Signals, Information, and Algorithms Laboratory
Professor Gregory W. Wornell



Professor Gregory Wornell | RLE Biography
Office: 36-677
Phone: 617.253.3513

Gregory W. Wornell has been on the MIT faculty since 1991, where he is the Sumitomo Professor of Engineering in the Department of Electrical Engineering and Computer Science . He did his graduate work at MIT, and his undergraduate work at the University of British Columbia. In addition to leading the Signals, Information, and Algorithms Laboratory, he is also affiliated with the interlaboratory Center for Wireless Networking , which he co-directs. He also chairs Graduate Area I (Information and System Science, Integrated Electronic and Photonic Systems, Physical Science and Devices, and Bioelectrical Science and Engineering) within the department's doctoral program.

Greg's work lies where information meets the physical world, and emphasizes fundamental and novel research that is strongly connected to important emerging applications and technologies. Over the years, he has held visiting appointments at the (former) AT&T Bell Laboratories, Murray Hill, NJ, the University of California , Berkeley, CA, and Hewlett-Packard Laboratories, Palo Alto, CA. He has been involved in the Signal Processing and Information Theory societies of the IEEE in a variety of capacities, and maintains a number of close industrial relationships and activities. He has won a number of awards for both his research and teaching.

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Administrative Staff

Tricia O'Donnell
Office: 36-677
Phone: 617.253.2297

Tricia O'Donnell has been at MIT since 2002 as an administrative assistant in the lab, working closely with Professor Wornell and the students, staff, and visitors. She handles office administration for the lab, Prof. Wornell's courses, and the EECS Department's Graduate Area I.

Outside of MIT, Tricia's passion is figure skating. She has passed her Senior Gold Freestyle Test, and competed at National Collegiates and New England Regionals. She has been a professional figure skating instructor for 11 years, and coaches skaters at all levels, ages, and backgrounds. Her skaters have competed at the New England Regionals, Bay State Games, State Games of America, ISI Worlds, and many other events.

Just as with her experience in figure skating, Tricia enjoys being surrounded at MIT by individuals just as passionate about their endeavors, and the challenges and diversity that MIT has to offer.

In 2005, Tricia received an MIT Infinite Miles Award for her work at MIT.


Postdoctoral Scholars

Christos Thrampoulidis
Office: 36-699

Dr. Christos Thrampoulidis joined MIT in the Fall semester of 2016. He received his Ph.D and M.S. degree from the Dept. of Electrical Engineering at Caltech, and his diploma in Electrical and Computer Engineering from the University of Patras, Greece. His doctoral research studied the error performance of non-smooth convex optimization for the recovery of structured signals in high-dimensions. His research interests are at the interface of signal processing, optimization, and high-dimensional statistics.

Ankit Singh Rawat
Office: 36-673

Dr. Ankit Singh Rawat joined MIT in 2016 after completing a postdoc in the Computer Science Department at Carnegie Mellon University. Ankit received his PhD in Electrical and Computer Engineering from The University of Texas at Austin in 2015. His doctoral research was focused on designing efficient and reliable coding schemes for cloud storage systems.

More generally his research interests include coding theory, information theory, statistical machine learning, security & privacy, and neuro-inspired computing.


Graduate Students

Ganesh Ajjanagadde
Office: 36-667
Phone: 617.253.4987

Ganesh Ajjanadde completed his bachelors in electriccal engineering and computer science (EECS 6-2) in 2015 at MIT. His research interests include statistical inference, information theory, and signal processing. He is currently working on his MEng thesis research focused on classification problems.

Ganesh currently holds a Presidential Fellowship at MIT. While an undergraduate, he served as TA for 6.008.


Toros Arikan
Office: 36-667
Phone: 617.253.4987

Toros Arikan joined the PhD program at MIT in 2017, receiving a Presidential Fellowship. He completed his Bachelor's degree in Electrical and Computer Engineering and his Master's degree in Electrical Enginering at the University of Illinois at Urbana-Champaign, in 2014 and 2017 respectively. His research interests include communication, signal processing, and statistical inference.

Gary Lee
Office: 36-667
Phone: 617.253.4987

Gary Lee joined the PhD program at MIT in 2017. Prior to arriving at MIT, Gary was with the Institute for Infocomm Research at the Agency for Science and Technology (A*STAR) in Singapore. He has a Bachelors degree in electrical engineering from Stanford.

Joshua Lee
Office: 36-667
Phone: 617.253.4987

Joshua Lee entered the graduate program at MIT in 2015. He received his B.A.Sc. in Engineering Science, with a specialization in Electrical and Computer Engineering, from the University of Toronto. His research interests include applications of information theory and inference, and his research at MIT focuses on applications of probabilistic inference to problems in coding theory.

