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Ephremides, Anthony

Anthony Ephremides
Distinguished University Professor
Cynthia Kim Eminent Professor of Information Technology
2333 A.V. Williams Bldg.

Research Interests 

Communications systems (information theory, communication theory, multi-user systems, communication networks, satellite systems) with focus on energy efficiency and cross-layer approaches to design; systems theory, stochastic systems, optimization, signal processing, wireless communications



Anthony Ephremides received his B.S. degree from the National Technical University of Athens (1967) and M.S. (1969) and Ph.D. (1971) degrees from Princeton University, all in Electrical Engineering. He has been at the University of Maryland since 1971 and currently holds a joint appointment as Professor in the Electrical Engineering Department and in the Institute of Systems Research (ISR) of which he is a founding member. He is co-founder of the NASA Center for Commercial Development of Space on Hybrid and Satellite Communications Networks established in 1991 at Maryland as an off-shoot of the ISR. He served as Co-Director of that Center from 1991 to 1994.

He was a Visiting Professor in 1978 at the National Technical University in Athens, Greece and in 1979 at the EECS Department of the University of California, Berkeley and at INRIA, France. During 1985-1986 he was on leave at MIT and ETH in Zurich, Switzerland. He was the General Chairman of the 1986 IEEE Conference on Decision and Control in Athens, Greece and the 1991 IEEE International Symposium on Information Theory in Budapest, Hungary. He also organized two workshops on Information theory in 1984 (Hot Springs, VA) and 1999 (Metsovo, Greece). He was the Technical Program Co-Chair of the IEEE INFOCOM in New York City in 1999 and the IEEE International Symposium on Information theory in Sorrento, Italy in 2000.

He has also been the Director of the Fairchild Scholars and Doctoral Fellows Program, an academic and research partnership program in Satellite Communications between Fairchild Industries and the University of Maryland. He won the IEEE Donald E. Fink Prize Paper Award (1992) and he was the first recipient of the Sigmobile Award of the ACM (Association of Computer Machinery) for contributions to wireless communications in 1997. He has been the President of the Information Theory Society of the IEEE (1987) and has served on its Board of Governors almost continuously from 1981 until the present. He was elected to the Board of Directors of the IEEE in 1989 and 1990.

Dr. Ephremides has authored or co-authored over 100 technical journal papers and 300 technical conference presentations. He has also contributed chapters to several books and edited numerous special issues of scientific journals. He has also won awards from the Maryland Office of Technology Liaison for the commercialization of products and ideas stemming from his research. He has served on the Editorial Boards of the IEEE Transactions on Automatic Control, IEEE Transactions on Information theory, the Journal of Wireless Networks, and the International Journal of Satellite Communications.

He has been the Dissertation Supervisor of over twenty Ph.D. students who now hold prominent positions in academia, industry, and research labs. He is the founder and President of Pontos, Inc., a Maryland company that provides technical consulting services since 1980.

Dr. Ephremides' interests are in the areas of communication theory, communication systems and networks, queueing systems, signal processing, and satellite communications. NSF, NASA, ONR, ARL, NRL, NSA, and Industry have continuously supported his research since 1971.

Honors and Awards 

Institute of Electrical and Electronics Engineers, 1984

Other professional awards
Fred W. Ellersick Milcom Award for the "Best Paper in the Unclassified Technology Program" (IEEE), 2000
IEEE Third Millennium Medal, 1999
ACM/SIGMOBILE Award for Outstanding Contributions to Research on Mobility of Systems, Users, Data, and Computing, 1996

University of Maryland awards
Distinguished University professor, 2012
Cynthia Kim Professor in Information Technology, 2003
Fellow, inaugrual class of the University of Maryland's Academy of Excellence in Teaching and Learning, 2002
University of Maryland E. Kirwan Award, 2001
ISR Oustanding Faculty Award, 2000

Related News 

ECE Inducts Three New Distinguished Alumni
Ghanadan, Tan, and Viniotis inducted for leadership and meritorious contributions to engineering, humanitarian efforts, and the application of their engineering education to other disciplines. June 14, 2018

Ephremides leads new NSF Age of Information project
The project will use the new concept of Age of Information to discover the relationships between information theory and signal processing, two of the main pillars of information science. June 12, 2018

