RESS-IoT: A Scalable Energy-Efficient MAC Protocol for Direct-to-Satellite IoT. - Raydel Ortigueira; Juan A. Fraire; Alex Becerra; Tomás Ferrer; Sandra Céspedes (IEEE Access, 2021)

DtS-IoT Resource Allocation Analysis Framework: Assessing DQ and RESS-IoT. - Jason Gerard; Juan A. Fraire; Raydel Ortigueira; Sandra Céspedes (WF-IoT, 2024)

Enhancing LEO direct-to-satellite channel modeling with the shadowing effect via K-distribution. - Tomás Núñez González; Cesar A. Azurdia-Meza; Raydel Ortigueira; Samuel Montejo Sánchez; Javier A. Ordenes-Pinto; Melissa Eugenia Diago-Mosquera; Sandra Céspedes (ICT Express, 2025)