Creating and sharing knowledge for telecommunications

IT Member Profile

... Fernando Duarte Nunes

Senior Researcher

Fernando Nunes

Academic position: Assistant Professor
Joining date: 01-01-1999
Roles in IT: Senior Researcher
Thematic Line: Wireless Technologies
Group: Radio Systems – Lx

Email: Send Email
Address: IT – Lisboa
Instituto Superior Técnico - Torre Norte - Piso 10
Av. Rovisco Pais, 1
1049 - 001 Lisboa
Tel: +351 21 841 84 54
Fax: +351 21 841 84 72

ORCID iD
https://www.orcid.org/0000-0001-7864-3178

SCOPUS

Scientific Achievements

  • PhD, Instituto Superior Técnico, 19-12-1994
1Supervision of PhD theses
As Supervisor
12Supervision of MSc theses
As Supervisor
24Papers in Journals
  • F. Nunes, F. Sousa, Efficient Signal Quality Monitoring of GNSS Signals Disturbed by Evil Waveforms, NAVIGATION: Journal of the Institute of Navigation, Vol. 71, No. 4, pp. navi.668 - navi.668, October, 2024,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, Deep Learning Soft-Decision GNSS Multipath Detection and Mitigation, Sensors, Vol. 24, No. 14, pp. 4663 - 4663, July, 2024,
    | Abstract     | Full text (PDF 557 KBs) | BibTex
  • F. Nunes, F. Sousa, J. M. Marçal, Multi-Frequency Simulation of Ionospheric Scintillation Using a Phase-Screen Model, NAVIGATION: Journal of the Institute of Navigation, Vol. 69, No. 4, pp. 1 - 22, December, 2022,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Characterization and performance analysis of generalized BOC modulations for GNSS, NAVIGATION: Journal of the Institute of Navigation, Vol. 66, No. 1, pp. 1 - 13, April, 2019,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, Generalized Gamma Fading Simulation of Scintillation Disturbed GNSS Signals, IEEE Transactions on Aerospace and Electronic Systems, Vol. 54, No. 4, pp. 2025 - 2034, August, 2018,
    | Abstract     | BibTex
  • N. Delgado, F. Nunes, G. Seco, On the relation between GDOP and the volume described by the user-to-satellite unit vectors for GNSS positioning, GPS Solutions, Vol. 21, No. 1, pp. 1139 - 1147, January, 2017,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • F. Nunes, F. Sousa, GNSS Blind Interference Detection Based on Fourth-Order Autocumulants, IEEE Transactions on Aerospace and Electronic Systems, Vol. 52, No. 5, pp. 2576 - 2588, October, 2016,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, A. J. Rodrigues, Joint frequency domain equalisation and phase noise estimation for single-carrier modulations in doubly-selective channels, IET Communications, Vol. 9, No. 8, pp. 1138 - 1146, May, 2015 | BibTex
  • F. Sousa, F. Nunes, New Expressions for the Autocorrelation Function of BOC GNSS Signals, NAVIGATION: Journal of the Institute of Navigation, Vol. -60, No. -1, pp. -1 - -9, March, 2013,
    | Abstract     | BibTex
  • N. Delgado, F. Nunes, Multipath Estimation in Multicorrelator GNSS Receivers using the Maximum Likelihood Principle, IEEE Transactions on Aerospace and Electronic Systems, Vol. 48, No. 4, pp. 3222 - 3233, October, 2012,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, GNSS Near-Far Mitigation through Subspace Projection without Phase Information, IEEE Transactions on Aerospace and Electronic Systems, Vol. 48, No. 3, pp. 2746 - 2755, July, 2012,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, J. Bioucas-Dias, Phase Drift Estimation and Symbol Detection in Digital Communications: A Stochastic Recursive Filtering Approach, IEEE Communications Letters, Vol. 16, No. 6, pp. 854 - 857, June, 2012 | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, Analytical performance evaluation of a class of receivers with joint equalisation and residual carrier frequency offset estimation, Transactions on Emerging Telecommunications Technologies, Vol. -, No. -, pp. - - -, May, 2012,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, Iterative Frequency Domain Equalization and Carrier Synchronization for Multi-Resolution Constellations, IEEE Transactions on Broadcasting, Vol. 56, No. 4, pp. 551 - 557, December, 2010,