Ulukus named Anthony Ephremides Professor in Information Sciences and Systems
The chaired professorship provides annual support for a faculty member in the field of Information Sciences and Systems in the Department of Electrical and Computer Engineering.  April 17, 2018

Ephremides is PI for new ONR 'age of information' grant
The research will focus on the use of age for wireless network control. November 30, 2017

John S. Baras inducted into Clark School Innovation Hall of Fame
Baras created algorithms and protocols by which Internet services can be delivered over satellite. October 11, 2016

Ephremides speaks at Princeton EE commencement event
He earned his Ph.D. at Princeton in 1971. June 1, 2016

Ephremides and colleagues issued U.S. Patent 9,318,232
The invention is a new apparatus, system, and technique for performing matrix spectral factorization. April 21, 2016

Alumnus Tassiulas Wins 2016 IEEE Kobayashi Award
ECE alum recognized for scheduling and stability analysis of networks. April 12, 2016

NSF Funds Novel Research to Create Scalable Wireless Networking, Averting Usage Crisis
Ephremides is co-PI on half-million dollar, three year grant September 4, 2015

UMD Clark School Highlights Disaster Resilience at Mpact Week
Five-day event focused on role of engineers in disaster prevention, mitigation, and response. November 26, 2014

Reelin’ in a Whopper—A True Fish Tale
Ephremides and Gomez take to the waters of Alaska for sportfishing. August 28, 2014

Ephremides receives NSF grant to bridge wireless network theories
Professor will develop a theoretical foundation for channel access in distributed wireless systems. August 4, 2014

Ephremides Wins IEEE MILCOM Lifetime Acheivement Award
Professor Ephremides named 2014 IEEE MILCOM Technical Lifetime Acheivement Award Recipient for his contributions to military communications. July 15, 2014

Anyone have recipes for blue marlin?
Tony Ephremides lands a 176-pound specimen in Hawaii. June 27, 2014

What a haul!
Ephremides lands the big one in the Chesapeake Bay. April 19, 2014

Ephremides, Rong issued patent for cooperative transmission in wireless networks
The invention addresses implemented on the network protocol layer. September 27, 2013

Tony Ephremides is editor of top-ranked journal
Foundations and Trends in Networking is ranked number one among computer networks and communications journals. April 10, 2013

MSSE student Mehdi Dadfarnia to speak at NIST seminar
First-year grad student will talk about requirements analysis for safer ambulance patient compartments. March 13, 2013

Ephremides named to Institutional Council in Greece
Professor has been elected to 15-member council for the National Technical University of Athens. January 15, 2013

Some FRESH results
A fish tale featuring Professor Tony Ephremides. December 19, 2012

Ephremides Receives 2012 AHSN Technical Recognition Award
Ephremides recognized by the IEEE Communication Society as a significant contributor to Ad Hoc and Sensor Networks field. October 26, 2012

Ephremides is invited speaker at Workshop on Network Science
He spoke on the problem of scheduling in wireless networks. August 5, 2012

Ephremides Named Distinguished University Professor
ECE Professor receives highest academic honor conferred by the University of Maryland. June 14, 2012

Ephremides Invited to M2M 2011 as Plenary Speaker
Ephremides delivers plenary lecture at M2M 2011 in Taipei, Taiwan. November 1, 2011

Ephremides is PI for NSF grant on energy-efficient cognitive networking
This is a joint project with the Center for Wireless Communications at the University of Oulu, Finland, and Rensselaer Polytechnic Institute. October 24, 2011

Ephremides Chairs ISIT 2011 Conference in St. Petersburg
Professor organizes premier conference of the prestigious IEEE Information Theory Society. August 8, 2011

Ephremides gives distinguished lecture at RWTH Aachen University
Professor speaks on issues involving multi-access channels. June 27, 2011

2011 ISR Awards Ceremony winners announced
Awards given to faculty, staff, graduate and undergraduate students. June 2, 2011

Jeongho Jeon Earns NIST-ARRA Fellowship
ECE graduate student is awarded a three-year fellowship. May 9, 2011

Ephremides, Pantelidou co-author new wireless networks book
Scheduling in Wireless Networks addresses a rich set of problems regarding allocation of network resources. April 26, 2011

Ephremides gives invited lecture at the University of Pennsylvania
Professor speaks on "Cooperation at the Network Level." February 23, 2011

