Imperial College London


Faculty of EngineeringDepartment of Electrical and Electronic Engineering

Professor in the Dennis Gabor Chair, Head of ISN



+44 (0)20 7594 6342e.gelenbe Website




EE Bldg Rm 1009Sherfield BuildingSouth Kensington Campus





Erol Gelenbe, FACM, FIEEE, FIET, Head of Intelligent Systems and Networks (ISN), in the Department of Electrical and Electronic Engineering at Imperial College, Londonis a Fellow of the Royal Academy of Sciences, Arts and Letters of Belgium, the Hungarian, Polish and Turkish Science Academies, and the National Academy of Technologies (Engineering) of France.

The REF 2014 evaluation of British Universities recognised the ISN group as having the highest proportion of "world leading outputs" in Imperial's EEE Dept., which in turn was Ranked 1st by REF 2014 in the field of Electrical & Electronic Engineering. 

Described by E&T Magazine as a "true IT Innovator", Erol won   IET's 2010 Oliver Lodge Medal. The  ACM SIGMETRICS 2008 Life-Time Achievement Award  stated that Erol is "the single individual who, over a span of 30 years, has made the greatest overall contribution to the field of Computer System and Network Performance Evaluation". Other science awards include:

- 2013 "In Memoriam Dennis Gabor Award" of the Hungarian Academy of Science for outstanding science with significant innovation content, from the Hungarian Academy of Sciences (Gabor was the 1971 Nobel Laureate in Physics). 

1996 France-Telecom Prize of the French Academy of Sciences,

- 1994 Parlar Foundation Science Award of Turkey.

Erol has invented and obtained exact solutions to new mathematical models such as G-Networks and the Random Neural Network. He has invented the Cognitive Packet Network, and the first Packet-Voice Network SYCOMORE. The team that he founded, trained and led in Paris, created the first Network Performance Analysis Package QNAP commercialised in Europe by INRIA's spin-off SIMULOG. He has over 14,300 citations with H=66.

For his services to higher education and research, he was awarded honours by several nations:

- Chevalier de la Legion d'Honneur (France, 2014), and Officier de l'Ordre du Merite (France, 2001), Chevalier des Palmes Academiques (France, 2003).

- Commendatore al Merito della Repubblica (Italy, 2005), and Grande Ufficiale dell'Ordine della Stella d'Italia (2007).

- Honorary Fellowships (Doctorate Honoris Causa) by the Universities of Liege (Belgium, 2006), Bogazici University - Istanbul (Turkey, 2004), and Rome II (Italy, 1996).

His current research addresses three related areas: 

-  "Autonomic" or self-aware and self-organising Software Defined Networks including the Cognitive Packet Network.

- Energy Savings in ICT, in the Cloud and through Energy Harvesting for sensors in the Internet of Things (IoT)

- Security in mobile networks; he is the coordinator (PI) the EU FP7 Nemesys project - see also 

He also works on analytical solutions to networked systems in engineering, physics and biology, including energy networks, neural networks, genetic networks, sensor networks and economic agents in the Internet.

His publications in recent years appear in journals such as IEEE Networks, IEEE Trans. on Emerging Topics in Computing,  IEEE Access, IEEE Trans. on Cloud Computing, Communications of the ACM, the ACM Trans. on Sensor Networks, ACM Trans. on Internet Technology, Physical Review, Proceedings Royal Society, ACM Trans. on Adaptive and Autonomous Systems, IEEE/ACM Transactions on Bioinformtics and Computational Biology, IEEE Transactions on Nanobioscience, Neural Computation, The Computer Journal, etc.

 Previous positions:

- 1998-2003: Associate Dean of Engineering and Director of the School of Electrical Engineering and Computer Science at the University of Central Florida.  

- 1993-1998: Duke University, Head of Electrical and Computer Engineering and Nello L. Teer Chair Professor, with secondary appointments as Professor of Computer Science and Experimental Psychology.

- 1979-1993: Professor at the University of Paris and also taught at Ecole Polytechnique. In France, he created research groups in Computer and Network Performance Evaluation at INRIA, CNRS and French universities, founded two post-graduate programmes, introduced system and network performance evaluation methods to France Telecom, Bull, ONERA, invented fiber optics random access networks and multiprocessor packet switches, and developed methods that were incoprporated into commercial performance evaluation software packages such as QNAP2 and FLEXSIM.