    | Abstract     | BibTex
  • N. Delgado, F. Nunes, Satellite Selection Method for Multi-Constellation GNSS Using Convex Geometry, IEEE Transactions on Vehicular Technology, Vol. 59, No. 9, pp. 4289 - 4297, November, 2010,
    | Abstract     | Full text (PDF 1 MB) | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, State-Space estimation for OFDM and SC-FDE Schemes with Strongly Varying Carrier Frequency Offset, ECTI Trans. on Computer and Information Technology, Vol. 4, No. 1, pp. 21 - 29, May, 2010,
    | Abstract     | BibTex
  • R. Dinis, T. Araújo, P. Pedrosa, F. Nunes, Joint turbo equalisation and carrier synchronisation for SC-FDE schemes, European Trans. on Telecommunications, Vol. 21, No. 2, pp. 131 - 141, February, 2010,
    | Abstract     | BibTex
  • F. Nunes, J. Leitão, F. Sousa, Nonlinear Filtering in GNSS Pseudorange Dynamics Estimation Combining Code Delay and Carrier Phase, IEEE Journal on Selected Topics in Signal Processing, Vol. 3, No. 4, pp. 639 - 650, August, 2009,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Gating Functions for Multipath Mitigation in GNSS BOC Signals, IEEE Transactions on Aerospace and Electronic Systems, Vol. 43, No. 3, pp. 951 - 964, July, 2007,
    | Abstract     | BibTex
  • F. Nunes, J. Leitão, Signal Processing Aspects of Fusion Plasma Broadband Reflectometry, IEEE Transactions on Signal Processing, Vol. 47, No. 2, pp. 378 - 388, February, 1999 | BibTex
  • F. Nunes, J. Santos, M. Manso, Recursive algorithm for fast evaluation of the Abel inversion integral in broadband reflectometry, Review of Scientific Instruments, Vol. 70, No. 1, pp. 1047 - 1050, January, 1999 | BibTex
  • F. Nunes, M. Manso, I. Nunes, J. Santos, A. Silva, P. Varela, On the application of the Wigner-Ville distribution to broadband reflectometry, Fusion Engineering and Design, Vol. 43, No. 1, pp. 441 - 449, January, 1999 | BibTex
  • F. Nunes, J. Leitão, A Nonlinear Filtering Approach to Estimation and Detection in Mobile Communications, IEEE Journal on Selected Areas in Communications, Vol. 16, No. 9, pp. 1649 - 1659, December, 1998 | BibTex
  • F. Nunes, P. Varela, A. Silva, M. Manso, J. Santos, I. Nunes, F. Serra, A two-dimensional regularization algorithm for density profile evaluation from broadband reflectometry, Review of Scientific Instruments, Vol. 68, No. 1, pp. 906 - 909, January, 1997 | BibTex
91Papers in Conferences
  • A. Negrinho, P. Boto, P. Fernandes, V. Mendonça, F. Nunes, F. Sousa, Signal Quality Monitoring Aspects in GNSS Signals Affected by Evil Waveforms, Institute of Navigation GPS/GNSS Conf., Denver, CO, United States, Vol., pp. 3947 - 3958, September, 2022,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, Performance of GNSS Evil Waveform Detectors in the Presence of Multipath, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Conference online, April, 2022,
    | Abstract     | Full text (PDF 506 KBs) | BibTex
  • F. Sousa, F. Nunes, A. Negrinho, P. Fernandes, P. Boto, Signal Quality Monitoring Aspects in GNSS Signals Affected by Evil Waveforms, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Conference online, April, 2022,
    | Abstract     | BibTex
