Research
June 4th, 2024 - Lingjia Liu (center), professor of electrical and computer engineering and director of Wireless@Virginia Tech in one of Wireless@Virginia Tech's hardware labs in Durham Hall. (Photo by Luke Hayes/Virginia Tech)
Lingjia Liu has opportunities to work on both fundamental research through National Science Foundation, U.S. Air Force Office of Scientific Research, and U.S. Air Force Research Laboratory funded projects and applied research through making contributions to 4G cellular standards (3GPP LTE/LTE-Advanced and IEEE 802.16m).
This unique experience allows him to be able to identify and solve problems that have both theoretical significance and practical importance.
In general, Lingjia Liu conducts research in probability theory, queueing theory, information theory, signal processing, and in their applications to wireless communication systems and networks.
His current research focuses on inter-cell interference management, delay-sensitive communications over wireless networks, energy-efficient wireless communication, and enabling technologies for 5G/6G networks.
Currently, his research is sponsored by Air Force Office of Scientific Research, Air Force Research Laboratory, National Science Foundation, National Spectrum Consortium, InterDigital, and Samsung Research America. His research efforts have been supported in part by over $70 million in research funding, with Lingjia Liu serving as the principal investigator on over $8 million in federal grants.
Ongoing Projects
National Science Foundation
Delay-Sensitive Hybrid Broadcast/Unicast Traffic over Heterogeneous Cellular Networks
Hybrid|NSF/ECCS-1802710
Sole PI (from the leading institution) | 08/10/2017-05/31/2021
Enabling Spectrum and Energy-Efficient Dynamic Spectrum Access Wireless Networks using Neuromorphic Computing
SpecEES|NSF/ECCS-1811497
PI (from the leading institution) | 08/10/2017-07/31/2023
Spatial Spectrum Sensing-Based Device-to-Device (D2D) Networks
SSS|NSF/CNS-1811720
Sole PI | 08/10/2017-08/31/2023
RINGS: Learning-Enabled Ground and Air Integrated Networks (GAINs)
RINGS|NSF/CNS-2148212
PI (from the leading institution) 08/2022 - 07/2025
RTML: Small: Achieving Real-Time and Energy-efficient Computing for 5G Networks (ARTEN): A Deep Reservoir Computing Approach
RTML|NSF/CCF-1937487
Co-PI | 10/01/2019-09/30/2024
MLWiNS: Deep Neural Networks Meet Physical Layer Communications - Learning with Knowledge of Structure
MLWiNS|NSF/CCF-2003059
PI (from the leading institution) | 08/01/2020-07/31/2024
SWIFT: Intelligent Dynamic Spectrum Access (IDEA): An Efficient Learning Approach to Enhancing Spectrum Utilization and Coexistence
SWIFT|NSF/ECCS-2128594
PI (from the leading institution) | 09/2022 - 08/2025
National Spectrum Consortium
Digital Beam-forming and Interference Mitigation for MIMO Systems
PI | 10/18/2018-09/30/2021
Resource Allocation Optimization for Dynamic Spectrum Access (DSA) Network
PI | 09/01/2017-08/30/2020
Air Force Research Laboratory
Cooperative Routing Meets Swarm UAVs
CoopUAV | FA8750-18-1-0175
Sole PI | 10/01/2018 - 03/25/2021
Samsung Research America
6G | Enabling Technologies for Beyond-5G and 6G Networks
Sole PI | 01/01/2019 - 12/31/2019
Completed Projects
Heterogeneous Traffic over Heterogeneous Relay Networks
BRIGE|NSF/ECCS-1228071
Sole PI | 09/01/2012-08/31/2016
Fundamentals of Energy-Efficiency in Delay-Sensitive Wireless Communications
Coding|NSF/CCF-1422241
PI | 08/01/2014-07/31/2016
Student Travel Support for the IEEE Globecom 2015
GCSTG|NSF/CNS-1547774
Sole PI | 08/15/2015-07/31/2016
Delay-Sensitive Communications over Aerial Networks
AFOSR Summer Faculty Program
Sole PI | 05/13/2013 - 07/19/2013
MIMO Cognitive Radio Networks
AFOSR Summer Faculty Program
Sole PI | 05/19/2014 - 08/01/2014
Cooperative Routing for Dynamic Aerial Layer Networks
MIA|FA8750-14-1-0077
Sole PI | 02/10/2014 - 09/30/2017
Neuromorphic Computing for MIMO Sysrems
Computing|FA8750-15-1-0052
Co-PI (PI: Yang Yi) | 02/25/2015 - 09/30/2016
Interference Alignment for MIMO Cognitive Radio Networks
AFRL Visiting Faculty Program
Sole PI | 05/25/2015 - 12/31/2015
Dynamic Spectrum Access with Limited Sensing Capability
FA8750-14-R925539
Sole PI | 09/01/2014 - 12/31/2014
Spectrum Sensing in Dynamic Spectrum Access Networks
FA8750-13-2-0115
Sole PI | 07/29/2013 - 10/31/2013
Machine Learning for Wireless Communications
Sole PI | 01/01/2018 - 12/31/2018
3D Massive MIMO/FD-MIMO: DoA Estimation and Capacity Analysis
MIMO|IND007-06-57
Sole PI | 10/01/2012 - 10/18/2017
HARQ over Finite Transport Block Transmissions
IND007-19-93
PI (Co-PI: Erik Perrins) | 05/01/2014 - 10/30/2016
Demand Response Optimization for Smart Grid Networks
General Research Award
Sole PI | 09/01/2013 - 08/31/2014
Delay-Sensitive Traffic over Heterogeneous Relay Networks
New Faculty General Research Award
Sole PI | 06/01/2012 - 08/15/2012