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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 is the recipient of numerous honors and awards including IEEE Signal Processing Society 2014 Society Award for "influential technical contributions and profound leadership impact"; IEEE Signal Processing Society 2009 Technical Achievement Award for "for pioneering and outstanding contributions for the advances of signal processing in multimedia forensics, security, and wireless communications"; 1994 National Science Foundation Young Investigator Award; best paper awards from IEEE Signal Processing Society, Communications Society, Vehicular Technology Society, and EURASIP; IEEE Signal Processing Society Distinguished Lecturer; and EURASIP Meritorious Service Award. Recognized by Thomson Reuters as an ISI Highly Cited Researcher, Dr. Liu 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, Outstanding Faculty Research Award, and Outstanding Service Award, (each with one award per year from the entire college), all from A. James Clark School of Engineering; Invention of the Year Award (three times) from University's 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 a member of IEEE Fellow Committee. He was the prime architect and proposer of IEEE Trans. on Information Forensics and Security, IEEE Journal on Selected Topics of Signal Processing, and IEEE Trans. on Multimedia. He also initiated the creation of IEEE Trans. on Computational Imaging and IEEE Trans. on Signal and Information Processing over Networks. He 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/plenaries in various international conferences and workshops and distinguished lectures in many universities/institutes worldwide. He has been consultants to industry and also has served occasionally as expert consultant/witness for legal proceedings. In addition, Dr. Liu also served in the review panels of centers of excellence from various nations and agencies such as National Science Foundation and European Research Council, and many countries.

He has been on the editorial board of IEEE Transactions on Signal Processing, IEEE Journal of Selected Topics in Signal Processing and IEEE Signal Processing Magazine. He has also 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.

Dr. Liu is a co-author of "Behavior Dynamics in Media-Sharing Social Networks", Cambridge University Press, 2011; 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 

    •    IEEE Signal Processing Society Meritorious Service Award (2016)
    •    IEEE Signal Processing Society Award (2014)
    •    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)

Professional Memberships 

IEEE Signal Processing Society

Related News 

Chellappa and Liu Ranked in Top 150 Scientists on Academic Website
Chellappa and Liu have been nationally ranked in the top 150 scientists in the field of computer science and electronics for 2018 by the academic website Guide2Research. April 6, 2018

Clark School Researchers Recognized Among "World's Most Influential Scientific Minds"
Three Clark School faculty members have been named to Clarivate Analytics' 2017 Highly Cited Researchers list. January 4, 2018

Clarivate Analytics Names K. J. Ray Liu to Highly Cited Researchers List for 2017
Researchers on this list have generated papers ranking in the top 1% by citations, considering both year and field of publication. November 21, 2017

Origin Wireless’s TRM Technology and Origin & Bot System Wins 2017 CEATEC Grand Prix Award
The technology opens up applications such as home security, vital monitoring, human fall detection, asset tracking, and indoor navigation. October 26, 2017

Liu Elected 2018 IEEE Technical Activities Vice President
Prof. Liu’s candidacy lies in a vision with strong conviction: Together we are stronger than apart. October 11, 2017

UMD Professor's Startup Overcomes Challenges of Indoor Positioning Systems
Origin Wireless, Inc. offers 'sixth sense' to revolutionize smart radio technologies September 14, 2017

Liu Gives Plenary Keynote Speech at ICASSP 2017
ICASSP is the premier international conference on signal processing. March 13, 2017

Alumnus Peng Qiu Granted Tenure at Georgia Tech
Qiu completed his Ph.D. in 2007 at the University of Maryland; there he was advised by Professor K.J. Ray Liu. February 22, 2017

Liu Wins 2016 IEEE Signal Processing Society Meritorious Service Award
Dr. Liu received the award for exemplary service to and leadership in the Signal Processing Society. January 4, 2017

Alumnus Matthew C. Stamm Wins NSF CAREER Award
Stamm's research seeks to provide information verification and security in scenarios when an information source cannot be trusted October 27, 2016