  • A. Negrinho, P. Fernandes, P. Boto, F. Nunes, F. Sousa, Evil Waveforms Detection Solutions for Autonomous Navigation Integrity, Institute of Navigation Institute of Navigation GPS/GNSS Conf. ION GNSS, St. Louis, United States, Vol. 1, pp. 4097 - 4115, September, 2021,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, State-space Estimation of Ionospheric Scintillation Processes with a Static GNSS Receiver, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, December, 2018,
    | Abstract     | Full text (PDF 526 KBs) | BibTex
  • F. Nunes, F. Sousa, J. M. Marçal, Statistical Characterization of Ionospheric Scintillation using a Phase-screen Model, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, December, 2018,
    | Abstract     | Full text (PDF 417 KBs) | BibTex
  • J. M. Marçal, F. Nunes, F. Sousa, Performance of an adaptive partitioned vector tracking algorithm with real scintillation data, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, December, 2018,
    | Abstract     | Full text (PDF 696 KBs) | BibTex
  • F. Nunes, F. Sousa, J. M. Marçal, Analytic Phase-screen Model for Fast Simulation of Ionospheric Scintillation in GNSS Signals, International Conference on Localization and GNSS ICL-GNSS, Guimarães, Portugal, Vol., pp. 1 - 6, June, 2018,
    | Abstract     | BibTex
  • J. M. Marçal, F. Nunes, F. Sousa, Comparison of low complexity C/No estimators for GNSS signals affected by ionospheric scintillation, International Technical Symposioum on Navigation and Timing ITSNT, Toulouse, France, November, 2017 | Full text (PDF 348 KBs) | BibTex
  • J. M. Marçal, F. Nunes, F. Sousa, Robust vector tracking for carrier phase signals with separated estimation of common and individual errors, Institute of Navigation International Technical Meeting ITM, Monterey, CA, United States, Vol. -, pp. - - -, January, 2017,
    | Abstract     | Full text (PDF 559 KBs) | BibTex
  • J. M. Marçal, F. Nunes, F. Sousa, Performance of a scintillation robust vector tracking for GNSS carrier phase signals, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), -, Netherlands, Vol. -, pp. - - -, December, 2016,
    | Abstract     | BibTex
  • F. Nunes, J. Leitão, F. Sousa, Performance Analysis of an Absolute Phase Modulation Scheme for GNSS Signals, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. ., pp. . - ., December, 2016,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, Performance of a VDFLL GNSS Receiver Architecture in Presence of Interference, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2016,
    | Abstract     | BibTex
  • J. M. Marçal, F. Nunes, Robust Vector Tracking for GNSS carrier phase signals, International Conference on Localization and GNSS ICL-GNSS, Barcelona, Spain, June, 2016 | Full text (PDF 393 KBs) | BibTex
  • F. Nunes, F. Sousa, Performance Evaluation in AltBOC Receivers Affected by Interference, International Conference on Localization and GNSS ICL-GNSS, Barcelona, Spain, Vol. 1, pp. 1 - 6, June, 2016,
    | Abstract     | Full text (PDF 294 KBs) | BibTex
  • F. Sousa, F. Nunes, Sensitivity of GNSS Blind Interference Detection Algorithm Based on Fourth-order Autocumulants, International Conference on Localization and GNSS ICL-GNSS, Barcelona, Spain, Vol. 1, pp. 1 - 6, June, 2016,
    | Abstract     | Full text (PDF 218 KBs) | BibTex
  • F. Nunes, J. M. Marçal, Birds Flight Analysis using GNSS Signals, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 1 - 4, September, 2015,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, A. J. Rodrigues, Joint Turbo Frequency Domain Equalization and Stochastic Recursive Filtering Carrier Synchronization, Vehicular Technology Conference: VTC-Spring, Glasgow, United Kingdom, Vol. -, pp. - - -, May, 2015 | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, Joint Equalization and Phase Drift Estimation for Underwater Acoustic Communications, IEEE Global Communications Conference - GLOBECOM, Austin, TX, United States, Vol. -, pp. - - -, December, 2014 | BibTex
