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K. J. Ray Liu

Founder, former CEO, now Chairman and CTO, Origin Wireless AI

2022 IEEE President and CEO

Distinguished University Professor (Ret.) and Christine Kim Eminent Professor of Information Technology, University of Maryland, College Park

Dr. Liu is the founder, former CEO, and now Chairman and CTO of Origin Wireless that pioneers AI for wireless sensing and indoor tracking. The inventions/technology/products of wireless AI won three prestigious CES Innovation Awards, including CES Best of Innovation in 2021; 2017 CEATEC Grand Prix; 2020 Red Dot Design Award, and among other awards.

He was 2022 IEEE President and CEO. He strived to "Make IEEE Your Professional Home", a motto that defines his IEEE Presidency. He has served as the IEEE Vice President, Technical Activities (2019), Division IX Director of IEEE Board of Directors (2016-17), and the President of IEEE Signal Processing Society (2012-13), in which he has also served as Vice President - Publications (2006-08) and a member on the Board of Governor. He was the Editor-in-Chief of IEEE Signal Processing Magazine (2003-05). Dr. Liu was a founder of Asia-Pacific Association of Signal and Information Processing (APSIPA).

Dr. Liu was a Distinguished University Professor, Distinguished Scholar-Teacher, and Christine Kim Eminent Professor of Information Technology of the University of Maryland, College Park, from where he retired at the end of 2021 after over three decades of career in education. Over the past decades, he has trained over 70 Ph.D. and postdoctoral students, of which ten are now IEEE fellows, about thirty of whom are with major universities worldwide, and the rest are entrepreneurs or active members in industry.

His research contributions encompass broad aspects of signal processing and communications, including wireless sensing; indoor positioning/tracking; wireless communications; network science; multimedia signal processing; information forensics and security; bioinformatics; and signal processing algorithms and architectures, in which he has published over 10 books and 800 refereed papers.

Dr. Liu is the recipient of two IEEE Technical Field Awards:

     the 2021 IEEE Fourier Award for Signal Processing with the citation “For outstanding leadership in and pioneering contributions to signal processing for wireless sensing and communications”,

     the 2016 IEEE Leon K. Kirchmayer Graduate Teaching Award " for exemplary teaching and curriculum development, inspirational mentoring of graduate students, and broad educational impact in signal processing and communications".

He is also the recipient of numerous honors and awards including,

     IEEE Signal Processing Society 2014 Norbert Wiener Society Award for "influential technical contributions and profound leadership impact" (the highest award bestowed by SPS)

     IEEE Signal Processing Society 2009 Claude Shannon-Harry Nyquist Technical Achievement Award "for pioneering and outstanding contributions for the advances of signal processing in multimedia forensics, security, and wireless communications";

     and APSIPA 2018 Grand Award; 1994 National Science Foundation Young Investigator Award; IEEE Signal Processing Society Distinguished Lecturer; over a dozen of best paper/invention awards; IEEE Signal Processing Society Meritorious Service Award, IEEE Technical Activities Board Hall of Honors, and EURASIP Meritorious Service Award.

Recognized by Web of Science as a Highly Cited Researcher(2001-2014, 2016-17), Dr. Liu is a fellow of the IEEE (2003), AAAS (2008), and National Academy of Inventors (2019). He is honored as 2021 Distinguished Alumni of National Taiwan University. 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.

Dr. Liu and his Origin team invented the world’s first centimeter-accuracy indoor positioning and tracking system using the fundamental principle of time reversal, even under non-line-of-sight conditions with only a single commodity WiFi device. His team discovered that due to a large number of multipaths, the time-reversal focusing effect exhibits an energy distribution whose stationary behavior can be harnessed to accurately estimate speed under severe indoor multipaths, a groundbreaking fundamental discovery that broke the impasse of 170+ years of search for such a solution since the Doppler Effect.

With that as the foundation, his Origin team developed a wireless AI platform enabling a wide range of device-free, non-obtrusive sensing technology, including vital signs detection, sleep monitoring events/activities recognition, fall detection, human biometric, and indoor navigation, without any wearables by using commodity ambient WiFi signals.

