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Liu, K.J. Ray

K.J. Ray Liu
Christine Kim Eminent Professor of Information Technology
2232 Kim Bldg
(301) 405-6619

Research Interests 

  • Signal processing algorithms and architectures.
  • Multimedia communications and signal processing.
  • Wireless communications and networking.
  • Information security.
  • Bioinformatics.


Dr. Liu received the B.S. degree from the National Taiwan University in 1983, and the Ph.D. degree from UCLA in 1990, both in electrical engineering. He was named a Distinguished Scholar-Teacher of University of Maryland in 2007, where he is Christine Kim Eminent Professor of Information Technology. He serves as Associate Chair of Graduate Studies and Research of the Electrical and Computer Engineering Department, University of Maryland, College Park. Dr. Liu is Director of Communications and Signal Processing Laboratories and leads the Maryland Signals and Information Group (SIG) with research contributions that encompass broad aspects of wireless communications and networking; multimedia communications and signal processing; information forensics and security; biomedical imaging and bioinformatics; and signal processing algorithms and architectures, in which he has published over 10 books and 550 refereed papers.

Dr. Liu is the recipient of numerous honors and awards including the 1993 National Science Foundation (NSF) Research Initiation Award and 1994 NSF Young Investigator Award; best paper awards from IEEE Signal Processing Society, Vehicular Technology Society, and EURASIP; IEEE Signal Processing Society 2004 Distinguished Lecturer; and EURASIP 2004 Meritorious Service Award. Dr. Liu is the recipient of 2009 IEEE Signal Processing Society Technical Achievement Award. He is a Fellow of the IEEE and AAAS. His research was featured as one of seven technologies that IEEE believes will have the world changing implications on the way humans interact with machines, the world and each other, in honor of IEEE's 125th Anniversary.

He also received various research and teaching recognitions from the University of Maryland, including Poole and Kent Senior Faculty Teaching Award and Outstanding Faculty Research Award, both from A. James Clark School of Engineering; Invention of the Year Award from Office of Technology Commercialization, as well as the George Corcoran Award for outstanding contributions to electrical engineering education from Electrical and Computer Engineering Department, and the Outstanding Systems Engineering Faculty Award in recognition of outstanding contributions in interdisciplinary research from Institute for Systems Research.

Dr. Liu is President-Elect of IEEE Signal Processing Society. He was Vice President - Publications and has been a member-at-large on the Board of Governor of IEEE Signal Processing Society. He is a founder of Asia-Pacific Association of Signal and Information Processing (APSIPA). Dr. Liu was the Editor-in-Chief of IEEE Signal Processing Magazine, the founding Editor-in-Chief of EURASIP Journal on Applied Signal Processing (JASP, now called EURASIP Journal on Advances in Signal Processing), and the prime architect and proposer of IEEE Trans. on Information Forensics and Security and IEEE Journal on Selected Topics of Signal Processing.

Dr. Liu has served as the General Chair of 2007 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Hawaii; a Co-General Chair of the First APSIPA Annual Summit and Conference (ASC) in Sapporo, 2009; the Chair of Multimedia Signal Processing Technical Committee; Technical Program Chair of 2003 IEEE International Conference on Multimedia and Expo. He has delivered keynotes in various international conferences and workshops. He has been consultants to industry and also has served occasionally as expert consultant/witness for legal proceedings.

He has been an Associate Editor of IEEE Transactions on Signal Processing and has been a Guest Editor of special issues on Multimedia Signal Processing of Proceedings of the IEEE, special issue on Signal Processing for Wireless Communications of IEEE Journal of Selected Areas in Communications, special issue on Multimedia Communications over Networks of IEEE Signal Processing Magazine, special issue on Multimedia over IP of IEEE Trans. on Multimedia, special issue on cooperative communications and networking of IEEE Journal of Selected Areas in Communications, special issue on signal and information processing for social networks of IEEE Journal of Selected Topics on Signal Processing, and special issue on Signal and Information Processing for Social Learning and Networking of IEEE Signal Processing Magazine..

