5 papers
A Cascaded Unsupervised-Supervised NLP Pipeline for Detecting Accusatory Language in Public Procurement
Bryan Torres, Daniel Riofrío, José Vega-Sánchez +4
Public procurement involves the allocation of substantial financial resources; therefore, continuous oversight through audits, controls, and monitoring mechanisms is essential. How…
Outage Analysis of TAS-NOMA Systems With Multi-Antenna Users Over α-μ Fading
Fernando D. Almeida García, Maria C. Luna Alvarado, Lenin P. Jiménez Jiménez +5
This paper analyzes the outage performance of downlink NOMA systems with transmit antenna selection (TAS) and multi-antenna users over α-μ fading. Maximal-ratio combining (MRC) and…
Exploring Spatial Flexibility and Phase Design in Fluid Reconfigurable Intelligent Surfaces: A Physical Layer Security Perspective
J. D. Vega-Sánchez, V. H. Garzón Pacheco, N. V. Orozco Garzón +2
This work examines the secrecy outage probability (SOP) in Fluid Reconfigurable Intelligent Surfaces (FRIS) and contrasts their performance against two alternative RIS architecture…
Understanding the Role of Phase and Position Design in Fluid Reconfigurable Intelligent Surfaces
J. D. Vega-Sánchez, V. H. Garzón Pacheco, N. V. Orozco Garzón +2
Fluid Reconfigurable Intelligent Surfaces (FRISs) are gaining momentum as an improved alternative over classical RIS. However, it remains unclear whether their performance gains ca…
Reliable and Secure Communications Through Compact Ultra-Massive Antenna Arrays
José David Vega-Sánchez, Henry Ramiro Carvajal Mora, Nathaly Verónica Orozco Garzón +1
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 ma…