Dr. Liu was also the founder of Odyssey Technologies in 1997 pioneering the world’s first digital surveillance system over Internet. The impact is ever lasing with the ubiquitous uses of cameras for surveillance over Internet nowadays.

During his over three decades of career as an educator, he received various research and teaching recognitions from the University of Maryland, including Poole and Kent Senior Faculty Teaching Award (2005), Outstanding Faculty Research Award (2008), and Outstanding Service Award (2012), (each with one award per year from the entire college), all from A. James Clark School of Engineering; Invention of the Year Award (for 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 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. As Vice President – Publications, he started the Inside Signal Processing eNewsletter for IEEE Signal Processing Society. 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 was a member of IEEE Fellow Committee.

As a leader in IEEE, Dr. Liu proposed the creation of the IEEE DataPort to offer data repository services to support open science and reproducible research by hosting data that are citable and useful for our community. He also proposed and co-led the development of the IEEE App that serves as “Your Global Gateway to IEEE” to discover IEEE and network globally.

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.

K. J. Ray Liu CV >>

Peter H. Siegel, "IEEE President K. J. Ray Liu, "Follow Multiple Paths, "Changing the World With Microwave Time Reversal Focusing", IEEE Journal of Microwaves, July 2022.


  • K.J.R. Liu and K. Yao, Eds., High Performance VLSI Signal Processing: Volume I: System Design and Methodology; Vol II: Algorithms, Architectures, and Applications, IEEE Press, 1998.
  • J. Chen, U.V. Koc, and K.J.R. Liu, Design of Digital Video Coding Systems: A Complete Compressed Domain Approach, (475 pages), Marcel Dekker, 2001.
  • K.J.R. Liu, W. Trappe, Z.J. Wang, M. Wu, and H. Zhao, Digital Fingerprinting for Multimedia Forensics, (254 pages), EURASIP Series on Signal Processing and Communications, Hindawi, 2005.
  • Y. Sun, W. Trappe, and K.J.R. Liu, Network-Aware Security for Group Communications, (304 pages), Springer, 2007.
  • W.P. Siriwongpairat and K.J.R. Liu, Ultra-Wideband Communication Systems: The Multiband OFDM Approach, (230 pages), IEEE-Wiley, 2007.
  • Z. Han and K.J.R. Liu, Resource Allocation for Wireless Networks: Basics, Techniques, and Applications, (530 pages), Cambridge University Press, 2008.
  • K.J.R. Liu, A.K. Sadek, W. Su, A. Kwasinski, Cooperative Communications and Networking, (650 pages), Cambridge University Press, 2008.
  • S. Haykin and K.J.R. Liu, Eds., Handbook on Array Processing and Sensor Networks, (900 pages), IEEE-Wiley, 2009.
  • K.J.R. Liu and B. Wang, Cognitive Radio Networking and Security: A Game Theoretical View, (618 pages), Cambridge University Press, 2010.
  • H. V. Zhao, W.S. Lin, and K.J.R. Liu, Behavior Dynamics in Media-Sharing Social Networks, (337 pages), Cambridge University Press, 2011.
  • K.J.R. Liu and Beibei Wang, Wireless AI: Wireless Sensing, Positioning, and Communications, (600 pages), Cambridge University Press, 2019.
  • Y. Chen, C.Y. Wang, C.X. Jiang, and K.J.R. Liu, Reciprocity, Evolution, and Decision Games in Network and Data Science, (460 pages), Cambridge University Press, 2021.
  • Selected Talks

  • "Wireless AI: A New Sixth Sense to Deciphering our World", IEEE Distinguished Lecture, Tokyo Section, University of Tokyo, Nov 1, 2022.
  • "My Ventures and Lessons Learned", Keynote, IEEE Signal Processing Society Entrepreneurship Forum at ICASSP, Singapore, May 22, 2022.
  • "IEEE is Your Professional Home",, Jan 2022.
  • "Smart Radios for Smart Life", Plenary, IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), New Orleans, March 7, 2017.
  • "Decision Learning in Data Science: Where John Nash Meets Social Media", Keynote, Interspeech, Singapore, Sep 16, 2014.
  • Editorials, Columns and Messages

