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Browsing by Subject "Directed information"

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    • Conference Object  

      Capacity of channels with memory and feedback: Encoder properties and dynamic programming 

      Charalambous, Charalambos D.; Kourtellaris, C. K.; Hadjicostis, Christoforos N. (2010)
      This paper is concerned with capacity formulae for channels with memory and feedback, properties of the capacity achieving encoder, and dynamic programming for designing optimal encoders. The source is general and the ...

    • Conference Object  

      Capacity of channels with memory and feedback: Encoder properties and dynamic programming 

      Charalambous, C. D.; Kourtellaris, C. K.; Hadjicostis, Christoforos N. (2010)
      This paper is concerned with capacity formulae for channels with memory and feedback, properties of the capacity achieving encoder, and dynamic programming for designing optimal encoders. The source is general and the ...

    • Conference Object  

      Directed information on abstract spaces: Properties and extremum problems 

      Charalambous, Charalambos D.; Stavrou, P. A. (2012)
      This paper describes a framework in which directed information is defined on abstract spaces. The framework is employed to derive properties of directed information such as convexity, concavity, lower semicontinuity, by ...

    • Article  

      Directed Information on Abstract Spaces: Properties and Variational Equalities 

      Charalambous, Charalambos D.; Stavrou, P. (2016)
      Directed information or its variants are utilized extensively in the characterization of the capacity of channels with memory and feedback, nonanticipative lossy data compression, and their generalizations to networks. In ...

    • Article  

      Information Structures for Feedback Capacity of Channels with Memory and Transmission Cost: Stochastic Optimal Control & Variational Equalities 

      Kourtellaris, C. K.; Charalambous, Charalambos D. (2017)
      The Finite Transmission Feedback Information (FTFI) capacity is characterized for any class of channel conditional distributions PBi|Bi-1, Ai and P Bi|Bi-1 i-M, Ai, where M is the memory of the channel, Bi ? {B-1, B0,..., ...

    • Conference Object  

      Information structures of capacity achieving distribution for channels with memory and feedback 

      Kourtellaris, C. K.; Charalambous, Charalambos D. (Institute of Electrical and Electronics Engineers Inc., 2016)
      The information structures of the optimal channel input distributions P[0,n] t {PAi|Ai-1,Bi-1 : i = 0,1.,n}, which correspond to the extremum problem of feedback capacity equation are identified, for any class of channel ...

    • Article  

      Information Transfer of Control Strategies: Dualities of Stochastic Optimal Control Theory and Feedback Capacity of Information Theory 

      Charalambous, Charalambos D.; Kourtellaris, C. K.; Tzortzis, I. (2017)
      The control-coding capacity of stochastic control systems is introduced, and its operational meaning is established using randomized control strategies, which simultaneously control output processes encode information, and ...

    • Conference Object  

      On the relation of nonanticipative rate distortion function and filtering theory 

      Charalambous, Charalambos D.; Stavrou, P. A. (2013)
      In this paper the relation between nonanticipative rate distortion function (RDF) and Bayesian filtering theory is investigated using the topology of weak convergence of probability measures on Polish spaces. The relation ...

    • Conference Object  

      Optimal encoder and control strategies in stochastic control subject to rate constraints for channels with memory and feedback 

      Charalambous, Charalambos D.; Kourtellaris, C. K.; Hadjicostis, Christoforos N. (2011)
      This paper is concerned with the joint design of encoder/control strategies which minimize a control payoff subject to a rate constraint on the feedback information provided by the system. The control system is described ...

    • Conference Object  

      Optimal encoder and control strategies in stochastic control subject to rate constraints for channels with memory and feedback 

      Charalambous, C. D.; Kourtellaris, C. K.; Hadjicostis, Christoforos N. (2011)
      This paper is concerned with the joint design of encoder/control strategies which minimize a control payoff subject to a rate constraint on the feedback information provided by the system. The control system is described ...

    • Conference Object  

      Optimal encoders maximizing directed information of channels with memory and feedback: Stochastic control and dynamic programming 

      Charalambous, Charalambos D.; Kourtellaris, C. K.; Hadjicostis, Christoforos N. (2011)
      This paper is concerned with the stochastic control formulation of the capacity of channel with memory and feedback. The pay-off is the directed information from the source sequence to the channel output sequence, while ...

    • Conference Object  

      Optimal encoders maximizing directed information of channels with memory and feedback: Stochastic control and dynamic programming 

      Charalambous, C. D.; Kourtellaris, C. K.; Hadjicostis, Christoforos N. (2011)
      This paper is concerned with the stochastic control formulation of the capacity of channel with memory and feedback. The pay-off is the directed information from the source sequence to the channel output sequence, while ...

    • Conference Object  

      Optimization of directed information and relations to filtering theory 

      Charalambous, Charalambos D.; Stavrou, P. A. (Institute of Electrical and Electronics Engineers Inc., 2014)
      In this paper we generalize the relation between nonanticipative Rate Distortion Function (RDF) and filtering theory, to processes which are affected by the reproduction process, by utilizing the topology of weak convergence ...

    • Conference Object  

      Rate distortion function with causal decoding 

      Charalambous, Charalambos D.; Kourtellaris, C. K.; Stavrou, P. A. (2010)
      This paper considers source coding of general sources with memory, when causal feedback is available at the decoder. The rate distortion function is defined as the infimum of the so-called directed information over causal ...

    • Article  

      Sequential Necessary and Sufficient Conditions for Capacity Achieving Distributions of Channels with Memory and Feedback 

      Stavrou, P. A.; Charalambous, Charalambos D.; Kourtellaris, C. K. (2017)
      We derive sequential necessary and sufficient conditions for any channel input conditional distribution P0,n δ {PXt |Xt?1,Yt?1 : T = 0, . . . , n} to maximize the finite-Time horizon directed information defined by CFB ...

    • Conference Object  

      Stochastic control over finite capacity channels: Causality and feedback 

      Charalambous, Charalambos D.; Kourtellaris, C. K.; Stavrou, P. (Institute of Electrical and Electronics Engineers Inc., 2014)
      Optimal communication/control analysis and design of dynamical controlled systems, when there are finite capacity communication constraints often involve information and control theoretic analysis. This paper, employees ...

    • Conference Object  

      Variational equalities of directed information and applications 

      Stavrou, P. A.; Charalambous, Charalambos D. (2013)
      In this paper we introduce two variational equalities of directed information, which are analogous to those of mutual information employed in the Blahut-Arimoto Algorithm (BAA). Subsequently, we introduce nonanticipative ...

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