Joshua has received a number of awards, including the NSERC USRA (2013,2014) and the Irwin Mark Jacobs and Joan Klein Jacobs Presidential Fellowship (2015-2016).


Adam Yedidia
Office: 36-667
Phone: 617.253.4987

Adam Yedidia completed his Bachelor's degree at MIT in Mathematics and Computer Science (courses 18 and 6-3) in 2014. He completed his Master's degree at MIT in Computer Science in 2015. His research interests include machine learning, circuits, and statistical inference.

While a Master's student, Adam served as TA in 6.045 and 6.006.

Xuhong (Lisa) Zhang
Office: 36-683
Phone: 617.253.2121

Xuhong (Lisa) Zhang obtained her Bachelor of Arts and Master of Engineering degrees in Electrical and Information Engineering at Trinity College, Cambridge University. During her undergraduate program, she also studied at MIT in EECS (Course 6) for a year as a CME (Cambridge-MIT exchange) student. Her research interests include statistical inference, message passing algorithms and information theory.

Lisa was a Jardine Scholar from 2008-2012. She currently holds a Presidential Fellowship at MIT. She has also been an intern student at ARM Ltd., UK in the summer of 2011.

Abhin Shah
Office: 36-667
Phone:  617.253.4987

Abhin Shah joined the Ph.D. program at EECS, MIT in Fall 2018 with the Irwin Mark Jacobs and Joan Klein Jacobs Presidential Fellowship. He received his Bachelor's degree in Electrical Engineering from IIT Bombay. His research interests include statistical inference and applied probability.


Undergraduate Students


Visiting Scientists

Dr. Amichai Painsky
Office: 36-687

Dr. Amichai Painsky joined MIT in the spring of 2017. He is a Post-Doctoral fellow at the Israeli Center of Research Excellence in Algorithms, located at the Hebrew University of Jerusalem. Amichai received his B.Sc. in Electrical Engineering from Tel Aviv University (2007), his M.Eng. in Electrical Engineering from Princeton University (2009) and his Ph.D. in Statistics from Tel Aviv University (2016).

His research interests include data mining, machine learning, statistical learning and their connection to information theory.


Research Affiliates

Dr. Uri Erez

Dr. Uri Erez completed his postdoctoral studies at MIT in 2005, where he worked on problems of coding and communication.  Before coming to MIT he was at Tel-Aviv University, where he completed undergraduate degrees in mathematics and physics in 1996, and his masters and doctoral degrees in 1999 and 2003, respectively. He is currently on the faculty of the Electrical Engineering - Systems department at Tel Aviv University.

Uri has served as a consultant for a number companies, among them Lucent Technologies' Bell Laboratories, Tadiran-Systems and Ultracom. He received the Omicron Delta prize for his presentation at the 2000 Israel IEEE Convention. His research interests encompass information theory and digital communication.

Dr. Emin Martinian

Dr. Emin Martinian completed his undergraduate degree in electrical engineering and computer science at the University of California at, Berkeley in 1997. After a year and a half at the startup OPC Technologies, he joined the doctoral program at MIT in 1998, receiving the masters degree in 2000, and the doctoral degree in 2004. His masters research was in the area of multimedia authentication, and his doctoral thesis in the area of dynamic information and constraints in source and channel coding.   After completing his doctorate he led anindustrial research program at Mitsubishi Electric Research Laboratory (MERL) in Cambridge, MA.    He is now with Bain Capital, Boston, MA.

Emin served as a TA in 6.341. In addition, he co-founded 6.454, the department's advanced graduate seminar in communications, control, and signal processing, and has co-organized this seminar for three terms. In summer terms, he worked at Lucent Technologies' Bell Laboratories, Analog Devices, MERL, and has also served as a consultant to various start-ups. His broader research interests include digital communications and signal processing, especially information theory, error control codes, cryptography and image compression and authentication. While at MIT he held an NSF Graduate Fellowship, and received the Capocelli Award of the 2004 Data Compression Conference for the best student-authored paper.


Industrial Affiliate

Hiroyuki Ishii

Hiroyuki Ishii is an industrial research affiliate at MIT, where he is involved in problems of wireless system and network design. He obtained his master's degree in electronics and informatics from Toyama Prefectual University, Japan in 1996. Since then he has been with NEC Corporation in Tokyo, developing wireless communication systems and radio monitoring systems based on software-defined radio technologies. His research interests include architectures, protocols, modems, signal identification schemes and performance analysis for digital communication and monitoring systems. Hiroyuki has written a number of papers, and is a board member of the IEICE software-defined radio group.