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Identification

Personal identification

Full name
Paulo Alexandre Crisóstomo Lopes

Citation names

  • Lopes, Paulo
  • P. A. C. Lopes

Author identifiers

Ciência ID
A51B-52BA-702A
ORCID iD
0000-0002-9045-0413

Languages

Language Speaking Reading Writing Listening Peer-review
English Advanced (C1) Advanced (C1) Advanced (C1) Advanced (C1)
French Beginner (A1) Intermediate (B1) Beginner (A1) Beginner (A1)
Education
Degree Classification
2003
Concluded
 Engenharia Electrotécnica e de Computadores (Doutoramento)
Major in Sem especialidade
Universidade de Lisboa Instituto Superior Técnico, Portugal
"Sistemas Adaptivos de Cancelamento Activo de Ruído - Capacidade de Seguimento e Problemas de Causalidade" (THESIS/DISSERTATION)
1997
Concluded
 Eng. Electrotécnica e de Computadores (Licenciatura)
Universidade de Lisboa Instituto Superior Técnico, Portugal
"Cancelador de Ruído Acústico" (THESIS/DISSERTATION)
 17 valores - Bom com Destinção
Affiliation

Science

Category
Host institution 		Employer
1997 - Current Researcher (Research) Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa, Portugal

Teaching in Higher Education

Category
Host institution 		Employer
2005 - Current Assistant Professor (University Teacher) Universidade de Lisboa Instituto Superior Técnico, Portugal
2016 - 2018 Assistant Professor (University Teacher) Universidade de Lisboa, Portugal
2013 - 2016 Assistant Professor (University Teacher) Universidade de Lisboa Instituto Superior Técnico, Portugal
2003 - 2005 Assistant Professor (University Teacher) ISCTE-Instituto Universitário de Lisboa, Portugal
2001 - 2003 Trainee Assistant (University Teacher) ISCTE-Instituto Universitário de Lisboa, Portugal

Others

Category
Host institution 		Employer
1997 - 2002 Bolseiro de Doutoramento Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa, Portugal
1996 - 1997 Estagiário Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa, Portugal
1995 - 1996 Monitor de Analise Matemática III Universidade de Lisboa Instituto Superior Técnico, Portugal
Projects

Contract

Designation Funders
2007/12/01 - 2011/01/31 Redução de Ruido em Sistemas de Comunicação pela Linha de Transmissão de Energia Electrica
PTDC/EEA-TEL/67979/2006
Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa, Portugal
 Fundação para a Ciência e a Tecnologia
Concluded
2005/04/01 - 2007/12/31 Sistema de Comunicação OFDM Adaptativo na Rede de Distribuição de Energia Eléctrica
POSC/EEA-CPS/59401/2004
Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa, Portugal

Instituto Politécnico de Beja, Portugal
Fundação para a Ciência e a Tecnologia
Concluded
2005/01/01 - 2006/12/31 Biochips Magnetoresistivos para reconhecimento biomolecular
POSC/EEA-ESE/58523/2004
INESC Microsistemas e Nanotecnologias, Portugal

Instituto de Engenharia de Sistemas e Computadores Investigação e Desenvolvimento em Lisboa, Portugal
Fundação para a Ciência e a Tecnologia
Concluded
Outputs

