David López

Ico_CTTC
David López | CTTC

Adaptive Processing Technologies (ADAPT)

Phd , Researcher

Phone: +34 93 645 29 00

David Lopez Bueno received his MSc. degree in Telecommunications Engineering from the Universitat Politècnica de Catalunya (UPC) in 2005 and a Postgraduate certificate in Education (Mathematics) from the Universidad Complutense de Madrid (UCM) in 2007.

Between 2003 and 2006 he worked near 4 years as RF design engineer at Mier Comunicaciones and Alcatel Alenia Space España (now Thales Alenia Space España) participating in the design, implementation and validation of RF/uW modules and MMIC devices for satellite payloads (AMHERIS/AMAZONAS, TRMO, Galileo ISBT TTC Transponders and ICO G1 programmes).

By the end of 2006, he joined the Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) as Research Engineer where he has contributed to several national and European publicly funded projects (MIMOWA, BuNGEE, BeFEMTO, GEDOMIS-ADCOMM, GRE3N, EMPhAtiC, Flex5Gware and HIPOCRATES-AEThER, from 2006 to 2018) by: i) building multi-band RF Transceivers and contributing to lab demonstrators validating 4G/5G MIMO OFDM-based schemes such as the GEDOMIS® testbed; ii) evaluating the coexistence between heterogeneous systems in spectrum sharing scenarios and the transceiver energy trade-offs; iii) conceiving wideband high-end modular radios; and iv) researching and designing digital linearization techniques, such as crest factor reduction (CFR) and digital predistortion (DPD), for wideband radio access and wireless backhaul infrastructure transmitters, and building the experimental demonstrators for RF/uW/mmW applications such as the SHAPER platform.

At CTTC, he has also been involved in industrial projects assessing the risk of interference between FS and FSS systems in rural Europe (ROSE-ERO, 2011) and, in the last years, aiming at researching and experimental benchmarking wideband PA linearization techniques and efficient transmitter architectures for backhaul equipment (DI-PRE-DATORS, 2012-2013), 5G radio access transmitters (5G-TRIDENT, FUTURETX, ITERATE, 2017-2020) and cable TV systems (DPD4CABLE, 2017-2018).

David is Researcher at CTTC’s PHYCOM department since 2013 and Coordinator of the Radio Technologies Laboratory since 2009. David is currently pursuing a PhD thesis in Machine Learning Techniques Applied to Digital Predistortion Linearization. He is IEEE member since 2013, IEEE Senior Member since 2018,  and regular reviewer of a number of IEEE journals.

More detailed information:

* David is leading the Mixed-signal processing for efficient 5G & beyond transmitters research line and the SHAPER digital linearization platform.  7 projects (3 competitive R&D projects, 4 industrial contracts) and about 20 publications have been carried out in the frame of this research line over the last 7 years. The use of machine learning techniques applied to digital linearization is gaining momentum over the last years and has motivated the Fast Prototyping of AI-Enhanced Solutions. All the applied research work is experimentally validated in the Radio Technologies Laboratory (nowadays Wireless Communication Lab) led by him.

* Education, scientific publications, role and work in competitive R&D and Technology Transfer projects, areas of specialization and expertise, lab coordination and demonstrators, event organization, student supervision, scientific reviews, recognition/awards and membership information, are all further detailed in his Linkedin profile.

* ORCID ID 0000-0002-9005-0532, Google Scholar, and ResearchGate profiles.

 

 