  • F. Sousa, F. Nunes, Performance Comparison of a VDFLL versus VDLL and Scalar GNSS Receiver Architectures in Harsh Scenarios, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2014,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, Generation of Nakagami Correlated Fading in GNSS Signals Affected by Ionospheric Scintillation, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2014 | BibTex
  • F. Nunes, F. Sousa, Interference Detection in GNSS Signals Using the Gaussianity Criterion, European Signal Processing Conference EUSIPCO, Lisbon, Portugal, Vol. I, pp. 1 - 5, September, 2014,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, Joint Equalization and Phase Drift Compensation for the Underwater Acoustic Channel, IEEE Vehicular Technology Conf. - VTC-Fall, Vancouver, Canada, Vol. -, pp. - - -, September, 2014 | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, A. J. Rodrigues, Joint Equalization and Gaussian Sums Particle Filtering Phase Noise Estimation, IEEE International Conference on Communications - ICC, Sidney, Australia, Vol. -, pp. - - -, June, 2014 | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, A. J. Rodrigues, Phase Noise Estimation for M-QAM Constellations using Gaussian Sum Particle Filtering, Vehicular Technology Conference: VTC-Spring, Seoul, Korea, South, Vol. -, pp. - - -, May, 2014 | BibTex
  • F. Nunes, F. Sousa, Practical Simulation of GNSS Signals in the Presence of Ionospheric Scintillation, IEEE Position, Location and Navigation Symp. - PLANS, Monterey-San Francisco, United States, Vol. I, pp. 50 - 58, May, 2014,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, Performance Analysis of a VDFLL GNSS Receiver Architecture under Ionospheric Scintillation and Multipath Conditions, IEEE Position, Location and Navigation Symp. - PLANS, Monterey-San Francisco, United States, Vol. I, pp. 602 - 611, May, 2014,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, A. J. Rodrigues, Decision-directed Estimation of Phase Noise in Iterative Frequency-domain Equalization Schemes, International Conf. on Signal Processing and Communication Systems - ICSPCS, Gold Coast, Australia, Vol. -, pp. - - -, December, 2013 | BibTex
  • F. Nunes, J. Leitão, F. Sousa, Absolute Modulation Scheme for Enhanced GNSS Receiver Performance, European Workshop on GNSS Signals and Signal Processing - EWGSSP, Munich, Germany, Vol. I, pp. 1 - 7, December, 2013,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, Interference Detection in GNSS Signals through the Sample Covariance Matrix, European Workshop on GNSS Signals and Signal Processing - EWGSSP, Munich, Germany, Vol. I, pp. 1 - 8, December, 2013,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, Jamming Detection in GNSS Signals Using the Sample Covariance Matrix, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2012,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, Characterization and Performance Analysis of a VDFLL GNSS Receiver Architecture, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2012,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, Joint Equalization and Phase Noise Tracking for Doubly Selective Channels, IEEE International Conf. on Computer Communication and Networks - ICCCN, Munique, Germany, Vol. -, pp. 1 - 7, July, 2012,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, New Expressions for the Autocorrelation Function of Galileo Signals, European Navigation Conf. - ENC-GNSS, London, United Kingdom, Vol. I, pp. 1 - 15, November, 2011,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Performance Analysis of Low-Complexity VDLL Architectures for GNSS Signals, European Navigation