term fading wireless networks
Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2007)In this paper, a general framework for continuous time power control algorithm under time varying long term fading wireless channels is developed. This contrasts most of the power control algorithms introduced in the ...
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Conference Object
Position and velocity tracking in cellular networks using particle and Kalman filtering with comparison
Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2006)This paper presents two methods for tracking a User based on Aulin's Wave scattering channel model. The first method is based on the extended Kalman Alter approach, while the second method is based on the particle Alter ...
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Article
Position and velocity tracking in mobile networks using particle and Kalman filtering with comparison
Olama, M. M.; Djouadi, S. M.; Papageorgiou, I. G.; Charalambous, Charalambos D. (2008)This paper presents several methods based on signal strength and wave scattering models for tracking a user. The received-signal level method is first used in combination with maximum likelihood (ML) estimation and ...
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Article
Recursive Estimation and Identification of Time-Varying Long-Term Fading Channels
Olama, M. M.; Jaladhi, K. K.; Djouadi, S. M.; Charalambous, Charalambos D. (2007)
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Conference Object
Stochastic channel modeling for ad hoc wireless networks
Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2006)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 ...
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Article
Stochastic differential equations for modeling, estimation and identification of mobile-to-mobile communication channels
Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2009)Mobile-to-mobile networks are characterized by node mobility that makes the propagation environment time varying and subject to fading. As a consequence, the statistical characteristics of the received signal vary continuously, ...
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Conference Object
Stochastic power control for time-varying fading wireless communication networks
Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2005)The performance of stochastic optimal power control for time-varying fading channels, in which the evolution of the dynamical channel is described by stochastic differential equations, is determined. Both long-term and ...
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Conference Object
Stochastic power control for time-varying flat fading wireless channels
Olama, M. M.; Shajaat, S. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2005)The performance of stochastic optimal power control of time-varying wireless short-term flat fading channels, in which the evolution of the dynamical channel is described by a stochastic state space representation, is ...
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Conference Object
Stochastic power control for time-varying lognormal fading wireless channels
Olama, M. M.; Shajaat, S. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2005)The performance of stochastic optimal power control of time varying lognormal fading channels, in which the evolution of the dynamical channel is described by stochastic differential equations (SDE's), is determined. Unlike ...
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Article
Stochastic power control for time-varying long-term fading wireless networks
Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2006)A new time-varying (TV) long-term fading (LTF) channel model which captures both the space and time variations of wireless systems is developed. The proposed TV LTF model is based on a stochastic differential equation ...
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Conference Object
Stochastic wireless channel modeling, estimation and identification from measurements
Olama, M. M.; Li, Y.; Djouadi, S. M.; Charalambous, Charalambos D. (2008)This paper is concerned with stochastic modeling of wireless fading channels, parameter estimation, and system identification from measurement data. Wireless channels are represented by stochastic state-space form, whose ...
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Conference Object
Time varying channel modeling for ad-hoc mobile wireless networks
Olama, M. M.; Djouadi, S. M.; Charalambous, Charalambos D. (2006)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 ...
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Conference Object
Time varying wireless channel modeling, estimation, identification, and power control from measurements
Olama, M. M.; Yanyan, L.; Djouadi, S. M.; Charalambous, Charalambos D. (2007)This paper is concerned with a time-varying wireless channel modeling, its parameter estimation, system identification, and optimal power control from measurement data. The channel model is represented in state space form, ...