972 citations · 3.9k across the 79 of their papers we have counts for
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Fluid Antenna with Linear MMSE Channel Estimation for Large-Scale Cellular Networks
Christodoulos Skouroumounis, Ioannis Krikidis
The concept of reconfigurable fluid antennas (FA) is a potential and promising solution to enhance the spectral efficiency of wireless communication networks. Despite their many ad…
Global Optimization of Energy Efficiency in IRS-Aided Communication Systems via Robust IRS-Element Activation
Christos N. Efrem, Ioannis Krikidis
In this paper, we study an intelligent reflecting surface (IRS) assisted communication system with single-antenna transmitter and receiver, under imperfect channel state informatio…
Impact of Channel Aging on Reconfigurable Intelligent Surface Aided Massive MIMO Systems with Statistical CSI
Anastasios Papazafeiropoulos, Ioannis Krikidis, Pandelis Kourtessis
The incorporation of reconfigurable intelligent surface (RIS) into massive multiple-input-multiple-output (mMIMO) systems can unleash the potential of next-generation networks by i…
Vector Perturbation Channel Inversion for SWIPT MU-MISO Systems
Ioannis Krikidis, Constantinos Psomas, Symeon Chatzinotas
This letter investigates the employment of vector-perturbation (VP) precoding to convey simultaneously information and energy in multiple-user multiple-input single-output (MU-MISO…
Coverage Probability of STAR-RIS assisted Massive MIMO systems with Correlation and Phase Errors
Anastasios Papazafeiropoulos, Zaid Abdullah, Pandelis Kourtessis +2
In this paper, we investigate a simultaneous transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) assisting a massive multiple-input multiple-output (mMIMO) sy…
On the Level Crossing Rate of Fluid Antenna Systems
Priyadarshi Mukherjee, Constantinos Psomas, Ioannis Krikidis
Multiple-input multiple-output (MIMO) technology has significantly impacted wireless communication, by providing extraordinary performance gains. However, a minimum inter-antenna s…