242 citations · 365 across the 28 of their papers we have counts for
5 papers · 1 filter
STAR-RIS Assisted Cell-Free Massive MIMO System Under Spatially-Correlated Channels
Anastasios Papazafeiropoulos, Hien Quoc Ngo, Pandelis Kourtessis +1
This paper investigates the performance of downlink simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS)-assisted cell-free (CF) massive multiple-…
Max-Min SINR Analysis of STAR-RIS Assisted Massive MIMO Systems with Hardware Impairments
Anastasios Papazafeiropoulos, Pandelis Kourtessis, Symeon Chatzinotas
Reconfigurable intelligent surface (RIS) has emerged as a cost-effective solution to improve wireless communication performance through just passive reflection. Recently, the conce…
Cooperative RIS and STAR-RIS assisted mMIMO Communication: Analysis and Optimization
Anastasios Papazafeiropoulos, Ahmet M. Elbir, Pandelis Kourtessis +2
Reconfigurable intelligent surface (RIS) has emerged as a cost-effective and promising solution to extend the wireless signal coverage and improve the performance via passive signa…
Achievable Rate of a STAR-RIS Assisted Massive MIMO System Under Spatially-Correlated Channels
Anastasios Papazafeiropoulos, Le-Nam Tran, Zaid Abdullah +2
Reconfigurable intelligent surfaces (RIS)-assisted massive multiple-input multiple-output (mMIMO) is a promising technology for applications in next-generation networks. However, r…
Near-Field Terahertz Communications: Model-Based and Model-Free Channel Estimation
Ahmet M. Elbir, Wei Shi, Anastasios K. Papazafeiropoulos +2
Terahertz (THz) band is expected to be one of the key enabling technologies of the sixth generation (6G) wireless networks because of its abundant available bandwidth and very narr…