Internetworked Systems Lab

Lefteris Mamatas

Who am I

I was born in Alexandroupolis (Greece) at 7/1/1979. I graduated in 2003 from the Dept of Electrical and Computer Engineering, Demokritos University of Thrace. Since then, I am a Phd student in the Demokritos University of Thrace under the advisory of Prof. Vassilis Tsaoussidis. My research interests are focused on congestion control in packet networks. Additionally, I am a founder of Araneous Internet Services (an IT company situated in North Greece - I have 7 years of professional programming experience using different computer environments (Linux / Unix / Windows). I worked for DoCoMo Eurolabs (Munich) in the research project Ambient Networks, from May to Oktober of 2005.

Awards - Honors

  • Reviewer in: Elsevier Computer Networks (COMNET), IEEE Transactions on Mobile Computing, GlobeCom2004, WWIC2004, WWIC2005, ICNSC06, ICC2006
  • 2nd Award of the Hellenic Competition on Computer Science - Informatics, 15-5-1993, on the context of the 5th International Olympics on Computer Science - Informatics held by the Hellenic Company of Computer Scientists.
  • Participation on the finals of the Hellenic Competition of Computer Science - Informatics, 21/5/1994 on the context of the 6th International Olympics on Computer Science - Informatics (participation of 25 High School students after examinations).
  • Participation as a Member of the Greek National Team at the 2nd Balkanian Olympics on Computer Science, held in Greece (1-6 October 1994).

L. Mamatas and V. Tsaoussidis,
"Exploiting Energy-Saving Potential in Heterogeneous Networks", International Journal of Parallel, Emergent and Distributed Systems (IJPEDS), Taylor & Francis, 2007, accepted.

I.Psaras, L.Mamatas, V.Tsaoussidis,
"On Protocol Engineering: Detect, Confirm and Adjust",
Journal of Internet Protocol Technology (IJIPT), Inderscience Publishers Ltd, to appear

L.Mamatas, T. Harks and V.Tsaoussidis,
"Approaches to Congestion Control in Packet Networks",
Journal of Internet Engineering (JIE),volume 1, issue 1, Kleidarithmos Press, 2007

L. Mamatas and V. Tsaoussidis,
"Effort/Gains Dynamics in Heterogeneous Networks",
International Journal of Communication Systems (IJCS), Wiley Academics,  2007, accepted


L. Mamatas and V. Tsaoussidis,
"Differentiating Services for Sensor Internetworking",
The IFIP Fifth Annual Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net 2007), June 2007, Corfu, Greece

Lefteris Mamatas and Vassilis Tsaoussidis,
"Transport Protocol Behavior and Energy-Saving Potential"
 Sixth International Workshop on Wireless Local Networks (WLN 2006) in conjunction with IEEE LCN 2006, Tampa, Florida, Funded by the European Commision and the Project PENED 2003 of GSRT

Ioannis Psaras, Lefteris Mamatas and Paulo Mendes,
"QoS Control in Next Generation IP Networks: An Experimental Analysis of Flow-based and SLS-based Mechanisms"
 Workshop on Networking in Public Transport (WNEPT 2006) in conjunction with QShine 2006, Ontario, Canada

I.Psaras, V.Tsaoussidis, L.Mamatas,
"CA-RTO: A Contention-Adaptive Retransmission Timeout"
 ICCCN 2005, San Diego, USA, Funded by the European Commission and the Project PENED 2003 of GSRT

L.Mamatas, V.Tsaoussidis,
"A new approach to Service Differentiation: Non-Congestive Queueing"
CONWIN 2005, Budapest, Hungary (also presented in 2nd MC meeting of COST-290, Colmar, France, 2005)

C.Zhang, L.Mamatas,
"The Interaction Between Window Adjustment Strategies and Queue Management Schemes"
WWIC 2005, Xanthi, Greece

S. Kontogiannis, L. Mamatas, I. Psaras and V. Tsaoussidis,
"Measuring Transport Protocol Potential for Energy Efficiency"
WWIC 2005, Xanthi, Greece

L.Mamatas, V.Tsaoussidis and C.Zhang,
"BOTTLENECK-QUEUE BEHAVIOR: How much can TCP know about it?"
INC 2005, Samos, Greece

L.Mamatas and V.Tsaoussidis,
"Protocol Behavior: More Effort, More Gains?"
PIMRC 2004, Barcelona, Spain (also presented in 1st MC meeting of COST-290, Malta, 2004)

I.Psarras, L.Mamatas and V.Tsaoussidis,
"Shaping TCP Traffic in Heterogeneous Networks"
HET-NETS 2004, Ilkley, UK

A.Syropoulos, L.Mamatas, P.Allilomes and K.Sotiriades,
"A Distributed Simulation of Transition P-Systems"
WMC 2003, Tarragona, Spain

Technical Reports

G. Papastergiou, C. Georgiou, L. Mamatas, and V. Tsaoussidis,
"On Short Packets First: A delay-oriented prioritization policy",
Technical Report: TR-DUTH-EE-2008-8, submitted.

L.Mamatas, V.Tsaoussidis,
Technical Report: TR-DUTH-EE-2004-13, submitted.

L.Mamatas, V.Tsaoussidis and C.Zhang,
"Approaches to Congestion Control in packets networks"
Technical Report: TR-DUTH-EE-2004-10, submitted.

Contact information

Iroon 27 Str.
ZipCode: 67100
Telephone: +302541083550
Fax: +302541083551
E-mail: emamatas (at)