Themistoklis Charalambous

Assistant Professor at Aalto University School of Business

Schools

  • Aalto University School of Business

Links

Biography

Aalto University School of Business

His research involves distributed coordination and control, distributed decision making, and control to various resource allocation problems in complex and networked systems.

BACKGROUND

Themistoklis Charalambous received his B.A. and M.Eng. in Electrical and Information Sciences from Cambridge University in 2005. He pursued his Ph.D. in the Control Laboratory, of the Engineering Department, Cambridge University in 2010. He worked as a research associate at Imperial College London, as a Visiting Lecturer at the Department of Electrical and Computer Engineering, University of Cyprus, and as a post-doctoral researcher at the Automatic Control Lab of the School of Electrical Engineering at the Royal Institute of Technology (KTH) and at the Department of Signals and Systems at Chalmers University of Technology. He is currently an Assistant Professor at the Department of Electrical Engineering and Automation at Aalto University.

Peer-reviewed scientific articles

Journal article-refereed, Original research

Network traffic flow optimization under performance constraints

Csikós, Alfréd; Charalambous, Themistoklis; Farhadi, Hamed; Kulcsár, Balázs; Wymeersch, Henk
2017 in TRANSPORTATION RESEARCH PART C: EMERGING TECHNOLOGIES (Elsevier Limited)
ISSN: 0968-090X

Approximation of Markov Processes by Lower Dimensional Processes via Total Variation Metrics

Tzortzis, Ioannis; Charalambous, Charalambos D.; Charalambous, Themistoklis; Hadjicostis, Christoforos N.; Johansson, Mikael
2017 in IEEE TRANSACTIONS ON AUTOMATIC CONTROL (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 0018-9286

Distributed Finite-Time Computation of Digraph Parameters Left-Eigenvector, Out-Degree and Spectrum

Charalambous, Themistoklis; Rabbat, Michael G.; Johansson, Mikael; Hadjicostis, Christoforos N.
2016 in IEEE Transactions on Control of Network Systems (Institute of Electrical and Electronics Engineers)
ISSN: 2325-5870

How variability and effort determine coordination at large forces

Kolossiatis, Michalis; Charalambous, Themistoklis; Burdet, Etienne
2016 in PLOS ONE (PUBLIC LIBRARY SCIENCE)
ISSN: 1932-6203

A Survey on Buffer-Aided Relay Selection

Nomikos, Nikolaos; Charalambous, Themistoklis; Krikidis, Ioannis; Skoutas, Dimitrios N.; Vouyioukas, Demosthenes; Johansson, Mikael; Skianis, Charalabos
2016 in IEEE COMMUNICATIONS SURVEYS AND TUTORIALS (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 1553-877X

Optimal Radio Frequency Energy Harvesting with Limited Energy Arrival Knowledge

Zou, Zhenhua; Gidmark, Anders; Charalambous, Themistoklis; Johansson, Mikael
2016 in IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 0733-8716

Distributed Finite-Time Average Consensus in Digraphs in the Presence of Time Delays

Charalambous, Themistoklis; Yuan, Ye; Yang, Tao; Pan, Wei; Hadjicostis, Christoforos N.; Johansson, Mikael
2015 in IEEE Transactions on Control of Network Systems (Institute of Electrical and Electronics Engineers)
ISSN: 2325-5870

Modeling buffer-aided relay selection in networks with direct transmission capability

Charalambous, Themistoklis; Nomikos, Nikolaos; Krikidis, Ioannis; Vouyioukas, Demosthenes; Johansson, Mikael
2015 in IEEE COMMUNICATIONS LETTERS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1089-7798

On the minimum latency transmission scheduling in wireless networks with power control under SINR constraints

Charalambous, T.; Klerides, E.; Wiesemann, W.; Vassiliou, A.; Hadjitheophanous, S.; Deliparaschos, K. M.
2015 in TRANSACTIONS ON EMERGING TELECOMMUNICATIONS TECHNOLOGIES (John Wiley and Sons Ltd)
ISSN: 2161-5748