Agile FPGA Computing at the 5G Edge: Joint Management of Accelerated and Software Functions for Open Radio Access Technologies
ELECTRONICS. Vol. 13. No. 4. January 2024.
Bartzoudis, N, Fernández, JR, López-Bueno, D, Villarroel, AR, Antonopoulos, A
10.3390/electronics13040701 Google Scholar
FPGA Implementation of a Linearization System for Wideband Envelope Tracking Power Amplifiers
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. Vol. 71. No. 4. pp. 1781-1792 January 2023.
Li W., Bartzoudis N., Fernandez, JR, López-Bueno D., Montoro G., Gilabert P.L.
10.1109/TMTT.2022.3217842 Google Scholar
Applying Digital Twins to Optical Networks with Cloud-Native SDN Controllers
IEEE COMMUNICATIONS MAGAZINE. Vol. 61. No. 12. pp. 128-134 January 2023.
Vilalta R., Gifre L., Casellas R., Munoz R., Martinez R., Mozo A., Pastor A., Lopez D., Fernandez-Palacios J.P.
10.1109/MCOM.003.2300105 Google Scholar
Slow-Envelope Shaping Function FPGA Implementation for 5G NR Envelope Tracking PA
2022 International Workshop On Integrated Nonlinear Microwave And Millimetre-Wave Circuits, Inmmic 2022 - Proceedings. January 2022.
Li W., Bartzoudis N., Fernandez J.R., Lopez-Bueno D., Montoro G., Gilabert P.
10.1109/INMMiC54248.2022.9762194 Google Scholar
Training Data Selection and Dimensionality Reduction for Polynomial and Artificial Neural Network MIMO Adaptive Digital Predistortion
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. Vol. 70. No. 11. pp. 4940-4954 January 2022.
Lopez-Bueno, D., Montoro, G., Gilabert, P.L.
10.1109/TMTT.2022.3209214 Google Scholar
Dataset Reduction for Neural Network Based Digital Predistorters under Strong Nonlinearities
IEEE Topical Conference on Power Amplifiers for Wireless and Radio Applications. pp. 8-11 March 2021.
Lopez-Bueno, D, Gilabert, PL, Montoro, G
10.1109/PAWR51852.2021.9375506 Google Scholar
INSPIRE-5Gplus: Intelligent security and pervasive trust for 5G and beyond networks
Acm International Conference Proceeding Series. August 2020.
Ortiz J., Sanchez-Iborra R., Bernabe J.B., Skarmeta A., Benzaid C., Taleb T., Alemany P., Muñoz R., Vilalta R., Gaber C., Wary J.-P., Ayed D., Bisson P., Christopoulou M., Xilouris G., De Oca E.M., Gür G., Santinelli G., Lefebvre V., Pastor A., Lopez D.
10.1145/3407023.3409219 Google Scholar
Technologies for emergency rollout of broadband public protection and disaster relief (BB-PPDR) communications in humanitarian crisis zones
Information and Communication Technologies for Humanitarian Services. pp. 215-246 January 2020.
López-Bueno, D., Bartzoudis, N., Font-Bach, O., Caus, M., Gilabert, P., Montoro, G.
Google Scholar
Machine Learning for Digital Front-End: a Comprehensive Overview
Machine Learning For Future Wireless Communications. pp. 329-381 January 2020.
Gilabert, Pere L., Lopez-Bueno, David, Thi Quynh Anh Pham, Montoro, Andgabriel
10.1002/9781119562306 Google Scholar
Spectral Weighting Orthogonal Matching Pursuit Algorithm for Enhanced Out-of-Band Digital Predistortion Linearization
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS. Vol. 66. No. 7. pp. 1277-1281 July 2019.
Gilabert, PL, Lopez-Bueno, D, Montoro, G
10.1109/TCSII.2018.2878581 Google Scholar
Dynamic Selection and Estimation of the Digital Predistorter Parameters for Power Amplifier Linearization
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. Vol. 67. No. 10. pp. 3996-4004 January 2019.
Pham, QA, Montoro, G, Lopez-Bueno, D, Gilabert, PL
10.1109/TMTT.2019.2923186 Google Scholar
Dynamic Selection and Update of Digital Predistorter Coefficients for Power Amplifier Linearization
2019 Ieee Topical Conference On Rf/microwave Power Amplifiers For Radio And Wireless Applications, Pawr 2019. January 2019.
Pham Q.A., Lopez-Bueno D., Montoro G., Gilabert P.L.
10.1109/PAWR.2019.8708732 Google Scholar
Machine Learning for Digital Front End: a Comprehensive Overview
Machine Learning for Future Wireless Communications. January 2019.
