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

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.

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.

Doyenne Reliability Engineering Program

A fellowship for Mozambican women to pursue graduate education in Reliability Engineering at UMD

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.

Nicole Mogul Receives A. James Clark School Outstanding Faculty Service Award

The selection committee selected Mogul as being one of the most innovative educators in the Clark School.

Liu Wins 2021 IEEE Fourier Award for Signal Processing

Professor K.J. Ray Liu received the award “for outstanding leadership in and pioneering contributions to signal processing for wireless sensing and communications.”

Professor K.J. Ray Liu Elected to Lead IEEE

Professor K. J. Ray Liu has been elected 2021 IEEE President-Elect and 2022 IEEE President.

Symptoms all in your head—or in your gut? Maybe a little of both.

UMD researchers are building an ingestible capsule that can monitor and model gut microbiome serotonin activity and help demystify the “gut-brain axis.”

Ingestible device research advances, enters new phase

New NSF funding, Lab on a Chip paper for Ghodssi group developing minimally invasive medical devices.

Spurring research group creativity in the time of COVID-19

Student-faculty teams that write review articles for journals reap multiple benefits.

Clark professors Wu, Liu named National Academy of Inventors Fellows

New inductees are latest of six UMD faculty recognized by NAI for ‘prolific spirit of innovation.’

Wu Awarded Harriett B. Rigas Award from the IEEE Education Society

Professor Min Wu received the prestigious Harriett B. Rigas Award from the IEEE Education Society for outstanding leadership in signal processing, education, and mentoring.

Liu Named Distinguished University Professor

Prof. Liu has been named a University of Maryland distinguished university professor, the most prestigious internal honor on campus.

Spacecraft carrying Adomaitis thin film experiment docks with the International Space Station

The experiment will travel on the ISS for a year, exposing samples to the environment of low earth orbit.

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.

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.

BioE Capstone 2016: New Projects Focus on Improved Healthcare for Underserved Communities, Pediatric Patients, and More

Affordable RT-PCR for clinical diagnostics, fear mitigation device for pediatric MRIs tie for first place.

Ulukus Named 2016-2017 Distinguished Scholar-Teacher by University of Maryland

The Distinguished Scholar-Teacher Program honors members of UMD faculty who have demonstrated outstanding scholarly achievements along with equally outstanding accomplishments as teachers.

Alumnus Peng Qiu Wins NSF CAREER Award

Qiu wins award for experimental design and model reduction in systems biology.

Liu Awarded 2016 IEEE Kirchmayer Graduate Teaching Award

Prolific Researcher Recognized for Exceptional Teaching and Mentoring

Alumnus Wins Canada's Killam Award

Jie Chen recognized for outstanding scholarship and substantial contributions to the scientific community.

Clark School Faculty, Staff Honored for Achievement

Teng Li, Ray Liu, and Heidi Sauber were recognized with awards.

Dean's Doctoral Research Award Winners Announced

Shenqiang Ren (materials science and engineering) takes first place and $1,500 prize.

Liu Selected for IEEE Panel

Prof. Ray Liu participates in IEEE 125th anniversary event.

Liu, Alumna Co-Author Book

ECE professor, graduate co-write book on multiband OFDM communications systems.

Liu, Moglen Selected for UM Teaching Academy

Professors named Fellows of the Academy for Excellence in Teaching and Learning.

ComputerWorld Honors Wu, Liu, Subrahmanian

Faculty recognized for digital fingerprinting, online opinion analysis technology.

Engineers Pioneer New Digital Forensics Technology

Digital fingerprinting technique introduced by Clark School researchers.

Alumna Featured in MIT's Technology Review

Zheng was cited for her innovations in cognitive radio technology.

Clark School Researchers Receive IEEE Award

IEEE is honoring a group of faculty and alumni for work in multimedia fingerprinting.

Alumna Named to MIT’s TR 35, Joins Faculty at UC-Santa Barbara

Clark School alumna Haitao Zheng has been named one of the top 35 innovators under the age of 35 by the Massachusetts Institute of Technology's Technology Review magazine.

K.J. Ray Liu named editor-in-chief of IEEE Signal Processing Magazine

Professor K.J. Ray Liu is now the editor-in-chief of IEEE Signal Processing Magazine.

Clark School Accomplishments Spring 2002

A list of Clark school accomplishments for Spring 2002

Five Clark School faculty awarded a $4 million URI Award from the Department of Defense

Five Clark School faculty members are part of a team that was recently awarded a $4 million, five-year URI Award from the DoD.