Distributed-MIMO Based ISAC Systems and THz Hardware Impairments

Venkatesh Tentu, Postdoctoral Associate, NYUAD

Biography: Venkatesh Tentu is a Postdoctoral Associate at the NYU Abu Dhabi Wireless Center. He received his integrated M.Tech and Ph.D. in Electrical Engineering from the Indian Institute of Technology (IIT) Kanpur in 2024 and was previously a Postdoctoral Researcher at Chalmers University of Technology, Sweden. His research interests include distributed MIMO, ISAC, and optimization techniques for beyond 5G/6G systems.

Abstract:  This seminar presents research on (i) distributed multiple-input multiple-output (D-MIMO) based integrated sensing and communication (ISAC) systems and (ii) transmitter hardware impairments in terahertz (THz) communications. The first part introduces a D-MIMO ISAC framework in which multiple phase-synchronized access points (APs) jointly serve user equipment (UE) while simultaneously detecting multiple targets. A two-stage sensing approach combining non-coherent and coherent maximum-likelihood (ML) estimation is presented, along with adaptive AP mode-selection strategies that balance downlink spectral efficiency and sensing coverage. The second part examines our current research on the impact of transmitter hardware impairments in THz communications systems, focusing on digital-to-analog converter (DAC)-induced distortions such as phase noise and nonlinearities, and their impact on the system performance.