A buffer-aided successive opportunistic relay selection scheme with power adaptation and inter-relay interference cancellation for cooperative diversity systems

Nomikos, Nikolaos; Charalambous, Themistoklis; Krikidis, Ioannis; Skoutas, Dimitrios N.; Vouyioukas, Demosthenes; Johansson, Mikael
2015 in IEEE TRANSACTIONS ON COMMUNICATIONS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 0090-6778

Dynamic programming subject to total variation distance ambiguity

Tzortzis, Ioannis; Charalambous, Charalambos D.; Charalambous, Themistoklis
2015 in SIAM JOURNAL ON CONTROL AND OPTIMIZATION (Society for Industrial and Applied Mathematics Publications)
ISSN: 0363-0129

Extremum problems with total variation distance and their applications

Charalambous, Charalambos D.; Tzortzis, Ioannis; Loyka, Sergey; Charalambous, Themistoklis
2014 in IEEE TRANSACTIONS ON AUTOMATIC CONTROL (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 0018-9286

Optimal merging algorithms for lossless codes with generalized criteria

Charalambous, Themistoklis; Charalambous, Charalambos D.; Rezaei, Farzad
2014 in IEEE Transactions on information theory (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 0018-9448

Exponential stability of homogeneous positive systems of degree one with time-varying delays

Feyzmahdavian, Hamid Reza; Charalambous, Themistoklis; Johansson, Mikael
2014 in IEEE TRANSACTIONS ON AUTOMATIC CONTROL (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 0018-9286

Stability and performance of continuous-time power control in wireless networks

Feyzmahdavian, Hamid Reza; Charalambous, Themistoklis; Johansson, Mikael
2014 in IEEE TRANSACTIONS ON AUTOMATIC CONTROL (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 0018-9286

Asymptotic stability and decay rates of homogeneous positive systems with bounded and unbounded delays

Feyzmahdavian, Hamid Reza; Charalambous, Themistoklis; Johansson, Mikael
2014 in SIAM JOURNAL ON CONTROL AND OPTIMIZATION (Society for Industrial and Applied Mathematics Publications)
ISSN: 0363-0129

Average consensus in the presence of delays in directed graph topologies

Hadjicostis, Christoforos N.; Charalambous, Themistoklis
2014 in IEEE TRANSACTIONS ON AUTOMATIC CONTROL (Institute of Electrical and Electronics Engineers Inc.)
ISSN: 0018-9286

Adaptive resource provisioning for virtualized servers using kalman filters

Kalyvianaki, Evangelia; Charalambous, Themistoklis; Hand, Steven
2014 in ACM TRANSACTIONS ON AUTONOMOUS AND ADAPTIVE SYSTEMS (Association for Computing Machinery (ACM))
ISSN: 1556-4665

Joint relay-pair selection for buffer-aided successive opportunistic relaying

Nomikos, N.; Vouyioukas, D.; Charalambous, T.; Krikidis, I.; Makris, P.; Skoutas, D. N.; Johansson, M.; Skianis, C.
2014 in TRANSACTIONS ON EMERGING TELECOMMUNICATIONS TECHNOLOGIES (John Wiley and Sons Ltd)
ISSN: 2161-5748

Distributed weight balancing over digraphs

Rikos, Apostolos I.; Charalambous, Themistoklis; Hadjicostis, Christoforos N.
2014 in IEEE Transactions on Control of Network Systems (Institute of Electrical and Electronics Engineers)
ISSN: 2325-5870

Contractive interference functions and rates of convergence of distributed power control laws

Feyzmahdavian, Hamid Reza; Johansson, Mikael; Charalambous, Themistoklis
2012 in IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1536-1276

A Framework to Describe, Analyze and Generate Interactive Motor Behaviors

Jarrassé, Nathanaël; Charalambous, Themistoklis; Burdet, Etienne
2012 in PLOS ONE (PUBLIC LIBRARY SCIENCE)
ISSN: 1932-6203

Buffer-aided relay selection for cooperative diversity systems without delay constraints

Krikidis, Ioannis; Charalambous, Themistoklis; Thompson, John S.
2012 in IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1536-1276

