XLIV Simpósio Brasileiro de Telecomunicações e Processamento de Sinais

Collar-mounted inertial measurement units (IMUs) offer practical canine activity monitoring, though neck signals only indirectly represent paw-ground contact. This study validated a proprietary collar IMU step counter against manual video annotation using 15 walking/trotting bouts from 11 dogs. The video reference recorded 357 steps versus the IMU's 355....

This paper investigates a FAS-RSMA downlink under QoS-constrained sum-rate maximization. A traditional single-antenna base station serves FAS-equipped receivers that select the port with the largest instantaneous channel power gain under Jakes spatial correlation. The number of ports N and normalized aperture W jointly shape the effective gains, RSMA...

Elastic optical networks (EONs) require online routing, modulation, and spectrum assignment (RMSA) under spectrum-continuity and physical-layer constraints. This paper evaluates compact large language models (LLMs) as bounded arbiters that select among quality of transmission (QoT)-feasible candidate actions generated by classical heuristics. Candidate...

Lung ultrasound (LUS) videos contain temporal structure beyond static image appearance. This work introduces Complexity Pursuit (CP) descriptors for compact video-level analysis of LUS structural dynamics. Forty-six public videos (COVID-19, healthy, bacterial or viral pneumonia) were converted into pixel-time matrices, PCA-whitened subspaces, and CP...

The development of visual attention models for immersive environments is essential for virtual reality-based systems. In this work, we analyze the convergence of viewports in 360º videos using the Intersection over Union (IoU) metric to quantify the overlap between regions viewed by different observers. Using eyetracking data from the PAVS10K database...

This work discusses user association methods in the 6G era such as maximum-SINR method and the minimum-distance method, and proposes a decentralized, non-cooperative game-theoretic approach to balance the AP load and penalize congestion by introducing a utility function that weighs individual link quality against network crowding.

This paper presents a numerical study of four printed antennas for millimeter-wave operation around 40 GHz. Two single-element models are compared with two 10-element linear arrays designed to increase antenna gain. The antennas were evaluated through electromagnetic simulations in Ansys HFSS, considering the reflection coefficient and total-gain...

Este trabalho avalia o desempenho de sistemas ópticos de transmissão no espaço livre (FSO) para redes 6G baseadas em arquitetura fiber-wireless (FiWi). O desempenho é analisado em dois cenários: modulação de intensidade com detecção direta (IM-DD); e detecção coerente com diferentes modulações digitais. A arquitetura é analisada sob diferentes condições...

Reconfigurable Intelligent Surfaces (RISs) are commonly analyzed under the assumption that the base-station-RIS and RIS-user-equipment hops are statistically independent. This assumption can be inaccurate when the two hops interact with common scatterers or clusters, producing inter-hop correlation in the RIS-side angular support. This paper investigates...

Electrical impedance tomography (EIT) is often formulated as an inverse problem of reconstructing internal conductivity distribution from boundary-voltage measurements. In contrast to conventional image reconstruction approaches, this work addresses a supervised task classification of the shape of a single inclusion directly from experimentally acquired...