Publications

Conference paper
  1. Lopes, P.A.C.; Piedade, M.S.. "A Kalman filter approach to active noise control". 2015.
Journal article
  1. Paulo A.C. Lopes; José A.B. Gerald. "Careful feedback active noise and vibration control algorithm robust to large secondary path changes". European Journal of Control (2024): https://doi.org/10.1016/j.ejcon.2023.100905.
    10.1016/j.ejcon.2023.100905
  2. Paulo A. C. Lopes. "The Predict and Invert Feedback Active Noise and Vibration Control Algorithm". Circuits, Systems, and Signal Processing (2023): https://doi.org/10.1007/s00034-023-02471-7.
    10.1007/s00034-023-02471-7
  3. Paulo Lopes. "Analysis of the LMS and NLMS algorithms using the misalignment norm". Signal, Image and Video Processing 17 7 (2023): 3623-3628. http://dx.doi.org/10.1007/s11760-023-02588-x.
    10.1007/s11760-023-02588-x
  4. Paulo A. C. Lopes; José A. B. Gerald. "Careful least squares active noise control with no prior secondary path model". International Journal of Adaptive Control and Signal Processing (2022): https://doi.org/10.1002/acs.3500.
    10.1002/acs.3500
  5. Paulo A. C. Lopes. "Low-Delay and Low-Cost Sigma-Delta Adaptive Controller for Active Noise Control". Circuits, Systems, and Signal Processing 41 5 (2022): 2988-2999. https://doi.org/10.1007/s00034-021-01913-4.
    10.1007/s00034-021-01913-4
  6. Paulo A. C. Lopes; Jose Antonio Beltran Gerald. "Low Delay Short Word Length Sigma Delta Active Noise Control". IEEE Transactions on Circuits and Systems I: Regular Papers 68 9 (2021): 3746-3757. https://doi.org/10.1109/TCSI.2021.3096180.
    10.1109/TCSI.2021.3096180
  7. Paulo A. C. Lopes; José A. B. Gerald. "Frequency domain analysis of the mirror-modified filtered-x least mean squares algorithm with low ambient noise". International Journal of Adaptive Control and Signal Processing 35 7 (2021): 1370-1387. https://doi.org/10.1002/acs.3246.
    10.1002/acs.3246
  8. Paulo A. C. Lopes; José A. B. Gerald. "An FPGA Implementation of the Log-MAP Algorithm for a Dirty Paper Coding CODEC". Circuits, Systems, and Signal Processing 40 4 (2021): 1905-1925. https://doi.org/10.1007/s00034-020-01567-8.
    10.1007/s00034-020-01567-8
  9. Paulo A.C. Lopes. "Bayesian step least mean squares algorithm for Gaussian signals". IET Signal Processing 14 8 (2020): 506-512. https://doi.org/10.1049/iet-spr.2020.0058.
    10.1049/iet-spr.2020.0058
  10. Paulo A.C. Lopes; Satyendra Singh Yadav; Aleksandar Ilic; Sarat Kumar Patra. "Fast block distributed CUDA implementation of the Hungarian algorithm". Journal of Parallel and Distributed Computing 130 (2019): 50-62. https://doi.org/10.1016/j.jpdc.2019.03.014.
    10.1016/j.jpdc.2019.03.014
  11. Paulo A. C. Lopes; José A. B. Gerald. "A narrowband active noise control system with reference synthesis". International Journal of Adaptive Control and Signal Processing 33 7 (2019): 1118-1133. https://doi.org/10.1002/acs.3011.
    10.1002/acs.3011
  12. Satyendra Singh Yadav; Paulo Alexandre Crisóstomo Lopes; Sarat Kumar Patra. "Parallel Resource Allocation and Subcarrier Assignment for Downlink OFDMA". IETE Technical Review (2019): 1-16. https://doi.org/10.1080/02564602.2018.1498755.
    10.1080/02564602.2018.1498755
  13. Paulo A.C. Lopes; José A.B. Gerald. "Leakage-based precoding algorithms for multiple streams per terminal MU-MIMO systems". Digital Signal Processing 75 (2018): 38-44. https://doi.org/10.1016/j.dsp.2017.12.007.
    10.1016/j.dsp.2017.12.007