Stability analysis and power optimization for energy harvesting cooperative networks

Krikidis, Ioannis; Charalambous, Themistoklis; Thompson, John S.
2012 in IEEE SIGNAL PROCESSING LETTERS (IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC)
ISSN: 1070-9908

Unconditional stability of the Foschini-Miljanic algorithm

Zappavigna, Annalisa; Charalambous, Themistoklis; Knorn, Florian
2012 in AUTOMATICA (Elsevier Limited)
ISSN: 0005-1098

Resource Provisioning for Multi-Tier Virtualized Server Applications

Kalyvianaki, Evangelia; Charalambous, Themistoklis; Hand, Steven
2010 in CMG Journal (Computer Measurement Group (C M G))

Book section, Chapters in research books

Power control in wireless ad hoc networks Stability and convergence under uncertainties

Charalambous, Themistoklis
2013 in Springer Optimization and Its Applications (SPRINGER)
ISBN: 978-1-4614-5130-3
ISSN: 1931-6828

Conference proceedings

Traffic flow optimization with QoS constrained network admission control

Csikós, Alfréd; Farhadi, Hamed; Kulcsár, Balázs; Charalambous, Themistoklis; Wymeersch, Henk
2017 in IFAC-PapersOnLine (Elsevier)
ISSN: 2405-8963

LoCo-Link: A Low-Complexity Link Selection Algorithm for Delay Mitigation in Asymmetric Two-Hop Networks

Nomikos, Nikolaos; Charalambous, Themistoklis; Vouyioukas, Demosthenes; Karagiannidis, George K.
2017 in IEEE International Conference on Communications (IEEE)
ISSN: 1550-3607

Totally asynchronous distributed estimation of eigenvector centrality in digraphs with application to the PageRank problem

Charalambous, Themistoklis; Hadjicostis, Christoforos N.; Rabbat, Michael G.; Johansson, Mikael
2016
ISBN: 9781509018376

On the use of Fuzzy Logic Controllers to Comply with Virtualized Application Demands in the Cloud

Deliparaschos, Kyriakos M.; Charalambous, Themistoklis; Kalyvianaki, Evangelia; Makarounas, Christos
2016
ISBN: 978-1-5090-2591-6

Delay-independent stability of cone-invariant monotone systems

Feyzmahdavian, Hamid Reza; Charalambous, Themistoklis; Johansson, Mikael
2016
ISBN: 9781479978861

Fast Information Exchange in Proximity-Based Multichannel Wireless Networks

Gonga, Antonio; Charalambous, Themistoklis; Johansson, Mikael
2016
ISBN: 9781509003518

A delay-aware hybrid relay selection policy

Poulimeneas, Dimitrios; Charalambous, Themistoklis; Nomikos, Nikolaos; Krikidis, Ioannis; Vouyioukas, Demosthenes; Johansson, Mikael
2016
ISBN: 9781509019908

Delay-and diversity-Aware buffer-Aided relay selection policies in cooperative networks

Poulimeneas, Dimitrios; Charalambous, Themistoklis; Nomikos, Nikos; Krikidis, Ioannis; Vouyioukas, Demosthenes; Johansson, Mikael
2016
ISBN: 9781467398145

Filtering with fidelity for time-varying Gauss-Markov processes

Stavrou, Photios A.; Charalambous, Themistoklis; Charalambous, Charalambos D.
2016
ISBN: 9781509018376

Infinite horizon average cost dynamic programming subject to ambiguity on conditional distribution

Tzortzis, Ioannis; Charalambous, Charalambos D.; Charalambous, Themistoklis
2016
ISBN: 9781479978861

Infinite horizon discounted dynamic programming subject to total variation ambiguity on conditional distribution

Tzortzis, Ioannis; Charalambous, Charalambos D.; Charalambous, Themistoklis
2016
ISBN: 9781509018376

Robust Linear Quadratic Regulator for uncertain systems

Tzortzis, Ioannis; Charalambous, Charalambos D.; Charalambous, Themistoklis; Kourtellaris, Christos K.; Hadjicostis, Christoforos N.
2016
ISBN: 9781509018376

