Profils utilisateurs correspondant à "Christos K. Kourtellaris"

Christos K. Kourtellaris

Officer of Electronic Communications, DEC - DMRID, Cyprus
Adresse e-mail validée de ucy.ac.cy
Cité 424 fois

Robust linear quadratic regulator for uncertain systems

…, T Charalambous, CK Kourtellaris… - 2016 IEEE 55th …, 2016 - ieeexplore.ieee.org
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 …

Sequential necessary and sufficient conditions for capacity achieving distributions of channels with memory and feedback

…, CD Charalambous, CK Kourtellaris - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
We derive sequential necessary and sufficient conditions for any channel input conditional
distribution P 0,n =Δ {P Xt|Xt-1,Yt-1 : t = 0, ..., n} to maximize the finite-time horizon directed …

Finite blocklength analysis of multiple access channels with/without cooperation

CK Kourtellaris, C Psomas… - IEEE Transactions on …, 2020 - ieeexplore.ieee.org
Motivated by the demand of reliable and finite blocklength communications, we employ tools
from information theory, stochastic processes and queueing theory, in order to provide a …

Nonanticipative transmission for sources and channels with memory

CK Kourtellaris, CD Charalambous… - … on Information Theory …, 2015 - ieeexplore.ieee.org
In this paper we analyze nonanticipative (delayless) transmission of source symbols with
memory over channels with memory (with and without feedback). We employ duality of {source, …

Information transfer of control strategies: Dualities of stochastic optimal control theory and feedback capacity of information theory

CD Charalambous, CK Kourtellaris… - IEEE Transactions on …, 2017 - ieeexplore.ieee.org
The control-coding capacity of stochastic control systems is introduced, and its operational
meaning is established using randomized control strategies, which simultaneously control …

Information nonanticipative rate distortion function and its applications

PA Stavrou, CK Kourtellaris… - Coordination Control of …, 2015 - Springer
In this chapter, we introduce the information nonanticipative rate distortion function (RDF), and
we compare it with the classical information RDF, identifying certain limitations of the later, …

Capacity achieving distributions and separation principle for feedback Gaussian channels with memory: The LQG theory of directed information

CD Charalambous, CK Kourtellaris… - IEEE Transactions on …, 2018 - ieeexplore.ieee.org
A method is developed to realize optimal channel input conditional distributions, which
maximize the finite transmission feedback information (FTFI) capacity, often called $n$ -block …

Capacity of binary state symmetric channel with and without feedback and transmission cost

CK Kourtellaris… - 2015 IEEE Information …, 2015 - ieeexplore.ieee.org
We consider a unit memory channel, called Binary State Symmetric Channel (BSSC), in
which the channel state is the modulo2 addition of the current channel input and the previous …

Directed information on abstract spaces: properties and extremum problems

…, PA Stavrou, CK Kourtellaris - Coordination Control of …, 2014 - Springer
Directed information is an information theoretic measure which accounts for the direction of
information flow over causal systems with feedback, such as network communication and …

Optimal Control and Signaling Strategies of Control-Coding Capacity of General Decision Models: Applications to Gaussian Models and Decentralized Strategies

CD Charalambous, CK Kourtellaris, I Tzortzis - SIAM Journal on Control and …, 2024 - SIAM
We investigate the control-coding (CC) capacity of general dynamical decision models (DMs)
that involve nonlinear filtering, which is absent in the specific DMs investigated in [CK …