Patents

Chapters

1. D. Egea-Roca, F. Fabra, A. Xhafa, J. A. Lopez-Salcedo, G. Seco-Granados, "Time of Arrival and Time Difference of Arrival", chapter in Localization in Wireless Networks: Technologies and Applications, N. Saeed, M. A. Khan, editors, Wiley-IEEE Press, Aug. 2026.
2. A. Xhafa, D. Egea-Roca, F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, "AoA Localization and Waveform desing", chapter in COST Action INTERACT WG2 Whitepaper on Signal Processing and Localization, A. Burr, A. Garcia Armada, C. Smeenk, Y. Miao (Editors), , Oct. 2024.

Journals

1. A. Xhafa, F. Fabra, D. Egea-Roca, J. A. Lopez-Salcedo, G. Seco-Granados, "Experimental Investigation of AoA Estimation and Antenna Calibration with 5G NR signals using USRP Devices", IEEE Transactions on Instrumentation and Measurement, vol. 74, pp. 1-15, May 2025, [link].

Conferences

1. F. Fabra, A. Giménez, J. A. Lopez-Salcedo, G. Seco-Granados, E. Dominguez-Tijero, F. A. Pinto-Benel, F. Grec, R. de Gaudenzi, "Exploring the Potential Capabilities of NB-IoT for Future LEO-PNT Missions", Proc. ION GNSS+, Sep. 2026.
2. E. Dominguez-Tijero, J. Fidalgo, M. Meneses, F. A. Pinto, D. García, F. J. Mata, D. Giustiniano, G. Santaromita, T. Otim, F. Pigato, A. Reus, M. Fernández-Temprado, Q. Liu, F. Fabra, G. Seco-Granados, J. A. Lopez-Salcedo, "A Unified Hybrid Terminal Integrating GNSS and LEO-PNT with 5G and LEO Signals of Opportunity: Consolidated System Design and Measured", Proc. ION GNSS+, Sep. 2026.
3. R. Terris-Gallego, F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, "Enhancing Student Engagement Through Interactive Multiple-Choice Tests with Moodle and Wooclap Using a Shared LaTeX Question Bank", Proc. Annual Conference of the European Association for Education in Electrical and Information Engineering (EAEEIE), June 2026.
4. M. Meneses, E. Domínguez, F. J. Mata, F. A. Pinto, D. García, J. Fidalgo, D. Giustiniano, G. Sanromita, T. Otim, F. Pigato, A. Reus-Bergas, M. Fernández-Temprado, Q. Liu, F. Fabra, G. Seco-Granados, J. A. Lopez-Salcedo, "Novel hybrid positioning terminal combining GNSS, LEO-PNT, 5G and LEO-SOP signals", Proc. European Navigation Conference (ENC), Apr. 2026.
5. E. Dominguez, F. J. Mata, F. A. Pinto, M. Meneses, D. Garcia, J. Fidalgo, D. Giustiniano, G. Sanromita, T. Otim, F. Pigato, J. A. Lopez-Salcedo, G. Seco-Granados, F. Fabra, T. Reus, M. Fernández-Temprado, "Unified Navigation and Communication Hybrid Terminal", Proc. ION GNSS+ [Best Presentation Award], Sep. 2025, [link].
6. T. Spanos, F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, N. Kanistras, I. Lapin, V. Paliouras, "Theoretical and Experimental Evaluation of AoA Estimation in Single-Anchor 5G Uplink Positioning", Proc. IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC), Sep. 2025, [link].
7. R. Terris-Gallego, F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, "Designing Parametric Multiple-Choice Tests with Moodle and LaTeX for Engineering Education", Annual Conference of the European Association for Education in Electrical and Information Engineering (EAEEIE) - [Best paper award], June 2025, [link].
8. F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, "Adaptation of a GNSS open-source receiver for analysis of LEO-PNT scenarios", Proc. ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Dec. 2024, [link].
9. T. Spanos, F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, N. Kanistras, I. Lapin, V. Paliouras, "USRP-Based Single Anchor Positioning: AoA with 5G Uplink Signals, and UWB Ranging", Proc. ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Dec. 2024, [link].
10. F. Fabra, D. Egea-Roca, J. A. Lopez-Salcedo, G. Seco-Granados, "Analysis on signals for LEO-PNT beyond GNSS", Proc. European Signal Processing Conference (EUSIPCO), Aug. 2024, [link].
11. T. Spanos, F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, N. Kanistras, I. Lapin, V. Paliouras, "Angle of Arrival Estimation Using SRS in 5G NR Uplink Scenarios", International Conference on Localization and GNSS (ICL-GNSS), June 2024, [link].
12. A. Xhafa, F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, I. Lapin, "Pathway to Coherent Phase Acquisition in Multi-channel USRP SDRs for Direction of Arrival Estimation", Proc. International Conference on Software Defined Systems (SDS), Oct. 2023, [link].
13. A. Xhafa, F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, "Preliminary Results of 5G Direction of Arrival Estimation using In-Situ Calibration with USRP", Proc. ICL-GNSS, June 2023, [link].
14. F. Fabra, J. A. Lopez-Salcedo, G. Seco-Granados, "Analysis of baseband algorithms for LEO PNT", Proc. European Navigation Conference (ENC), June 2023, [link].
15. E. Obiols, L. Tortajada-Ropero, A. Creus, A. Gonzalez-Novell, F. Fabra, G. Seco-Granados, "GNSS Interference Monitoring and Detection (GIMAD) System", Proc. European Navigation Conference (ENC), May 2023, [link].
16. F. Fabra, G. Seco-Granados, J. A. Lopez-Salcedo, E. Obiols, A. Creus, A. Gonzalez-Novell, "Detection, Characterization, and Localization of Interference Signals in Wideband GNSS Environments: the GIMAD System", ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Apr. 2022, [link].
17. R. Crapart, R. A. Ahmad, S. Lannelongue, A. Rouanet-Labe, Y. Blaudin-De-The, G. Seco-Granados, F. Fabra, "PNT User-Segment Optimization Integrating LEO Components", ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Apr. 2022, [link].