Team optimality conditions of differential decision systems with nonclasssical information structures

Charalambous, Charalambos D.; Charalambous, Themistoklis; Hadjicostis, Christoforos N.
2014
ISBN: 9783952426913

Distributed minimum-time weight balancing over digraphs

Charalambous, Themistoklis; Hadjicostis, Christoforos N.; Johansson, Mikael
2014
ISBN: 9781479928903

Average Consensus in the Presence of Dynamically Changing Directed Topologies and Time Delays

Charalambous, Themistoklis; Hadjicostis, Christoforos N.
2014
ISBN: 978-1-4799-7746-8

Precoding decision for full-duplex X-relay channel with Decode-And-Forward

Charalambous, Themistoklis; Krikidis, Ioannis; Johansson, Mikael
2014
ISBN: 9781479909599

Reduced power expenditure in the minimum latency transmission scheduling problem

Deliparaschos, Kyriakos M.; Charalambous, Themistoklis; Christodoulides, Paul; Klerides, Evelina
2014
ISBN: 9781479928903

Sub-Homogeneous Cooperative Systems are Insensitive to Bounded Time-Varying Delays

Feyzmahdavian, Hamid Reza; Charalambous, Themistoklis; Johansson, Mikael
2014

Hybrid cooperation through full-duplex opportunistic relaying and max-link relay selection with transmit power adaptation

Nomikos, Nikolaos; Charalambous, Themistoklis; Krikidis, Ioannis; Vouyioukas, Demosthenes; Johansson, Mikael
2014
ISBN: 9781479920037

Approximation of Markov Processes by Lower Dimensional Processes

Tzortzis, Ioannis; Charalambous, Charalambos D.; Charalambous, Themistoklis; Hadjicostis, Christoforos N.; Johansson, Mikael
2014
ISBN: 978-1-4673-6090-6

Distributed Offline Load Balancing in MapReduce Networks

Charalambous, Themistoklis; Kalyvianaki, Evangelia; Hadjieostis, Christoforos N.; Johansson, Mikael
2013 in IEEE Conference on Decision and Control (IEEE)
ISBN: 978-1-4673-5714-2
ISSN: 0743-1546

Extremum problems with total variation distance

Charalambous, Charalambos D.; Tzortzis, Ioannis; Loyka, Sergey; Charalambous, Themistoklis
2013
ISBN: 9781467357173

Distributed formation of balanced and bistochastic weighted digraphs in multi-agent systems

Charalambous, Themistoklis; Hadjicostis, Christoforos N.
2013
ISBN: 9783033039629

Decentralised minimum-time average consensus in digraphs

Charalambous, Themistoklis; Yuan, Ye; Yang, Tao; Pan, Wei; Hadjicostis, Christoforos N.; Johansson, Michael
2013
ISBN: 9781467357173

Asymptotic and Exponential Stability of a General Class of Continuous-Time Power Control Laws in Wireless Networks

Feyzmahdavian, Hamid Reza; Charalambous, Themistoklis; Johansson, Mikael
2013
ISBN: 978-1-4673-5714-2

Asymptotic stability and decay rates of positive linear systems with unbounded delays

Feyzmahdavian, Hamid Reza; Charalambous, Themistoklis; Johansson, Mikael
2013
ISBN: 9781467357173

On the rate of convergence of continuous-time linear positive systems with heterogeneous time-varying delays

Feyzmahdavian, Hamid Reza; Charalambous, Themistoklis; Johansson, Mikael
2013
ISBN: 9783033039629

Neighbor discovery in multichannel wireless clique networks An epidemic approach

Gonga, Antonio; Charalambous, Themistoklis; Johansson, Mikael
2013 in IEEE International Conference on Mobile Ad-hoc and Sensor Systems (IEEE)
ISBN: 9780768551043
ISSN: 2155-6806