Conf. - ENC-GNSS, London, United Kingdom, Vol. 1, pp. 1 - 13, November, 2011,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, Joint Detection and CFO Estimation for QAM Constellations, Vehicular Technology Conference: VTC-Spring, Budapest, Hungary, Vol. -, pp. - - -, May, 2011,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, J. M. Marçal, Low-Complexity VDLL Receiver for Multi-GNSS Constellations, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2010,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, Near-Far effect mitigation for GNSS software receivers using subspace projection, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 6, December, 2010,
    | Abstract     | BibTex
  • N. Delgado, F. Nunes, Satellite Selection based on WDOP Concept and Convex Geometry, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2010,
    | Abstract     | BibTex
  • J. Lorga, P. F. Silva, J. Silva, T. Silva, M. Nunes, F. Nunes, F. Sousa, GNSS Hybridization for Indoor Positioning, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 13, December, 2010,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, An Analytical Approach for Performance Evaluation oa a Class of Receivers with Joint Equalization and Carrier Frequency Synchronization, IEEE Signal Processing Workshop on Signal Processing Advances in Wireless Comm., Marrakech, Morocco, Vol. -, pp. - - -, June, 2010,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, Analytical Performance Evaluation of a Class of Receivers with Joint Equalization and Carrier Frequency Synchronization, IEEE Sarnoff Symp., Princeton, United States, Vol. -, pp. - - -, April, 2010,
    | Abstract     | BibTex
  • P. Pedrosa, R. Dinis, F. Nunes, A Model of an Iterative Estimator of the Carrier Frequency Offset, IASTED International Conf. on Signal Processing, Pattern Recognition and Applications - SPPRA, Innsbruck, Austria, Vol. -, pp. - - -, February, 2010,
    | Abstract     | Full text (PDF 188 KBs) | BibTex
  • N. Delgado, F. Nunes, A Convex Geometry Approach to Dynamic GNSS Satellite Selection for a Multi-Constellation System, Institute of Navigation GPS/GNSS Conf., Savannah, United States, Vol. -, pp. - - -, September, 2009 | BibTex
  • F. Nunes, F. Sousa, N. Delgado, A VDLL Approach to GNSS Cell Positioning for Indoor Scenarios, Institute of Navigation GPS/GNSS Conf., Savannah, United States, Vol. 1, pp. 1690 - 1699, September, 2009,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, J. Leitão, Correlation Losses and Interference Rejection due to Quantization in CBOC Receivers, Institute of Navigation GPS/GNSS Conf., Savannah, United States, Vol. 1, pp. 3234 - 3241, September, 2009,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Performance Analysis of Altimeter-Aided GNSS Receiver for Indoor Scenarios, Conf. on Telecommunications - ConfTele, Santa maria da Feira, Portugal, Vol. 1, pp. 1 - 4, May, 2009,
    | Abstract     | Full text (PDF 259 KBs) | BibTex
  • N. Delgado, F. Nunes, Theoretical Performance of the MEDLL Algorithm for the New Navigation Signals, Conf. on Telecommunications - ConfTele, Aveiro, Portugal, Vol. 1, pp. 1 - 4, May, 2009 | BibTex
  • N. Delgado, F. Nunes, Maximum Likelihood Estimation of Multipath and Theoretical Accuracy Limits for the New Navigation Signals, European Navigation Conf. - ENC-GNSS, Naples, Italy, Vol. 1, pp. 1 - 12, May, 2009 | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Code Tracking Algorithm for GNSS Open-Loop Receivers Using Autocorrelation Interpolation, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2008,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, J. Leitão, Multipath Mitigation Techniques in MBOC GPS/Galileo Signals Using the CCRW Concept, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2008,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, J. Leitão, BOC/MBOC Multicorrelator Receiver with Least-Squares Multipath Mitigation Technique, Institute of Navigation GPS/GNSS Conf., Savannah, United States, Vol. 1, pp. 1 - 11, September, 2008,
