Faculty Directory

Liu, K.J. Ray

Liu, K.J. Ray

Christine Kim Eminent Professor of Information Technology
Distinguished University Professor
Electrical and Computer Engineering
2232 Kim Bldg



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 being named a Distinguished University Professor, the 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.



  • Distinguished Alumni Award (National Taiwan University) (2021)
  • Named IEEE President-Elect (2021) and IEEE President (2022)
  • IEEE Fourier Award for Signal Processing (2021)
  • National Academy of Inventors (2019)
  • Distinguished University Professor (2019)
  • 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)


IEEE Signal Processing Society

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

Liu Featured in IEEE Journal of Microwaves

IEEE article highlight’s K.J. Ray Liu’s career and work as part of their Microwave Pioneer series.

ECE Names 2021 Distinguished Alumni

Alumni named for their leadership and meritorious contributions to the field of engineering, their humanitarian efforts, and the application of their engineering education to other disciplines.

Min Wu Elected President of IEEE Signal Processing Society

Wu will begin serving as IEEE SPS President on January 1, 2024.

Alumnus Matthew Stamm Named to Popular Science’s Brilliant 10 of 2021 List

Dr. Stamm’s research, entitled “Dusting for Fingerprints to Find Deepfakes,” addresses the increasing problem of alterations to digital objects through AI.

Pamela Abshire is named UMD Distinguished Scholar-Teacher

She is one of six Clark School faculty honored at the university's annual convocation.

Liu and Graduate Students Win Best Student Paper at WF-IoT 2021

Their paper aims to enable a universal virtual keyboard using wireless signals.

Liu Receives Distinguished Alumni Award from National Taiwan University

Liu received his B.S. degree from National Taiwan University in 1983, and will be honored for the award on November 15.

AID India humanitarian group living up to its name in COVID crisis

Founded by University of Maryland students, the non-profit was recently recommended for donations in the New York Times.

Origin Wireless Wins Two 2021 CES Awards, Including Best Innovation Award

High-tech startup Origin Wireless AI, led by Professor K.J. Ray Liu, wins two 2021 CES Awards.

Optical Society of America (OSA)

Institute of Electrical and Electronics Engineers (IEEE)

American Association for the Advancement of Science (AAAS)