Capacity improvement through buffer-aided successive opportunistic relaying

Nomikos, N.; Vouyioukas, D.; Charalambous, T.; Krikidis, I.; Skoutas, D. N.; Johansson, M.
2013
ISBN: 9781479902392

Buffer-aided successive opportunistic relaying with inter-relay interference cancellation

Nomikos, Nikolaos; Charalambous, Themistoklis; Krikidis, Ioannis; Skoutas, Dimitrios N.; Vouyioukas, Demosthenes; Johansson, Mikael
2013
ISBN: 9781467362351

Dynamic programming with total variational distance uncertainty

Charalambous, Charalambos D.; Tzortzis, Ioannis; Charalambous, Themistoklis
2012
ISBN: 978-1-4673-2065-8

Medium access control via contention-based distributed power control

Charalambous, Themistoklis; Krikidis, Ioannis
2012
ISBN: 9781457713781

Contractive interference functions and rates of convergence of distributed power control laws

Feyzmahdavian, Hamid Reza; Johansson, Mikael; Charalambous, Themistoklis
2012
ISBN: 9781457720529

Overload Management in Data Stream Processing Systems with Latency Guarantees

Kalyvianaki, Evangelia; Charalambous, Themistoklis; Fiscato, Marco; Pietzuch, Peter
2012

Opportunistic relay selection for cooperative networks with buffers

Krikidis, Ioannis; Charalambous, Themistoklis; Thompson, John S.
2012
ISBN: 9781457720529

Distributed network size estimation and average degree estimation and control in networks isomorphic to directed graphs

Shames, Iman; Charalambous, Themistoklis; Hadjicostis, Christoforos N.; Johansson, Mikael
2012
ISBN: 9781467345385

Towards distributed transmission scheduling for wireless ad hoc networks

Vassiliou, Angelos; Charalambous, Themistoklis; Krikidis, Ioannis; Klerides, Evelina
2012
ISBN: 9781457713781

Lossless coding with generalized criteria

Charalambous, Themistoklis; Charalambous, Charalambos D.; Rezaei, Farzad
2011
ISBN: 9781457705953

Asynchronous coordination of distributed energy resources for the provisioning of ancillary services

Hadjicostis, Christoforos N.; Charalambous, Themistoklis
2011
ISBN: 9781457718168

A Min-Max Framework for CPU Resource Provisioning in Virtualized Servers using H-infinity Filters

Charalambous, Themistoklis; Kalyvianaki, Evangelia
2010 in IEEE Conference on Decision and Control (IEEE)
ISBN: 978-1-4244-7746-3
ISSN: 0743-1546

On the stability of a power control algorithm for wireless networks in the presence of time-varying delays

Charalambous, Themistoklis; Ariba, Yassine
2009
ISBN: 9783952417393

Self-adaptive and self-configured CPU resource provisioning for virtualized servers using Kalman filters

Kalyvianaki, Evangelia; Charalambous, Themistoklis; Hand, Steven
2009
ISBN: 9781605585642

Transmission scheduling in wireless networks with SINR constraints

Klerides, Evelina; Charalambous, Themistoklis
2009
ISBN: 9780769535869

On the stability of the Foschini-Miljanic algorithm with time-delays

Charalambous, Themistoklis; Lestas, Ioannis; Vinnicombe, Glenn
2008
ISBN: 9781424431243

Applying Kalman Filters to Dynamic Resource Provisioning of Virtualized Server Applications

Kalyvianaki, Evangelia; Charalambous, Themistoklis; Hand, Steven
2008

On Dynamic Resource Provisioning for Consolidated Servers in Virtual Data Centers

Kalyvianaki, Evangelia; Charalambous, Themistoklis
2007

Theses

Doctoral Thesis, monography

Power control in Wireless Ad-Hoc Networks

Charalambous, Themistoklis
2010

On the Transmission Scheduling of Wireless Networks under SINR Constraints

Charalambous, Themistoklis; Klerides, Evelina; Wiesemann, W.
2010

A Lyapunov Krasovskii method for the stability of the Foschini-Miljanic algorithm under time-varying delays: An Independent of Delays approach

Charalambous, Themistoklis
2010

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