Zobrazeno 1 - 10
of 11 149
pro vyhledávání: '"A. López Martínez"'
Autor:
Vega-Sánchez, José David, Mora, Henry Ramiro Carvajal, Garzón, Nathaly Verónica Orozco, López-Martínez, F. J.
Compact Ultramassive Antenna Array (CUMA) is a pioneering paradigm that leverages the flexibility of the Fluid Antenna System (FAS) to enable a simple multiple access scheme for massive connectivity without the need for precoding, power control at th
Externí odkaz:
http://arxiv.org/abs/2409.15164
Autor:
Ghadi, Farshad Rostami, Wong, Kai-Kit, Kaveh, Masoud, Lopez-Martinez, F. Javier, New, Wee Kiat, Xu, Hao
This paper examines the impact of emerging fluid antenna systems (FAS) on reconfigurable intelligent surface (RIS)-aided secure communications. Specifically, we consider a classic wiretap channel, where a fixed-antenna transmitter sends confidential
Externí odkaz:
http://arxiv.org/abs/2408.14969
Autor:
Ghadi, Farshad Rostami, Wong, Kai-Kit, Lopez-Martinez, F. Javier, Shin, Hyundong, Hanzo, Lajos
This paper investigates a two-user downlink system for integrated sensing and communication (ISAC) in which the two users deploy a fluid antenna system (FAS) and adopt the nonorthogonal multiple access (NOMA) strategy. Specifically, the integrated se
Externí odkaz:
http://arxiv.org/abs/2408.04724
This article investigates the qualitative aspects of dark solitons of one-dimensional Gross-Pitaevskii equations with general nonlocal interactions, which correspond to traveling waves with subsonic speeds. Under general conditions on the potential i
Externí odkaz:
http://arxiv.org/abs/2408.03870
Autor:
Lopez-Martinez, Daniel
Generative AI (GenAI) models have demonstrated remarkable capabilities in a wide variety of medical tasks. However, as these models are trained using generalist datasets with very limited human oversight, they can learn uses of medical products that
Externí odkaz:
http://arxiv.org/abs/2406.16455
We study for a dynamical system $f:X\longrightarrow X$ some of the principal topological recurrence-kind properties with respect to the induced maps $\overline{f}:\mathcal{K}(X)\longrightarrow\mathcal{K}(X)$, on the hyperspace of non-empty compact su
Externí odkaz:
http://arxiv.org/abs/2406.15826
Autor:
Fernández, Santiago, Bailón-Martínez, J. Alfonso, Galeote-Cazorla, Juan E., López-Martínez, F. Javier
We introduce and characterize the operational diversity order (ODO) in fading channels, as a proxy to the classical notion of diversity order at any arbitrary operational signal-to-noise ratio (SNR). Thanks to this definition, relevant insights are b
Externí odkaz:
http://arxiv.org/abs/2405.09336
Autor:
Ghadi, Farshad Rostami, Wong, Kai-Kit, Lopez-Martinez, F. Javier, New, Wee Kiat, Xu, Hao, Chae, Chan-Byoung
This paper investigates the performance of physical layer security (PLS) in fluid antenna-aided communication systems under arbitrary correlated fading channels. In particular, it is considered that a single fixed-antenna transmitter aims to send con
Externí odkaz:
http://arxiv.org/abs/2402.05722
We construct continuous (and even invertible) linear operators acting on Banach (even Hilbert) spaces whose restrictions to their respective closed linear subspaces of chain recurrent vectors are not chain recurrent operators. This construction compl
Externí odkaz:
http://arxiv.org/abs/2402.01377
Autor:
López-Martínez, Antoni
Publikováno v:
Results in Mathematics, Volume 79, article number 185, (2024)
Motivated by recent investigations of Sophie Grivaux and \'Etienne Matheron on the existence of invariant measures in Linear Dynamics, we introduce the concept of locally bounded orbit for a continuous linear operator $T:X\longrightarrow X$ acting on
Externí odkaz:
http://arxiv.org/abs/2401.13367