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Author

G. Guvensen

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2 papers indexed here

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Preprint Oct 2026

FTN Signaling: Spectral Efficiency from BPSK to 16-QAM

Faster-than-Nyquist (FTN) signaling can improve spectral efficiency by transmitting symbols closer together than the Nyquist limit, at the cost of additional inter-symbol interference (ISI). In this letter, we study the finite-alphabet symbol-wise achievable information rate (AIR) of FTN signaling for BPSK, QPSK, and 1...

Emre Çerçi, A. Çiçek, Melda Yuksel et al. · 0 citations
2026

Two-Stage Channel Parameters and Covariance Estimation for RIS-Aided MIMO With Angular Dispersion

In this study, we propose a cascaded channel covariance matrix (C-CCM) estimation framework for millimeter-wave (mmWave) reconfigurable intelligent surface (RIS)-aided multiple-input multiple-output (MIMO) systems that explicitly accounts for the angular spread (angular dispersion) effect. We derive analytical expressi...

Hakan Ozen, G. Guvensen · 0 citations

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