Spatial Based Pilot Allocation (SBPA) in Crowded Massive MIMO Systems. - Abolghasem Afshar; Vahid Tabataba Vakili (Wirel. Pers. Commun., 2021)

Active User Detection and Channel Estimation for Spatial-Based Random Access in Crowded Massive MIMO Systems via Blind Super-Resolution. - Abolghasem Afshar; Vahid Tabataba Vakili; Sajad Daei (IEEE Signal Process. Lett., 2022)

A novel blind spatial-based random access to pilots (BSB-RAP) in overloaded massive MIMO systems. - Abolghasem Afshar; Vahid Tabataba Vakili; Sajad Daei (Phys. Commun., 2023)