Javier Álvarez-Vizoso — accepted AI-conference papers

2024

Hardware Impairments-Aware Design of noncoherent Grassmannian Constellations

Diego Cuevas, Javier Álvarez-Vizoso, Mikel Gutiérrez, Ignacio Santamaría, Vít Tucek, Gunnar Peters

ICASSP 2024accepted

In this paper, we propose a robust algorithm for designing unstructured Grassmannian constellations for noncoherent MIMO communications that accounts for the effect of hardware impairments (HWIs) such as I/Q imbalance (IQI) and carrier frequency offset (CFO). The algorithm uses the minimum diversity…

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2023

Noncoherent Multiuser Grassmannian Constellations for the Mimo Multiple Access Channel

Javier Álvarez-Vizoso, Diego Cuevas, Carlos Beltrán, Ignacio Santamaría, Vít Tucek, Gunnar Peters

ICASSP 2023accepted

We consider the design of multiuser constellations for a multiple access channel (MAC) with K users, with M antennas each, that transmit simultaneously to a receiver equipped with N antennas through a Rayleigh block-fading channel, when no channel state information (CSI) is available to either the t…

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