  14. Paulo A. C. Lopes; Jose A. B. Gerald. "A Close to Optimal Adaptive Filter for Sudden System Changes". IEEE Signal Processing Letters 24 11 (2017): 1734-1738. https://doi.org/10.1109/LSP.2017.2757147.
    10.1109/LSP.2017.2757147
  15. Paulo A.C. Lopes; José A.B. Gerald. "Iterative MMSE/MAP impulsive noise reduction for OFDM". Digital Signal Processing 69 (2017): 252-258. https://doi.org/10.1016%2Fj.dsp.2017.07.002.
    10.1016/j.dsp.2017.07.002
  16. Paulo A.C. Lopes; José A.B. Gerald; Moisés S. Piedade. "The MMFxLMS algorithm for active noise control with on-line secondary path modelling". Digital Signal Processing 60 (2017): 75-80. https://doi.org/10.1016/j.dsp.2016.08.012.
    10.1016/j.dsp.2016.08.012
  17. Paulo A.C. Lopes; José A.B. Gerald. "Improving bit error rate under burst noise in OFDM power line communications". Digital Signal Processing 51 (2016): 47-53. https://doi.org/10.1016%2Fj.dsp.2015.12.018.
    10.1016/j.dsp.2015.12.018
  18. Lopes, P.A.C.; Gerald, J.A.B.. "Auxiliary Noise Power Scheduling Algorithm for Active Noise Control with Online Secondary Path Modeling and Sudden Changes". IEEE Signal Processing Letters 22 10 (2015): 1590-1594. http://www.scopus.com/inward/record.url?eid=2-s2.0-84926500215&partnerID=MN8TOARS.
    10.1109/LSP.2015.2415875
  19. Lopes, P.A.C.; Gerald, J.A.B.; Piedade, M.S.. "The Random Walk Model Kalman Filter in Multichannel Active Noise Control". IEEE Signal Processing Letters 22 12 (2015): 2244-2248. http://www.scopus.com/inward/record.url?eid=2-s2.0-84941106020&partnerID=MN8TOARS.
    10.1109/LSP.2015.2475357
  20. Lopes, P.A.C.; Pinto, J.M.M.; Gerald, J.B.. "Dealing with unknown impedance and impulsive noise in the power-line communications channel". IEEE Transactions on Power Delivery 28 1 (2013): 58-66. http://www.scopus.com/inward/record.url?eid=2-s2.0-84871770327&partnerID=MN8TOARS.
    10.1109/TPWRD.2012.2214065
  21. Lopes, P.A.C.; Pinto, J.M.M.; Gerald, J.B.. "Modeling and optimization of the access impedance of power line channels". IEEE ISPLC 2010 - International Symposium on Power Line Communications and its Applications (2010): 142-147. http://www.scopus.com/inward/record.url?eid=2-s2.0-77954421847&partnerID=MN8TOARS.
    10.1109/ISPLC.2010.5479930
  22. Lopes, P.A.C.; Germano, J.; De Almeida, T.M.; Sousa, L.A.; Piedade, M.S.; Cardoso, F.A.; Ferreira, H.A.; Freitas, P.P.. "Measuring and extraction of biological information on new handheld biochip-based microsystem". IEEE Transactions on Instrumentation and Measurement 59 1 (2010): 56-62. http://www.scopus.com/inward/record.url?eid=2-s2.0-72349085069&partnerID=MN8TOARS.
    10.1109/TIM.2008.2003321
  23. De Almeida, T.M.; Piedade, M.S.; Sousa, L.A.; Germano, J.; Lopes, P.A.C.; Cardoso, F.A.; Freitas, P.P.. "On the modeling of new tunnel junction magnetoresistive biosensors". IEEE Transactions on Instrumentation and Measurement 59 1 (2010): 92-100. http://www.scopus.com/inward/record.url?eid=2-s2.0-72349090416&partnerID=MN8TOARS.
    10.1109/TIM.2009.2022100
  24. Lopes, P.A.C.. "Active noise control algorithms with reduced channel count and their stability analysis". Signal Processing 88 4 (2008): 811-821. http://www.scopus.com/inward/record.url?eid=2-s2.0-37649017692&partnerID=MN8TOARS.
    10.1016/j.sigpro.2007.09.016
