Browsing by Author "Charalambous, T."
Now showing items 21-40 of 43
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Article
Dynamic programming subject to total variation distance ambiguity
Tzortzis, I.; Charalambous, Charalambos D.; Charalambous, T. (2015)The aim of this paper is to address optimality of stochastic control strategies via dynamic programming subject to total variation distance ambiguity on the conditional distribution of the controlled process. We formulate ...
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Conference Object
Dynamic programming with total variational distance uncertainty
Charalambous, Charalambos D.; Tzortzis, I.; Charalambous, T. (2012)The aim of this paper is to address optimality of stochastic control strategies via dynamic programming subject to total variational distance uncertainty on the conditional distribution of the controlled process. Utilizing ...
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Conference Object
Extremum problems with total variation distance
Charalambous, Charalambos D.; Tzortzis, I.; Loyka, S.; Charalambous, T. (Institute of Electrical and Electronics Engineers Inc., 2013)The aim of this paper is to investigate extremum problems with pay-off the total variational distance metric subject to linear functional constraints both defined on the space of probability measures, as well as related ...
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Article
Extremum problems with total variation distance and their applications
Charalambous, Charalambos D.; Tzortzis, I.; Loyka, S.; Charalambous, T. (2014)The aim of this paper is to investigate extremum problems with pay-off being the total variation distance metric defined on the space of probability measures, subject to linear functional constraints on the space of ...
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Conference Object
Filtering with fidelity for time-varying Gauss-Markov processes
Stavrou, P. A.; Charalambous, T.; Charalambous, Charalambos D. (Institute of Electrical and Electronics Engineers Inc., 2016)In this paper, we revisit the relation between Nonanticipative Rate Distortion (NRD) theory and real-time realizable filtering theory. Specifically, we give the closed form expression for the optimal nonstationary ...
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Conference Object
Hybrid cooperation through full-duplex opportunistic relaying and max-link relay selection with transmit power adaptation
Nomikos, N.; Charalambous, T.; Krikidis, Ioannis A.; Vouyioukas, D.; Johansson, M. (2014)
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Conference Object
Infinite horizon average cost dynamic programming subject to ambiguity on conditional distribution
Tzortzis, I.; Charalambous, Charalambos D.; Charalambous, T. (Institute of Electrical and Electronics Engineers Inc., 2015)This paper addresses the optimality of stochastic control strategies based on the infinite horizon average cost criterion, subject to total variation distance ambiguity on the conditional distribution of the controlled ...
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Conference Object
Infinite horizon discounted dynamic programming subject to total variation ambiguity on conditional distribution
Tzortzis, I.; Charalambous, Charalambos D.; Charalambous, T. (Institute of Electrical and Electronics Engineers Inc., 2016)We analyze the infinite horizon minimax discounted cost Markov Control Model (MCM), for a class of controlled process conditional distributions, which belong to a ball, with respect to total variation distance metric, ...
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Article
Joint relay-pair selection for buffer-aided successive opportunistic relaying
Nomikos, N.; Vouyioukas, D.; Charalambous, T.; Krikidis, Ioannis A.; Makris, P.; Skoutas, D. N.; Johansson, M.; Skianis, C. (2014)
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Conference Object
Lossless coding with generalized criteria
Charalambous, T.; Charalambous, Charalambos D.; Rezaei, F. (2011)This paper presents prefix codes which minimize various criteria constructed as a convex combination of maximum codeword length and average codeword length, or, a convex combination of the average of an exponential function ...
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Conference Object
Medium access control via contention-based distributed power control
Charalambous, T.; Krikidis, Ioannis A. (2012)
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Article
Modeling buffer-aided relay selection in networks with direct transmission capability
Charalambous, T.; Nomikos, N.; Krikidis, Ioannis A.; Vouyioukas, D.; Johansson, M. (2015)
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Conference Object
Opportunistic relay selection for cooperative networks with buffers
Krikidis, Ioannis A.; Charalambous, T.; Thompson, J. S. (2012)
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Article
Optimal merging algorithms for lossless codes with generalized criteria
Charalambous, T.; Charalambous, Charalambos D.; Rezaei, F. (2014)This paper presents lossless prefix codes optimized with respect to a payoff criterion consisting of a convex combination of maximum codeword length and average codeword length. The optimal codeword lengths obtained are ...
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Conference Object
Precoding decision for full-duplex X-relay channel with Decode-And-Forward
Charalambous, T.; Krikidis, Ioannis A.; Johansson, M. (2014)
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Conference Object
Robust Linear Quadratic Regulator for uncertain systems
Tzortzis, I.; Charalambous, Charalambos D.; Charalambous, T.; Kourtellaris, C. K.; Hadjicostis, Christoforos N. (Institute of Electrical and Electronics Engineers Inc., 2016)This paper develops a Linear Quadratic Regulator (LQR), which is robust to disturbance variability, by using the total variation distance as a metric. The robust LQR problem is formulated as a minimax optimization problem, ...
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Conference Object
Robust Linear Quadratic Regulator for uncertain systems
Tzortzis, I.; Charalambous, C. D.; Charalambous, T.; Kourtellaris, C. K.; Hadjicostis, Christoforos N. (Institute of Electrical and Electronics Engineers Inc., 2016)This paper develops a Linear Quadratic Regulator (LQR), which is robust to disturbance variability, by using the total variation distance as a metric. The robust LQR problem is formulated as a minimax optimization problem, ...
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Article
Stability analysis and power optimization for energy harvesting cooperative networks
Krikidis, Ioannis A.; Charalambous, T.; Thompson, J. S. (2012)
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Article
A Survey on Buffer-Aided Relay Selection
Nomikos, N.; Charalambous, T.; Krikidis, Ioannis A.; Skoutas, D. N.; Vouyioukas, D.; Johansson, M.; Skianis, C. (2016)
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Conference Object
Team optimality conditions of differential decision systems with nonclasssical information structures
Charalambous, C. D.; Charalambous, T.; Hadjicostis, Christoforos N. (Institute of Electrical and Electronics Engineers Inc., 2014)We derive team optimality conditions for differential decision systems with nonclassical information structures. The necessary conditions of optimality are given in terms of Hamiltonian system of equations consisting of a ...