ISR's busy November: NSF site visit, 25th anniversary dinner, SAC meeting
The Institute for Systems Research held three major events from Nov. 17–19. December 14, 2010

Ephremides gives plenary talk at IEEE Globecom Conference
Professor spoke on medium access control in wireless networks in a cross-layer fashion. December 5, 2010

Ephremides Engages in Distinguished Lecture Tour in Sweden
Ephremides gives lectures at four universities in Sweden, attends Green Communications workshop in Turkey. October 1, 2010

Beiyu Rong wins Best Student Paper Award at WiOpt
Paper is an important step in linking information theoretic and networking concepts. August 11, 2010

Ephremides is plenary speaker at ISIT 2010
Professor speaks on cross-layer issues in communication networks. June 17, 2010

Ephremides, Laroia headline at CISS
ISR faculty member and ISR alumnus are plenary speakers at prestigious information sciences conference. March 24, 2010

Ephremides Gives Distinguished Lectures on Wireless Networking
Professor speaks in Australia, New Zealand as part of IEEE Communications Society program. December 22, 2009

Ephremides Receives ONR Grant for Wireless Networks Research
Professor will receive support to research alternative measures of network ultimate capabilities. October 16, 2009

Ephremides Receives NSF Grant for Cooperative Networking
Research goes beyond the physical layer in defining cooperative techniques for wireless networks. July 29, 2009

Ephremides provides expertise in cell phone signal jamming story
The Washington Post quotes the professor about the feasibility of blocking signals inside prisons. July 6, 2009

Ephremides gives keynote address at IEEE international wireless symposium
ECE/ISR professor spoke on cooperation at the network level. June 24, 2009

Ephremides part of Distinguished Lecture Tour
Professor travels on behalf of the IEEE Communications Society and the University of Maryland. June 8, 2009

Fourteen ISR-affiliated students receive Ph.D.s
Congratulations to our ISR-affiliated doctoral graduates! May 22, 2009

Anna Pantelidou accepts postdoctoral position at University of Oulu, Finland
Recent ECE Ph.D. will work in the Center for Wireless Communications. May 1, 2009

Student research: Anna Pantelidou
Student of Tony Ephremides works on research promising higher data rates in wireless networks. February 25, 2009

Alumnus interview: Reza Shahidi
The Qualcomm engineer talks about his career in the wireless communication industry. October 18, 2008

ISR announces Systems Symposium poster contest winners
Five posters selected for $500 research support prize. May 19, 2008

Ephremides is keynote speaker at IEEE International Information Theory Workshop
Professor speaks at Portugal event honoring the founding of information theory. May 14, 2008

ECE Faculty Honored at Inaugural Scholarship & Research Celebration
Twenty-seven ECE faculty members honored, representing 1/8 of researchers recognized university-wide. May 2, 2008

Ephremides Gives Distinguished Lecture at Texas A&M
Professor speaks on the subject of wireless ad hoc networks. April 13, 2008

Researchers Win MURI Award for Multi-Scale Networks
Team that includes Profs. Baras and Ephremides wins multi-million dollar grant to develop communication networks. March 23, 2008

Ephremides speaks at University of Minnesota, IBM Research Center
Professor gives invited distinguished lecture on network coding. March 14, 2008

Ephremides Gives Two Invited Talks at Colorado State
Prof. Tony Ephremides delivered a distinguished lecture talk and special seminar on the subject of networking. February 5, 2008

Ephremides gives lectures on wireless network cross-layer design
Professor is one of IEEE Communication Society's distinguished lecturers. January 18, 2008

Ephremides featured in Computerworld story on future mobile technologies
Article explores 'disruptive technologies' that will affect future work, play and communication. October 23, 2007

Ephremides Establishes Chair Professorship
ECE professor "gives back" to the Clark School. September 26, 2007

Ephremides, Luo receive NSF grant for wireless multicasting optimization
Research will develop a systematic framework for maximizing a general multicast utility function through optimization. September 20, 2007

Ephremides, Nguyen, Wieselthier receive U.S. Patent 7,233,584
Invention improves multiple-access capability for wireless networks. September 19, 2007

Faridi, Girici accept faculty positions
Two students advised by Tony Ephremides will begin their university careers this fall. July 19, 2007