  25. Lopes, P.A.C.; Germano, J.; Almeida, T.M.; Sousa, L.; Piedade, M.S.; Cardoso, F.; Ferreira, H.A.; Freitas, P.P.. "A new handheld biochip-based microsystem". Proceedings - IEEE International Symposium on Circuits and Systems (2007): 2379-2382. http://www.scopus.com/inward/record.url?eid=2-s2.0-34548818525&partnerID=MN8TOARS.
  26. Lopes, P.A.C.; Tavares, G.; Gerald, J.B.. "A new type of normalized LMS algorithm based on the Kalman filter". ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 3 (2007): http://www.scopus.com/inward/record.url?eid=2-s2.0-34547502967&partnerID=MN8TOARS.
    10.1109/ICASSP.2007.367094
  27. Sousa, L.; Piedade, M.; Germano, J.; Almeida, T.; Lopes, P.; Cardoso, F.; Freitas, P.. "Generic architecture designed for biomedical embedded systems". IFIP International Federation for Information Processing 231 (2007): 353-362. http://www.scopus.com/inward/record.url?eid=2-s2.0-34248352245&partnerID=MN8TOARS.
    10.1007/978-0-387-72258-0_30
  28. Lopes, P.A.C.; Gerald, J.B.. "New normalized LMS algorithms based on the Kalman filter". Proceedings - IEEE International Symposium on Circuits and Systems (2007): 117-120. http://www.scopus.com/inward/record.url?eid=2-s2.0-34548828535&partnerID=MN8TOARS.
  29. Almeida, T.M.; Piedade, M.S.; Germano, J.; Lopes, P.C.; Sousa, L.; Cardoso, F.; Ferreira, H.; Freitas, P.. "Measurements and modelling of a magnetoresistive biosensor". IEEE 2006 Biomedical Circuits and Systems Conference Healthcare Technology, BioCAS 2006 (2006): 41-44. http://www.scopus.com/inward/record.url?eid=2-s2.0-52949142237&partnerID=MN8TOARS.
    10.1109/BIOCAS.2006.4600303
  30. Lopes, P.A.C.; Piedade, M.S.. "Sensitivity to the secondary path modeling errors of the bandwidth limited modified fx-lms algorithm". 13th International Congress on Sound and Vibration 2006, ICSV 2006 1 (2006): 145-152. http://www.scopus.com/inward/record.url?eid=2-s2.0-84883403523&partnerID=MN8TOARS.
  31. Lopes, P.A.C.; Germano, J.; Almeida, T.M.; Sousa, L.; Piedade, M.S.; Cardoso, F.; Ferreira, H.A.; Freitas, P.P.. "Determination of biological expression signals on a new handheld biochip-based microsystem". IEEE 2006 Biomedical Circuits and Systems Conference Healthcare Technology, BioCAS 2006 (2006): 57-60. http://www.scopus.com/inward/record.url?eid=2-s2.0-52949107593&partnerID=MN8TOARS.
    10.1109/BIOCAS.2006.4600307
  32. Germano, J.; Piedade, M.S.; Sousa, L.; Almeida, T.M.; Lopes, P.; Cardoso, F.A.; Ferreira, H.A.; Freitas, P.P.. "Microsystem for biological analysis based on magnetoresistive sensing". 18th IMEKO World Congress 2006: Metrology for a Sustainable Development 2 (2006): 1107-1112. http://www.scopus.com/inward/record.url?eid=2-s2.0-84877732286&partnerID=MN8TOARS.
  33. Lopes, P.. "Preventing noise amplification through anti-noise band limiting in multi-channel active noise control systems". 12th International Congress on Sound and Vibration 2005, ICSV 2005 2 (2005): 980-987. http://www.scopus.com/inward/record.url?eid=2-s2.0-84881592762&partnerID=MN8TOARS.
  34. Lopes, P.A.C.. "The behavior of the modified FX-LMS algorithm with secondary path modeling errors". IEEE Signal Processing Letters 11 2 PART II (2004): 148-151. http://www.scopus.com/inward/record.url?eid=2-s2.0-0442326790&partnerID=MN8TOARS.
    10.1109/LSP.2003.821745
  35. Lopes, P.A.C.; Piedade, M.S.. "Effects of secondary path modeling errors on the Modified FX-LMS algorithm for active noise control". ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings 5 (2001): 3213-3216. http://www.scopus.com/inward/record.url?eid=2-s2.0-0034841761&partnerID=MN8TOARS.