P. L. Gilabert, D. López-Bueno, Q. A. Pham, G. Montoro
Google Scholar
Design, implementation and experimental validation of a 5G energy-aware reconfigurable hotspot
COMPUTER COMMUNICATIONS. Vol. 128. pp. 1-17 January 2018.
Font-Bach, O, Bartzoudis, N, Miozzo, M, Donato, C, Harbanau, P, Requena-Esteso, M, Lopez-Bueno, D, Serrano, P, Mangues-Bafalluy, J, Payaro, M
10.1016/j.comcom.2018.06.008 Google Scholar
Independent Digital Predistortion Parameters Estimation Using Adaptive Principal Component Analysis
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. Vol. 66. No. 12. pp. 5771-5779 January 2018.
Lopez-Bueno, D, Pham, QA, Montoro, G, Gilabert, PL
10.1109/TMTT.2018.2870420 Google Scholar
Partial Least Squares Identification of Multi Look-Up Table Digital Predistorters for Concurrent Dual-Band Envelope Tracking Power Amplifiers
IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES. Vol. 66. No. 12. pp. 5143-5150 January 2018.
Pham, QA, Lopez-Bueno, D, Wang, T, Montoro, G, Gilabert, PL
10.1109/TMTT.2018.2857819 Google Scholar
Adaptive Principal Component Analysis for Online Reduced Order Parameter Extraction in PA Behavioral Modeling and DPD Linearization
IEEE MTT-S International Microwave Symposium. Vol. 2018-June. pp. 160-163 January 2018.
Pham, QA, Lopez-Bueno, D, Montoro, G, Gilabert, PL
10.1109/MWSYM.2018.8439588 Google Scholar
SDR and NFV extensions in the ns-3 LTE module for 5G rapid prototyping
IEEE Wireless Communications and Networking Conference. Vol. 2018-April. pp. 1-6 January 2018.
Miozzo, M, Bartzoudis, N, Requena, M, Font-Bach, O, Harbanau, P, Lopez-Bueno, D, Payaro, M, Mangues, J
10.1109/WCNC.2018.8377237 Google Scholar
Multi-dimensional LUT-based digital predistorter for concurrent dual-band envelope tracking power amplifier linearization
Pawr 2018 - Proceedings 2018 Ieee Topical Conference On Power Amplifiers For Wireless And Radio Applications. Vol. 2018-January. pp. 47-50 January 2018.
Pham Q.A., Lopez-Bueno D., Wang T., Montoro G., Gilabert P.L.
10.1109/PAWR.2018.8310064 Google Scholar
Multi-Dimensional LUT-based Digital Predistorter for Concurrent Dual-Band Envelope Tracking Power Amplifier Linearization
Ieee Topical Conference On Power Amplifiers For Wireless And Radio Applications. pp. 47-50 January 2018.
Pham, QA, López-Bueno, D, Wang, T, Montoro, G, Gilabert, PL
Google Scholar
Energy footprint reduction in 5G reconfigurable hotspots via function partitioning and bandwidth adaptation
2017 5th International Workshop On Cloud Technologies And Energy Efficiency In Mobile Communication Networks, Cleen 2017. January 2017.
Bartzoudis N., Font-Bach O., Miozzo M., Donato C., Harbanau P., Requena M., Lopez D., Ucar I., Salona A.A., Serrano P., Mangues J., Payaro M.
10.23919/CLEEN.2017.8045934 Google Scholar
Real-time implementation and experimental validation of a DL FBMC system
Orthogonal Waveforms and Filter Banks for Future Communication Systems. January 2017.
O. Font-Bach, N. Bartzoudis, D. López-Bueno, X. Mestre, P. Mêge, L. Martinod, T. André Myrvoll, V. Ringset
Google Scholar
Real-Time Implementation and Experimental Validation of a DL FBMC System
Orthogonal Waveforms And Filter Banks For Future Communication Systems. pp. 513-546 January 2017.
Font-Bach, O, Bartzoudis, N, Bueno, DL, Mestre, X, Mège, P, Martinod, L, Myrvoll, TA, Ringset, V
10.1016/B978-0-12-810384-5.00020-7 Google Scholar
Amping Up, Saving Power
IEEE MICROWAVE MAGAZINE. Vol. 17. No. 1. pp. 79-87 January 2016.
Lopez-Bueno, D, Wang, T, Gilabert, PL, Montoro, G
10.1109/MMM.2015.2488338 Google Scholar
Amping Up, Saving Power: Digital Predistortion Linearization Strategies for Power Amplifiers Under Wideband 4G/5G Burst-Like Waveform Operation
IEEE MICROWAVE MAGAZINE. Vol. 17. No. 1. pp. 79-87 January 2016.
D. López-Bueno, T. Wang, P. L. Gilabert, G. Montoro
Google Scholar
When SDR meets a 5G candidate waveform: providing efficient use of fragmented spectrum and interference protection for PMR networks
