Junil Choi (Senior Member, IEEE) received the B.S. (Hons.) and M.S. degrees in electrical engineering from Seoul National University in 2005 and 2007, respectively, and the Ph.D. degree in electrical and computer engineering from Purdue University in 2015. 

He is currently working as a tenured associate professor with the School of Electrical Engineering, KAIST. From 2007 to 2011, he was a member of technical staff at the Samsung Advanced Institute of Technology (SAIT) and Samsung Electronics Company Ltd., South Korea, where he contributed to advanced codebook and feedback framework designs for the 3GPP LTE/LTE-Advanced and IEEE 802.16m standards. Before joining KAIST, he was a post-doctoral fellow at The University of Texas at Austin from 2015 to 2016 and an assistant professor at POSTECH from 2016 to 2019. His research interests include the design and analysis of massive MIMO, mmWave communications, satellite communications, visible light communications, and communication systems using machine-learning techniques.

Dr. Choi was a co-recipient of the 2022 IEEE Vehicular Technology Society Best Vehicular Electronics Paper Award, the 2021 IEEE Vehicular Technology Society Neal Shepherd Memorial Best Propagation Award, the 2019 IEEE Communications Society Stephen O. Rice Prize, the 2015 IEEE Signal Processing Society Best Paper Award, and the 2013 Global Communications Conference (GLOBECOM) Signal Processing for Communications Symposium Best Paper Award. He was awarded the Michael and Katherine Birck Fellowship from Purdue University in 2011, the Korean Government Scholarship Program for Study Overseas (2011–2013), the Purdue University ECE Graduate Student Association (GSA) Outstanding Graduate Student Award in 2013, the Purdue College of Engineering Outstanding Student Research Award in 2014, the IEEE ComSoc AP Region Outstanding Young Researcher Award in 2017, the NSF Korea and Elsevier Young Researcher Award in 2018, the KICS Haedong Young Researcher Award in 2019, and the IEEE Communications Society Communication Theory Technical Committee Early Achievement Award in 2021. He is an IEEE Vehicular Technology Society Distinguished Lecturer, an Area Editor of IEEE Open Journal of the Communications Society and an Associate Editor of IEEE Transactions on Wireless Communications and IEEE Transactions on Communications.

KAIST

Tenured Associate Professor    Mar. 2024 - present.

Associate Professor                   Sep. 2021 - Feb. 2024

Assistant Professor                        Aug. 2019 - Aug. 2021

POSTECH

Assistant Professor Jul. 2016 - Aug. 2019.

The University of Texas at Austin

Postdoctoral Fellow Apr. 2015 - Jun. 2016.

• Managed Communications and Radar-Supported Transportation Operations and Planning (CAR-STOP) project.

Purdue University

Graduate Research Assistant Aug. 2011 - Mar. 2015.

• Feedback and precoding design for massive MIMO systems, 2013 - 2015.

• Space-time beamforming quantization with a large dimension, 2012 - 2013.

• Differential codebook design for dual-polarized antenna scenario, 2011 - 2012.

• Communication systems using channel output feedback, 2011 - 2012.

Digital Media Research Center (DMC) Samsung Electronics

Member of Technical Staff Jan. 2011 - May. 2011.

• Standard activities on wireless power transfer systems.

Samsung Advanced Institute of Technology (SAIT) Samsung Electronics

Member of Technical Staff Feb. 2007 - Jan. 2011.

• 802.16m and 3GPP standard activities.

Seoul National University

Graduate Research Assistant Jan. 2006 - Feb. 2007.

• Uplink scheduling for distributive antenna systems.

Seoul National University

Graduate Teaching Assistant Mar. 2005 - Dec. 2005.

• Introduction to Communications and Introduction to Random Variables Processes.

• Selected as a recipient of 2017 IEEE AP Region Outstanding Young Researcher Award.

• Recognized as an exemplary reviewer of IEEE Transactions on Communications in 2017.

• The coauthored paper "Advanced Quantizer Designs for FDD-based FD-MIMO Systems Using Uniform Planar Arrays" won Bronze Prize in Samsung's 23rd Humantech Paper Contest.

• Joined POSTECH as an assistant professor in July 2016.

• Recognized as an exemplary reviewer of IEEE Transactions on Communications in 2016.

• Recognized as an exemplary reviewer of IEEE Wireless Communications Letters in 2015.

• Received 2015 IEEE Signal Processing Society Best Paper Award.

• Two papers on massive MIMO appeared in IEEE Best Readings Topics on Massive MIMO.​

• Received Purdue University College of Engineering Outstanding Research Award in Apr. 2014.

• Recognized as an exemplary reviewer of IEEE Wireless Communications Letters in 2013.

• Received Purdue University ECE GSA Outstanding Graduate Student Award in Dec. 2013.

• Received the Signal Processing for Communications Symposium Best Paper Award at 2013 IEEE Global Communications Conference (GLOBECOM).