A New Method of Matrix Spectral Factorization with Applications, Including, but not Limited to, Data Compression, Filtering, Wireless Communications, and Radar Systems (ISR IP)
This IP is available to license. June 23, 2007

A Practical Method for Resource Allocation for QoS in OFDMA Wireless Systems (ISR IP)
This IP is available to license. June 23, 2007

Power Control for Active Link Quality Protection in CDMA Networks (ISR IP)
This IP is available to license. June 18, 2007

Integrated Method for Performing Scheduling, Routing and Access Control in a Computer Network (ISR IP)
This IP is available to license. June 18, 2007

Power Control Based Admission Methods for Maximum Throughput in DS-CDMA Networks with Multi-Media Traffic (ISR IP)
This IP is available to license. June 18, 2007

Power Allocation and Quality of Service Control to Enhance Capacity of CDMA Network with Voice and Data (ISR IP)
This IP is available to license. June 16, 2007

Design Tool for Base-Station Placement (ISR IP)
This IP is available to license. June 16, 2007

Liu Named Fellow of the Academy of Excellence in Teaching and Learning
Professor selected to join University of Maryland teaching academy. May 25, 2007

Ephremides Delivers Plenary Lecture at IEEE Communication Theory Workshop
Professor presents plenary lecture an unprecedented second consecutive year. May 25, 2007

Ephremides, Nguyen, Wieselthier win NRL publication award
Co-authors are honored for paper extending existing models to better characterize the impact of the physical layer on random-access network performance. March 27, 2007

ISR alums Leonard, Tassiulas named IEEE Fellows
Both earned Electrical Engineering Ph.D.s in the early 1990s. March 26, 2007

Five ISR communication researchers featured in E@M magazine
Cover story features Professors Ulukus, Ephremides, Narayan, Liu and La February 24, 2007

Richard La promoted to associate professor
ECE and ISR faculty member is specialist in network modeling and resource allocation. February 22, 2007

Ephremides Delivers Distinguished Lectures on Wireless Networks
ECE/ISR professor tours Northeast as IEEE Communications Society Distinguished Lecturer. September 26, 2006

Ephremides quoted in Computerworld article
Wireless expert offers opinions on the future of mobile technology August 16, 2006

Ephremides wins information theory service award
IEEE recognizes professor for his service and leadership in the field of information theory. May 12, 2006

ISR alum earns tenure at MIT
Eytan Modiano, a specialist in optical and ad hoc wireless networks, is an associate professor at MIT. May 11, 2006

Post-doctoral Fellow Luo Joins Colorado State Faculty
Luo is moving on after four years as post-doctoral fellow at Maryland. April 21, 2006

Ephremides To Deliver Keynote at IEEE Communication Theory Workshop
Ephremides is one of three featured plenary speakers at 35th annual workshop. April 21, 2006

Ephremides, Ayyagari awarded patent for DS-CSMA Networks
Invention maximizes data throughput over a multicode network November 2, 2005

Ephremides is PI for NSF MRI grant on wireless sensor networks
Project will develop experimental prototypes of intelligent embedded systems September 3, 2005

Two patents for Ephremides and Ayyagari
Inventions target power control in computer networks July 22, 2005

Ephremides, Ulukus, Tassiulas part of DoD MURI
Researchers to investigate dynamic, ad-hoc wireless networking March 20, 2005

Ephremides speaks at LG Labs
Professor travels to Seoul to address leading manufacturer of cell phones February 3, 2005

Ephremides editor-in-chief of Foundations and Trends in Networking
Professor will head new publication by NOW Poublishers November 2, 2004

Ephremides gives invited talks at Ivy League schools
Professor will be speaking at Yale University and the University of Pennsylvania. October 9, 2003

Ephremides appointed Cynthia Kim Professor
Dean Nariman Farvardin announces newly created information technology position. August 3, 2003

Ephremides, Baras, La, Ulukus awarded wireless networks grant
Research to exploit inter-layer dependencies in network protocols for improved performance. September 3, 2002

Baras, Berenstein, Ephremides, Liu and Papadopoulos win DoD URI
Research to focus on distributed immune systems for wireless networks information assurance March 29, 2001

Levine and Ephremides receive awards for oustanding contributions in their field
Peers select Professor William Levine and Professor Tony Ephremides for the IEEE Third Millennium Medal. March 13, 2000