IEEE Wireless Communications. Vol. 22. No. 6. pp. 56-66 December 2015.
O. Font-Bach, N. Bartzoudis, X. Mestre, D. López-Bueno, P. Mege, L. Martinod, V. Ringset, T. André Myrvoll
Google Scholar
When SDR meets a 5G candidate waveform: Agile use of fragmented spectrum and interference protection in PMR networks
IEEE WIRELESS COMMUNICATIONS. Vol. 22. No. 6. pp. 56-66 January 2015.
Font-Bach, O, Bartzoudis, N, Mestre, X, Lopez-Bueno, D, Mege, P, Martinod, L, Ringset, V, Myrvoll, TA
10.1109/MWC.2015.7368825 Google Scholar
Interference management in LTE-based HetNets: A practical approach
Transactions on Emerging Telecommunications Technologies. Vol. 26. No. 2. pp. 195-215 January 2015.
Font-Bach, O, Bartzoudis, N, Pascual-Iserte, A, Payaro, M, Blanco, L, Bueno, DL, Molina, M
10.1002/ett.2833 Google Scholar
Implementation and performance evaluation of an FBMC-based PMR system for broadband PPDR applications
2015 12th International Symposium On Wireless Communication Systems (iswcs). January 2015.
Font-Bach, O, Bartzoudis, N, Lopez, D, Payaro, M
Google Scholar
Experimental performance evaluation of a 5G spectrum sharing scenario based on field-measured channels
2015 Ieee 26th Annual International Symposium On Personal, Indoor, And Mobile Radio Communications (pimrc). Vol. 2015-December. pp. 856-861 January 2015.
Font-Bach, O, Bartzoudis, N, Lopez, D, Vinogradov, E, Payaro, M, Oestges, C, Myrvoll, TA, Ringset, V
10.1109/PIMRC.2015.7343417 Google Scholar
SDN/NFV orchestration for dynamic deployment of virtual SDN controllers as VNF for multi-tenant optical networks
2015 Optical Fiber Communications Conference And Exhibition (ofc). Vol. 2015-June. January 2015.
Munoz, R, Vilalta, R, Casellas, R, Martinez, R, Szyrkowiec, T, Autenrieth, A, Lopez, V, Lopez, D
10.1364/ofc.2015.w4j.5 Google Scholar
Peak Cancellation and Digital Predistortion of High-Order QAM Wideband Signals for Next Generation Wireless Backhaul Equipment
2014 International Workshop On Integrated Nonlinear Microwave And Millimetre-Wave Circuits (inmmic). January 2014.
Lopez, D, Gilabert, PL, Montoro, G, Bartzoudis, N
Google Scholar
Order reduction of wideband digital predistorters using principal component analysis
IEEE MTT-S International Microwave Symposium. January 2013.
Gilabert, PL, Montoro, G, Lopez, D, Bartzoudis, N, Bertran, E, Payar, M, Hourtane, A
10.1109/MWSYM.2013.6697687 Google Scholar
A real-time FPGA-based implementation of a high-performance MIMO-OFDM transceiver featuring a closed-loop communication scheme
International Conference on Wireless and Mobile Computing, Networking and Communications. pp. 100-107 January 2012.
Font-Bach O., Bartzoudis N., Pascual-Iserte A., López Bueno D.
10.1109/WiMOB.2012.6379060 Google Scholar
MATLAB as a Design and Verification Tool for the Hardware Prototyping of Wireless Communication Systems
MATLAB. Vol. 12. January 2012.
O. Font-Bach, A. Pascual-Iserte, N. Bartzoudis, D. López-Bueno
10.5772/3338 Google Scholar
A real-time MIMO-OFDM mobile WiMAX receiver: Architecture, design and FPGA implementation
COMPUTER NETWORKS. Vol. 55. No. 16. pp. 3634-3647 November 2011.
Font-Bach, O, Bartzoudis, N, Pascual-Iserte, A, Bueno, DL
10.1016/j.comnet.2011.02.018 Google Scholar
A real-time FPGA-based mobile WiMAX transceiver supporting multi-antenna configurations
2011 Argentine School Of Micro-Nanoelectronics, Technology And Applications, Eamta 2011. pp. 46-51 January 2011.
Bartzoudis N., Font-Bach O., Pascual-Iserte A., Bueno D.L.
Google Scholar
Prototyping processing-demanding physical layer systems featuring single or multi-antenna schemes
European Signal Processing Conference. pp. 1504-1508 January 2011.
Font-Bach O., Bartzoudis N., Pascual-Iserte A., López Bueno D.
Google Scholar
Nehir Sonmez
Researcher R3
Antonio Román
Researcher PO
José Rubio
Researcher R2
David López
Researcher R2
Nikolaos Bartzoudis
Researcher R3