He is a co-author of Cognitive Radio Networking and Security – A Game Theoretic View, Cambridge University Press, 2010; Cooperative Communications and Networking, Cambridge University Press, 2009; Resource Allocation for Wireless Networks: Basics, Techniques, and Applications, Cambridge University Press, 2008; Ultra-Wideband Communication Systems: The Multiband OFDM Approach, Wiley, 2007; Network-Aware Security for Group Communications, Springer, 2007; Multimedia Fingerprinting Forensics for Traitor Tracing, EURASIP Book Series on Signal Processing and Communication (Hindawi), 2005; Design of Digital Video Coding Systems: A Complete Compressed Domain Approach, Marcel Dekker, 2001; and a co-editor of Handbook on Array Processing and Sensor Networks, IEEE-Wiley, 2009 and High Performance VLSI Signal Processing: Volume I: System Design and Methodology; Vol. II: Algorithms, Architectures, and Applications, IEEE Press, 1998.

Honors and Awards 

    •    University of Maryland Invention of the Year Award (2010)
    •    IEEE Signal Processing Society Technical Achievement Award (2009)
    •    Clark School Outstanding Faculty Research Award (2008)
    •    American Association for the Advancement of Science Fellow
    •    Fellow, University of Maryland Academy of Excellence in Teaching and Learning
    •    Distinguished Scholar-Teacher Award, University of Maryland (2006-2007)
    •    IEEE Signal Processing Society Best Paper Award (2005)
    •    Poole and Kent Company Senior Faculty Teaching Award - A. James Clark School of Engineering (College of Engineering), University of Maryland (2005)
    •    University of Maryland Invention of the Year Award, Information Science category (2005)
    •    European Association for Signal, Speech and Image Processing (EURASIP) Best Paper Award (2004)
    •    Board of Governors, IEEE Signal Processing Society (2004 - present)
    •    Distinguished Lecturer, IEEE Signal Processing Society (2004)
    •    EURASIP Meritorious Service Award (2004)
    •    Fellow of IEEE (2003)
    •    Best Paper Award - 50th IEEE International Vehicular Technology Conference (VTC), Amsterdam (1999)
    •    Outstanding Systems Engineering Faculty Award, Institute for Systems Research, University of Maryland (1996)
    •    National Science Foundation National Young Investigator (1994)
    •    George Corcoran Award, ECE Department, University of Maryland (1994)
    •    IEEE Signal Processing Society's Senior Award (Best Paper Award) (1993)
    •    Research Initiation Award, Signal Processing Program, National Science Foundation (1993)
    •    Vice President - Publication, IEEE Signal Processing Society (2006 - 2008)
    •    Editor-in-Chief, IEEE Signal Processing Magazine (2003 - 2005)
    •    Editor-in-Chief, EURASIP Journal on Applied Signal Processing (2000- 2002)

Related News 

ECE Professor Wins IEEE SPS Society Award
Christine Yurie Kim Eminent Professor K.J. Ray Liu to be honored with the top Signal Processing Society award. December 4, 2014

Two ECE Alumni Elevated to IEEE Fellow
An-Yeu (Andy) Wu and Haitao (Heather) Zheng, both former students of Professor K.J. Ray Liu, are among the 2015 class of IEEE Fellows. December 2, 2014

Liu Elected to IEEE Board of Directors
In this position, Liu will represent seven IEEE societies. October 29, 2014

Liu Delivers Keynote at INTERSPEECH 2014
Liu speaks at the 15th annual conference of the International Speech Communication Association. October 10, 2014

Wu Named Editor-in-Chief of IEEE Signal Processing Magazine
IEEE Signal Processing Society recognizes Wu's dedication, commitment, and contributions to the field through her selection for this influential position. October 3, 2014

Ghodssi Named UMD Distinguished Scholar-Teacher
Professor Ghodssi is the 12th ECE Professor to be honored as a Distinguished Scholar-Teacher. March 19, 2014

Chung Honored at Commencement
Academic director receives Dr. Marilyn Berman Pollans Outstanding Service Award for Staff December 23, 2013

Two ECE Alumni Elevated to 2014 IEEE Fellows
Trappe and Han, both advised by Professor K. J. Ray Liu, are honored for thier acheivements by the Institute of Electrical and Electronics Engineers.  December 4, 2013

Liu, Jiang, Chen, and Gao Win Best Paper Award
ECE research team wins Cognitive Radio and Networks Symposium best paper award at the 2013 IEEE Global Communications Conference. December 2, 2013

Srivastava Named Interim Associate Chair of Graduate Studies and Research
He will serve as the interim associate chair for the 2013-14 academic year. October 8, 2013