83 citations · 210 across the 18 of their papers we have counts for
6 papers · 1 filter
Tensor-based Channel Tracking for RIS-Empowered Multi-User MIMO Wireless Systems
Jide Yuan, George C. Alexandropoulos, Eleftherios Kofidis +2
The accurate estimation of Channel State Information (CSI) is of crucial importance for the successful operation of Multiple-Input Multiple-Output (MIMO) communication systems, esp…
Joint Channel Estimation / Data Detection in MIMO-FBMC/OQAM Systems - A Tensor-Based Approach
Eleftherios Kofidis, Christos Chatzichristos, Andre L. F. de Almeida
Filter bank-based multicarrier (FBMC) systems are currently being considered as a prevalent candidate for replacing the long established cyclic prefix (CP)-based orthogonal frequen…
A Unified Multicarrier Modulation Framework
Konstantinos Maliatsos, Eleftherios Kofidis, Athanasios Kanatas
Orthogonal frequency division multiplexing (OFDM) has been recently recognized as inadequate to meet the increased requirements of the next generation of communication systems. A n…
Preamble-based Channel Estimation in FBMC/OQAM Systems: A Time-Domain Approach
Eleftherios Kofidis
Filter bank-based multicarrier (FBMC) systems based on offset QAM (FBMC/OQAM) have recently attracted increased interest in several applications due to their enhanced flexibility,…
Preamble-based Channel Estimation in OFDM/OQAM Systems: A Review
E. Kofidis, D. Katselis, A. Rontogiannis +1
Filter bank-based multicarrier communications (FBMC) have recently attracted increased interest in both wired (e.g., xDSL, PLC) and wireless (e.g., cognitive radio) applications, d…
Preamble-Based Channel Estimation for CP-OFDM and OFDM/OQAM Systems: A Comparative Study
Dimitris Katselis, Eleftherios Kofidis, Athanasios Rontogiannis +1
In this paper, preamble-based least squares (LS) channel estimation in OFDM systems of the QAM and offset QAM (OQAM) types is considered, in both the frequency and the time domains…