    | Abstract     | BibTex
  • N. Delgado, F. Nunes, J. Xavier, A Geometrical Approach for Maximum Likelihood Estimation of Multipath, Institute of Navigation GPS/GNSS Conf., Savannah, GA, United States, Vol. 1, pp. 1 - 10, September, 2008 | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Least-Squares Minimization Technique for Multipath Mitigation in GNSS Receivers, European Navigation Conf. - ENC-GNSS, Toulouse, France, Vol. 1, pp. 1 - 11, April, 2008,
    | Abstract     | BibTex
  • F. Sousa, F. Nunes, J. Leitão, Code Correlation Reference Waveforms for Multipath Mitigation in MBOC GNSS Receivers, European Navigation Conf. - ENC-GNSS, Toulouse, France, Vol. 1, pp. 1 - 10, April, 2008,
    | Abstract     | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Nonlinear Least-Squares Algorithm for Close-in Multipath Mitigation in GNSS Receivers, Institute of Navigation GPS/GNSS Conf., Fort Worth, United States, Vol. I, pp. 1 - 9, September, 2007 | BibTex
  • F. Nunes, J. Leitão, F. Sousa, Improving Pseudorange Estimation in GNSS Receivers with a Recursive Bayesian Approach, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 1 - 4, May, 2007 | BibTex
  • F. Sousa, F. Nunes, J. Leitão, Asymmetrical Strobe Pulses for Multipath Mitigation in BOC GNSS Receivers, Conf. on Telecommunications - ConfTele, Peniche, Portugal, Vol. 1, pp. 1 - 4, May, 2007 | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Parallel Bayesian Code Delay and Doppler frequency Estimation in GNSS Receivers, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2006 | BibTex
  • F. Sousa, F. Nunes, J. Leitão, Strobe Correlator Design for Multipath Mitigation in BOC GNSS Receivers, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2006 | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Kalman Filtering for Acquisition of GNSS Signals in Highly-Manoeuvrable Receivers, IEEE Position, Location and Navigation Symp. - PLANS, San Diego, United States, Vol. 1, pp. 1 - 9, April, 2006 | BibTex
  • F. Sousa, F. Nunes, J. Leitão, Strobe Pulse Design for Multipath Mitigation in BOC GNSS Receivers, IEEE Position, Location and Navigation Symp. - PLANS, San Diego, United States, Vol. 1, pp. 1 - 8, April, 2006 | BibTex
  • F. Sousa, F. Nunes, J. Leitão, Partial Correlation Technique for the Acquisition of Weak GPS/Galileo Signals, Institute of Navigation Annual Meeting, Cambridge-Boston, United States, Vol. 1, pp. 543 - 552, June, 2005 | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Improving Multipath Mitigation in GPS/Galileo BOC Signals with Gating Functions, Institute of Navigation Annual Meeting, Cambridge-Boston, United States, Vol. 1, pp. 498 - 507, June, 2005 | BibTex
  • F. Nunes, F. Sousa, J. Silva, J. Leitão, Hybrid Code Delay Estimator for GPS/Galileo BOC Signals Using the Innovations Approach, Conf. on Telecommunications - ConfTele, Tomar, Portugal, Vol. 1, pp. 1 - 4, April, 2005 | BibTex
  • A. Nunes, T. Ferreira, J. Borràs, F. Nunes, F. Sousa, G. Seco, Signal Generator and Receiver Toolbox for Galileo/GPS Signals, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2004 | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Multipath Mitigation Technique for BOC Signals Using Gating Functions, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 1 - 8, December, 2004 | BibTex
