Browsing Τμήμα Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών / Department of Electrical and Computer Engineering by Author "Djouadi, S. M."
Now showing items 21-39 of 39
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Conference Object
Robust capacity for additive colored Gaussian uncertain channels
Charalambous, Charalambos D.; Denic, S. Z.; Djouadi, S. M. (2005)This paper is concerned with the definition and computation of channel capacity of continuous time additive Gaussian channels, when the channel is subject to uncertainty, the noise power spectral density is known and the ...
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Conference Object
Robust capacity of a Gaussian noise channel with channel and noise uncertainty
Charalambous, Charalambos D.; Denic, S. Z.; Djouadi, S. M. (2005)This paper is concerned with the problem of defining, and computing the capacity of a continuous-time additive Gaussian noise communication channel when the true frequency response of the channel, and the power spectral ...
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Conference Object
Robust capacity of white Gaussian noise channels with uncertainty
Charalambous, Charalambos D.; Denic, S. Z.; Djouadi, S. M. (2004)This paper concerns the problem of defining, and computing the channel capacity of a continuous time additive white Gaussian noise channel when the true frequency response of the channel is not completely known to the ...
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Article
Statistical analysis of multipath fading channels using generalizations of shot noise
Charalambous, Charalambos D.; Djouadi, S. M.; Kourtellaris, C. (2008)This paper provides a connection between the shot-noise analysis of Rice and the statistical analysis of multipath fading wireless channels when the received signals are a low-pass signal and a bandpass signal. Under certain ...
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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 H∞-control of nonlinear discrete-time partially observable systems and dissipation inequalities
Charalambous, Charalambos D.; Djouadi, S. M.; Ahmed, N. U. (2002)This paper employs an action functional approach to formulate partially observable nonlinear discrete-time stochastic minimax games. The maximizing players of the games are stochastic square summable disturbances, while ...
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Article
Stochastic nonlinear minimax filtering in continuous-time
Charalambous, Charalambos D.; Djouadi, S. M. (2001)This paper discusses nonlinear stochastic minimax games in which the minimizing player is the state estimate while the maximizing players are square-integrable stochastic disturbances. A pathwise optimization method is ...
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Article
Stochastic power control for short-term flat fading wireless networks: Almost sure QoS measures
Charalambous, Charalambos D.; Denic, S. Z.; Djouadi, S. M.; Menemenlis, N. (2001)The power control of wireless networks is formulated using a stochastic optimal control framework, in which the evolution of the channel is described by stochastic differential equations. Under this scenario, average and ...
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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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Article
Stochastic power control for wireless networks via SDEs: Probabilistic QoS measures
Charalambous, Charalambos D.; Djouadi, S. M.; Denic, S. Z. (2005)The power control of wireless networks is formulated using a stochastic optimal control framework, in which the evolution of the channel is described by stochastic differential equations (SDEs). The latter rapture the ...
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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, ...
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Article
Time-varying optimal disturbance minimization in presence of plant uncertainty
Djouadi, S. M.; Charalambous, Charalambos D. (2009)The optimal robust disturbance rejection problem plays an important role in feedback control theory. Here, its time-varying version is solved explicit ly in terms of duality and operator theory. In particular, the optimum ...
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Conference Object
Time-varying optimal disturbance rejection in presence of plant uncertainty
Djouadi, S. M.; Charalambous, Charalambos D. (Institute of Electrical and Electronics Engineers Inc., 2007)The optimal robust disturbance rejection problem plays an important role in feedback control theory. Here its time-varying version is solved explicitly in terms of duality and operator theory. In particular, the optimum ...