18 citations · 69 across the 14 of their papers we have counts for
14 papers · 1 filter
Beamfocusing Capabilities of a Uniform Linear Array in the Holographic Regime
Xavier Mestre, Adrian Agustin
The use of multiantenna technologies in the near field offers the possibility of focusing the energy in spatial regions rather than just in angle. The objective of this paper is to…
Exploiting Multiple Polarizations in Extra Large Holographic MIMO
Adrian Agustin, Xavier Mestre
The proliferation of large multi-antenna configurations operating in high frequency bands has recently challenged the conventional far-field, rich-scattering paradigm of wireless c…
Available Degrees of Spatial Multiplexing of a Uniform Linear Array with Multiple Polarizations: A Holographic Perspective
Xavier Mestre, Adrian Agustin, David Sarda
The capabilities of multi-antenna technology have recently been significantly enhanced by the proliferation of extra large array architectures. The high dimensionality of these sys…
Optimizing Wireless Discontinuous Reception via MAC Signaling Learning
Adriano Pastore, Adrián Agustín de Dios, Álvaro Valcarce
We present a Reinforcement Learning (RL) approach to the problem of controlling the Discontinuous Reception (DRX) policy from a Base Transceiver Station (BTS) in a cellular network…
Near-Field Beamfocusing with Polarized Antennas
Adrian Agustin, Xavier Mestre
One of the most relevant challenges in future 6G wireless networks is how to support a massive spatial multiplexing of a large number of user terminals. Recently, extremely large a…
On the Degrees of Freedom of the MISO Interference Broadcast Channel with Delayed CSIT
Marc Torrellas, Adrian Agustin, Josep Vidal
The Maddah-Ali and Tse (MAT) scheme is a linear precoding strategy that exploits Interference Alignment and perfect, but delayed, channel state information at the transmitters (del…
Receive Spatial Modulation for Massive MIMO Systems
Ahmed Raafat, Adrian Agustin, Josep Vidal
In this paper, we consider the downlink of a massive multiple-input-multiple-output (MIMO) single user transmission system operating in the millimeter wave outdoor narrowband chann…
Efficient use of paired spectrum bands through TDD small cell deployments
A. Agustin, S. Lagen, J. Vidal +4
Traditionally, wireless cellular systems have been designed to operate in Frequency Division Duplexing (FDD) paired bands that allocates the same amount of spectrum for both downli…
DoF-Delay Trade-Off for the -user MIMO Interference Channel With Delayed CSIT
Marc Torrellas, Adrian Agustin, Josep Vidal
The degrees of freedom (DoF) of the -user multiple-input multiple-output (MIMO) interference channel are studied when perfect, but delayed channel state information is available…
Retrospective Interference Alignment for the MIMO Interference Broadcast Channel
Marc Torrellas, Adrian Agustin, Josep Vidal
The degrees of freedom (DoF) of the multiple-input multiple-output (MIMO) Interference Broadcast Channel (IBC) with 2 cells and 2 users per cell are investigated when only delayed…
The DoF of the 3-user () MIMO Interference Channel
Marc Torrellas, Adrian Agustin, Josep Vidal +1
The \emph{degrees of freedom} (DoF) of the 3-user multiple-input multiple-output (MIMO) interference channel (IC) with full channel state information (CSI) and constant channel coe…
Retrospective Interference Alignment for the 3-user MIMO Interference Channel with delayed CSIT
Marc Torrellas, Adrian Agustin, Josep Vidal
The degrees of freedom (DoF) of the 3-user multiple input multiple output interference channel (3-user MIMO IC) are investigated where there is delayed channel state information at…
On the Degrees of freedom of the K-user MISO Interference Channel with imperfect delayed CSIT
Marc Torrellas, Adrian Agustin, Josep Vidal
This work investigates the degrees of freedom (DoF) of the K-user multiple-input single-output (MISO) interference channel (IC) with imperfect delayed channel state information at…
Degrees of Freedom Region of the MIMO X channel with an Arbitrary Number of Antennas
Adrian Agustin, Josep Vidal
We characterize the total degrees of freedom (DoF) of the full-rank MIMO X channel with arbitrary number of antennas at each node. We elucidate that the existing outer bound is tig…