  • F. Sousa, F. Nunes, J. Leitão, An Acquisition Algorithm for Weak Signals in Galileo and Modernized GPS Systems, ESA Workshop on Satellite Navigation User Equipment Technologies (NAVITEC), Noordwijk, Netherlands, Vol. 1, pp. 480 - 487, December, 2004 | BibTex
  • F. Nunes, F. Sousa, J. Leitão, Innovations-based Code Discriminator for GPS/Galileo BOC Signals, IEEE Vehicular Networking Conf. (VNC), Los Angeles, United States, Vol. 1, pp. 1 - 5, September, 2004 | BibTex
  • F. Nunes, F. Sousa, J. Leitão, An Innovations Approach to False-lock Mitigation for GPS/Galileo BOC Signals, Institute of Navigation GPS/GNSS Conf., Long Beach, CA, United States, Vol. 1, pp. 1 - 8, September, 2004 | BibTex
  • F. Nunes, J. Leitão, Innovations-based Channel Estimation and symbol Detection of Multi-level OFDM Signals, IEEE Signal Processing Workshop on Signal Processing Advances in Wireless Comm., Lisboa, Portugal, Vol. 1, pp. 1 - 4, July, 2004 | BibTex
  • F. Nunes, J. Leitão, A New Fast Code/Frequency Acquisition Algorithm for GPS C/A Signals, IEEE Vehicular Networking Conf. (VNC), Orlando, United States, Vol. 1, pp. 1 - 5, October, 2003 | BibTex
  • F. Nunes, J. Leitão, State-space Estimation of Rapidly-varying Carrier Frequency Offsets in OFDM Systems, IEEE Signal Processing Workshop on Signal Processing Advances in Wireless Comm., Roma, Italy, Vol. 1, pp. 370 - 374, June, 2003 | BibTex
  • F. Nunes, J. Leitão, Joint Doppler Frequency and Frequency-Rate Estimation in LEO Satellite Communications, IEEE Global Communications Conference - GLOBECOM, Taipei, Taiwan, Vol. 1, pp. 1 - 5, November, 2002 | BibTex
  • F. Nunes, J. Leitão, 16-DAPSK Sequence Detection in Fading Channels with Carrier Frequency Offset Estimation, IEEE International Symp. on Personal, Indoor and Mobile Radio Commun - PIMRC, Lisbon, Portugal, Vol. 5, pp. 2072 - 2076, September, 2002 | BibTex
  • F. Nunes, J. Leitão, 16-DAPSK Innovations-based Sequence Detection for Satellite Communications with Imperfect Carrier Synchronization, IEEE Vehicular Networking Conf. (VNC), Vancouver, Canada, Vol. 1, pp. 1 - 5, September, 2002 | BibTex
  • F. Nunes, J. Leitão, Doppler Frequency and Frequency-Rate Estimation in Fading Channels. Application to LEO Satellite Communications, ESA DSP, Sesimbra, Portugal, Vol. 1, pp. 8.4(1) - 8.4(8), October, 2001 | BibTex
  • F. Nunes, J. Leitão, M-DPSK Detection, Channel Estimation and Power Control in LEO Satellite Communications, IEEE International Conference on Communications - ICC, Helsinki, Finland, Vol. 4, pp. 2655 - 2659, June, 2001 | BibTex
  • F. Nunes, J. Leitão, Adaptive Scheme for M-DPSK Signals in LEO Satellite Communications, IEEE Vehicular Networking Conf. (VNC), Rhodes, Greece, Vol. 4, pp. 2993 - 2997, May, 2001 | BibTex
  • F. Nunes, J. Leitão, Adaptive M-DPSK Scheme for Fading Channels, Conf. on Telecommunications - ConfTele, Figueira da Foz, Portugal, Vol. 1, pp. 341 - 345, April, 2001 | BibTex
  • F. Nunes, J. Leitão, M-DPSK Receiver for Doppler-Shift Mobile Communications, IEEE Signal Processing Workshop on Signal Processing Advances in Wireless Comm., Taoyuan, Taiwan, Vol. 1, pp. 22 - 25, March, 2001 | BibTex
  • F. Nunes, J. Leitão, Improving UAV-Ground Digital Links with GPS Data, UAV's International Conf., Bristol, United Kingdom, Vol. 1, pp. 15.1 - 15.7, April, 2000 | BibTex
  • F. Nunes, J. Leitão, Nonlinear Channel Estimation in Fading OFDM Systems, IEEE Global Communications Conference - GLOBECOM, Rio de Janeiro, Brazil, Vol. 4, pp. 2157 - 2161, December, 1999 | BibTex
  • F. Nunes, J. Leitão, Fast Phase Acquisition Receiver for LEO Communications in Rician Channels, IEEE International Conference on Communications - ICC, Vancouver, Canada, Vol. 2, pp. 1058 - 1062, June, 1999 | BibTex
