168 citations · 219 across the 10 of their papers we have counts for
11 papers
Greedy and Transformer-Based Multi-Port Selection for Slow Fluid Antenna Multiple Access
Darian Perez-Adan, Jose P. Gonzalez-Coma, F. Javier Lopez-Martinez +1
We address the port-selection problem in fluid antenna multiple access (FAMA) systems with multi-port fluid antenna (FA) receivers. Existing methods either achieve near-optimal spe…
User Selection in Near-Field Gigantic MIMO Systems with Modular Arrays
José P. González-Coma, Santiago Fernández, F. Javier López-Martínez
Modular Arrays (MAs) are a promising architecture to enable multi-user communications in next-generation multiple-input multiple-output (MIMO) systems based on extra-large (XL) or…
A Rank-Constrained Coordinate Ascent Approach to Hybrid Precoding for the Downlink of Wideband Massive (MIMO) Systems
José P. González-Coma, Óscar Fresnedo, Luis Castedo
An innovative approach to hybrid analog-digital precoding for the downlink of wideband massive MIMO systems is developed. The proposed solution, termed Rank-Constrained Coordinate…
Design of Linear Precoders for Correlated Sources in MIMO Multiple Access Channels
P. Suárez-Casal, J. P. González-Coma, O. Fresnedo +1
This work focuses on distributed linear precoding when users transmit correlated information over a fading Multiple-Input and Multiple-Output Multiple Access Channel. Precoders are…
Channel Estimation and Hybrid Precoding for Frequency Selective Multiuser mmWave MIMO Systems
J. P. González-Coma, J. Rodríguez-Fernández, N. González-Prelcic +2
Configuring the hybrid precoders and combiners in a millimeter wave (mmWave) multiuser (MU) multiple-input multiple-output (MIMO) system is challenging in frequency selective chann…
Alternating Minimization for Wideband Multiuser IRS-aided MIMO Systems under Imperfect CSI
Darian Pérez-Adán, Michael Joham, Óscar Fresnedo +3
This work focuses on wideband intelligent reflecting surface (IRS)-aided multiuser MIMO systems. One of the major challenges of this scenario is the joint design of the frequency-d…
Joint User Scheduling and Precoding for XL-MIMO Systems with Imperfect CSI
Jose P. Gonzalez-Coma, F. Javier Lopez-Martinez, Luis Castedo
We propose an algorithm for joint precoding and user selection in multiple-input multiple-output systems with extremely-large aperture arrays, assuming realistic channel conditions…
Leakage Subspace Precoding and Scheduling for Physical Layer Security in Multi-User XL-MIMO Systems
Gonzalo J. Anaya-Lopez, Jose P. Gonzalez-Coma, F. Javier Lopez-Martinez
We investigate the achievable secrecy sum-rate in a multi-user XL-MIMO system, on which user distances to the base station become comparable to the antenna array dimensions. We sho…
Hybrid LISA for Wideband Multiuser Millimeter Wave Communication Systems under Beam Squint
José P. González-Coma, Wolfgang Utschick, Luis Castedo
This work jointly addresses user scheduling and precoder/combiner design in the downlink of a wideband millimeter wave (mmWave) communications system. We consider Orthogonal Freque…
QoS Constrained Power Minimization in the Multiple Stream MIMO Broadcast Channel
José P. González-Coma, Michael Joham, Paula M. Castro +1
This work addresses the design of optimal linear transmit filters for the Multiple Input-Multiple Output (MIMO) Broadcast Channel (BC) when several spatial streams are allocated to…
QoS Constrained Power Minimization in the MISO Broadcast Channel with Imperfect CSI
José P. González-Coma, Michael Joham, Paula M. Castro +1
We consider the design of linear precoders and receivers in a Multiple-Input Single-Output (MISO) Broadcast Channel (BC). We aim at minimizing the transmit power while fullfiling a…