3 papers
eess.SP2024
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…
cs.IT2023
Resource Efficient 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 analog over-the-air (OTA) computation framework to address the demanding requirements of the uplink (UL) fronthaul between the access points (…
cs.IT2023
Data-Driven Robust Beamforming for Initial Access
Sai Subramanyam Thoota, Joao Vieira, Erik G. Larsson
We consider a robust beamforming problem where large amount of downlink (DL) channel state information (CSI) data available at a multiple antenna access point (AP) is used to impro…