  • F. Nunes, J. Leitão, A Fast Phase Acquisition Receiver for Nongeostationary Orbit Satellites, Conf. on Telecommunications - ConfTele, Sesimbra, Portugal, Vol. 1, pp. 50 - 54, April, 1999 | BibTex
  • F. Nunes, J. Leitão, Open-loop Receiver for MSK with Doppler Frequency Shift, IEEE Global Communications Conference - GLOBECOM, Sydney, Australia, Vol. 6, pp. 3626 - 3631, December, 1998 | BibTex
  • F. Nunes, J. Santos, M. Manso, Two-layer perceptron for fast plasma density evaluation in broadband reflectometry, IEEE International Conf. on Electronics, Circuits and Systems, Lisbon, Portugal, Vol. 2, pp. 253 - 256, September, 1998 | BibTex
  • F. Nunes, J. Leitão, Doppler Shift Robust Receiver for Digital Parallel Signalling in Fading Channels, IEEE Global Communications Conference - GLOBECOM, Phoenix, United States, Vol. 3, pp. 1225 - 1229, November, 1997 | BibTex
  • F. Nunes, J. Leitão, Doppler Shift Robust Receiver for Mobile Satellite Communications, IEEE Global Communications Conference - GLOBECOM, London, United Kingdom, Vol. 1, pp. 405 - 409, November, 1996 | BibTex
  • F. Nunes, J. Leitão, A Nonlinear Filtering Approach to Symbol Detection and State Estimation in Rice/Rayleigh Channels, IEEE International Conference on Communications - ICC, Seattle, United States, Vol. 3, pp. 1795 - 1799, June, 1995 | BibTex
  • F. Nunes, J. Leitão, State Estimation in Rice/Rayleigh Channels Using a Nonlinear Filtering Technique, IEEE International Conference on Communications - ICC, New Orleans, United States, Vol. 2, pp. 903 - 907, May, 1994 | BibTex
1Patents
  • P. Pedrosa, R. Dinis, F. Nunes, A. J. Rodrigues, Recetor com igualização e estimação do ruído de fase conjuntas e respetivo método, PT107671, National, Granted, 30-05-2014, Portugal,
    | Abstract

Closed Projects8

Acronym Name Funding Agency Start date Ending date
ADCOD Advanced Code and Receiver Designs for Transmission over Selective Radio Channels FCT/PTDC 01-03-2010 01-02-2013
ARNAGGS Advanced Receivers and Navigation Algorithms for GPS/Galileo Signals FCT/PTDC 01-09-2007 01-03-2011
CETMC Channel Estimation Techniques in Mobile Communications FCT/POSI 01-01-2001 31-12-2004
DNURS Development of a Navigation User Receiver Simulator ESA-ESTEC 03-01-2003 31-12-2003
ICNS Integrated Communication and Navigation Systems FCT/POSI 01-01-2001 01-01-2003
INPOS Indoors Positioning Using GNSS Aided Techniques QREN 01-06-2008 01-06-2010
QuNet QuNet - Quantum Telecommunication Networks IT 01-11-2016 01-10-2018
ROCAT Techniques for Robust Carrier Phase Tracking (under High Dynamics/Strong Fading/Scintillation Conditions) ESA-ESTEC 01-07-2012 01-06-2013
1Awards
  • F. Nunes, Best paper award, The paper "Practical Simulation of GNSS Signals in the Presence of Ionospheric Scintillation" - F. Nunes, F. Sousa, received the best paper award (track B) in the conference IEEE/ION PLANS 2014, Monterey, CA, May 2014., 01-09-2015
8Conference Committees
  • International Conf. on Localization and GNSS - ICL, Technical Programme Committee, 2018
  • International Conf. on Localization and GNSS - ICL, Technical Programme Committee, 2017
  • International Conf. on Localization and GNSS - ICL, Technical Programme Committee, 2016
  • International Conf. on Localization and GNSS - ICL, Technical Programme Committee, 2015
  • International Conf. on Localization and GNSS - ICL, Technical Programme Committee, 2014
  • International Conf. on Localization and GNSS - ICL, Technical Programme Committee, 2013
  • International Conf. on Localization and GNSS - ICL, Technical Programme Committee, 2012
  • International Conf. on Localization and GNSS - ICL, Technical Programme Committee, 2011
1Refereeing Journals
  • IEEE Communications Letters
    2012, 1 review(s);
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