    IEEE President's Note

  • "Make IEEE Your Professional Home", IEEE Spectrum, March 2022.
  • "A High Ideal", IEEE Spectrum, June 2022.
  • "A Promise Is a Promise", IEEE Spectrum, Sep 2022.
  • "Looking to 2050 and Beyond", IEEE Spectrum, Dec 2022.
  • "Why IEEE Is My Professional Home", IEEE Transmitter, April 2022.
  • "IEEE: The Stepping Stone for Young Technologists", IEEE Transmitter, July 2022.
  • "An Open Letter To Young Professionals and Students", IEEE Transmitter, Sep 2022.
  • "IEEE: A Welcome Home for All Engineers", IEEE Transmitter, Nov 2022.
  • "How an old teddy bear reminds me of home", IEEE Transmitter, Dec 2022.
  • "Advise to New Graduates", IEEE President Social Media, May 2022.
  • "Wireless Sensing", IEEE President Social Media, June 2022.
  • "Do Extraordinary Things, But Be an Ordinary Person", IEEE President Social Media, July 2022.
  • "IEEE as Home Base", IEEE President Social Media, Sep 2022.
  • President, IEEE Signal Processing Society

  • K.J.R. Liu, "Raison d'etre", IEEE Signal Processing Magazine, Jan 2012.
  • K.J.R. Liu, "Value and Benefit", IEEE Signal Processing Magazine, March 2012.
  • K.J.R. Liu, "A Melting Pot", IEEE Signal Processing Magazine, May 2012.
  • K.J.R. Liu, "Citation Impact", IEEE Signal Processing Magazine, July 2012.
  • K.J.R. Liu, "Peer Review", IEEE Signal Processing Magazine, Sep. 2012.
  • K.J.R. Liu, "Open Access: Opportunity or Hype?", IEEE Signal Processing Magazine, Nov 2012.
  • K.J.R. Liu, "Outreach via Community Building", IEEE Signal Processing Magazine, Jan 2013.
  • K.J.R. Liu, "Awards and Recognition", IEEE Signal Processing Magazine, March 2013.
  • K.J.R. Liu, "Membership", IEEE Signal Processing Magazine, May 2013.
  • K.J. R. Liu, "Sign onto Technical Committees", IEEE Signal Processing Magazine, July 2013.
  • K.J.R. Liu, "GlobalSIP: A New Flagship", IEEE Signal Processing Magazine, Sep 2013.
  • K.J.R. Liu, "Sustainable Finance", IEEE Signal Processing Magazine, Nov 2013.
  • K.J.R. Liu, "A Lasting Journey", IEEE Signal Processing Magazine, Jan 2014.
  • Editor-in-Chief, IEEE Signal Processing Magazine

  • K.J.R. Liu, "A New Journey Begins", IEEE Signal Processing Magazine, Jan 2003.
  • K.J.R. Liu, "Building a Stronger Sense of Community", IEEE Signal Processing Magazine, May 2003.
  • K.J.R. Liu, "Beyond Signal Processing Education", IEEE Signal Processing Magazine, Sep 2003.
  • K.J.R. Liu, "Capture the Evolution", IEEE Signal Processing Magazine, Jan 2004.
  • K.J.R. Liu, "Why Not? The Magazine Way", IEEE Signal Processing Magazine, May 2004.
  • K.J.R. Liu, "Signal Processing Inside?", IEEE Signal Processing Magazine, Sep 2004.
  • K.J.R. Liu, "Ranked First in Citation Impact", IEEE Signal Processing Magazine, Jan 2005.
  • K.J.R. Liu, "Volunteers", IEEE Signal Processing Magazine, May 2005.
  • K.J.R. Liu, "A Time to Reflect", IEEE Signal Processing Magazine, Nov 2005.