4 papers
Repeater-Aided Over-the-Air Phase Synchronization in Distributed MIMO
Unnikrishnan Kunnath Ganesan, Sai Subramanyam Thoota, Erik G. Larsson
Phase synchronization of access points (APs) in a distributed multiple-input multiple-output (D-MIMO) system is critical to leverage the performance benefits of D-MIMO. Existing ov…
Joint Sensing and Bi-Directional Communication with Dynamic TDD Enabled Cell-Free MIMO
Anubhab Chowdhury, Sai Subramanyam Thoota, Erik G. Larsson
This paper studies integrated sensing and communication (ISAC) with dynamic time division duplex (DTDD) cell-free (CF) massive multiple-input multiple-output~(mMIMO) systems. DTDD…
Over-the-Air Fronthaul Signaling for Uplink Cell-Free Massive MIMO Systems
Zakir Hussain Shaik, Sai Subramanyam Thoota, Emil Björnson +1
We propose a novel resource-efficient over-the-air(OTA) computation framework to address the huge fronthaul computational and control overhead requirements in cell-free massive mul…
A Flexible Framework for Grant-Free Random Access in Cell-Free Massive MIMO Systems
Sai Subramanyam Thoota, Erik G. Larsson
We propose a novel generalized framework for grant-free random-access (GFRA) in cell-free massive multiple input multiple-output systems where multiple geographically separated acc…