- He was elected to his first Chair at the age of 27 at the University of Liege (Belgium).

Erol's new projects include ECROPS/EPSRC (2013-2016) which was ranked first in the 2012 CHIST-ERA competition,  EU FP7 NEMESYS (2012-2015) about mobile network security, EU FP7 PANACEA (2013-2016) on the resilient Cloud, and a MoD/DSTL project on energy optimisation (2012-2016). Recently completed projects include SATURN on Network Security (BT and the Technology Strategy Board), Fit4Green on Green ITC (EU FP7), EPSRC/KTN with MBDA UK Ltd, EPSRC Bridging the Gaps in Bioinformatics, (5) ALADDIN on Distributed Data and Decision Systems (BAE Systems and EPSRC), and EU FP7 DIESIS on Distributed Simulation of Critical Infrastructures. He teaches a post-graduate course on the performance of distributed systems and networks. For recent publications see: and

Erol served as Science and Technology Advisor to the French Minister of Universities (1984-86). In 1982 he created a voluntary programme to provide Computer Technology education to unemployed people (Programme VFI) in France that served some 17,000 trainees over several years with the help of engineering and computer science graduates.  He serves on the board of several journals such as Acta Informatica, and Performance Evaluation. Previous editorial boards include the Proceedings of the Royal Society (2006-2011), Proceedings IEEE (1994-1998), and The Computer Journal (2008-2012).

Specific Details: Prof. Erol Gelenbe works on computer and network system performance evaluation methods and tools, and his work was incorporated into the QNAP2 commercial software package, and the design of FLEXSIM a commercial flexible manufacturing system simulator. He has introduced new queueing models with product form solution known as G-networks. He currently designs novel distributed systems and networks, including energy saving self-improving and self-healing packet networks. His laboratory includes a large scale wired network test-bed, an ad hoc wireless network that incorporates power aware routing, wireless sensor networks, and a large scale distributed simulation tool DBES for emergency management. Recent industry collaborations include BT, BAE Systems, GD UK Ltd, QinetiQ, MBDA, Northrup-Grumman, Telecom Italia. 

Erol also introduced new computational models of biological systems, including the "Random Neural Network" and a probability model for Gene Regulatory Networks which includes temporal effects. More broadly, he researches probability models inspired by computer science, economics, biology and physics. The "Random Neural Network " has resulted in a patented technique for anomaly detection in Magnetic Resonance Images of the brain, and in the patented CPN algorithm for QoS routing in "autonomic" or self-aware adaptive networks (, and in two patents filed for distributed real-time decision making. Some of his recent work analyses the time that it takes to "search" when one has imperfect or wrong information about the location of the object that is being sought; this is relevant to wireless networks, to robotics and optimisation.

His early work contributed seminal results on the performance and implementation of random access multi-user communications and fibre networks, diffusion models of multi programming systems, adaptive performance of virtual memory systems, optimum checkpoints in databases, and the performance of database operations. 

Please see:

Royal Academy of Sciences, Arts and Letters of Belgium

French National Academy of Engineering

Hungarian Academy of Sciences 

Polish Academy of Sciences

Turkish Science Academy

Academia Europaea


Gelenbe E, Ceran E, 2016, Energy Packet Networks with Energy Harvesting, Ieee Access, Pages:1-1

Brun O, Wang L, Gelenbe E, 2016, Big Data for Autonomic Intercontinental Overlays, Ieee Journal On Selected Areas In Communications, Vol:34, ISSN:0733-8716, Pages:575-583

Gelenbe E, 2015, Errors and Power When Communicating With Spins, Ieee Transactions On Emerging Topics In Computing, Vol:3, Pages:483-488

Gelenbe E, 2015, Synchronising Energy Harvesting and Data Packets in a Wireless Sensor, Energies, Vol:8, ISSN:1996-1073, Pages:356-369

Akinwande OJ, Bi H, Gelenbe E, 2015, Managing Crowds in Hazards With Dynamic Grouping, Ieee Access, Vol:3, ISSN:2169-3536, Pages:1060-1070

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