George Lentaris
George Lentaris holds a PhD in Computing from the National & Kapodistrian University of Athens (NKUA), Greece, as well as two MSc degrees in “Logic, Algorithms, and Computation” and in “Electronic Automation”, with a BSc in Physics (all awarded by NKUA). His research interests are, generally, in digital circuit design for signal processing. More specifically, his work includes extensive FPGA design, high-performance embedded systems, heterogeneous many-core architectures, parallel architectures and algorithms for applications in: image/video processing, computer vision algorithms, feature extraction, AI convolutional neural networks, hyperspectral image processing, H.264/AVC compression, motion estimation techniques, parallel memories organization, 1D/2D signal interpolation and filtering, FFT implementations, OFDM synchronization and baseband processing in telecommunications, 5G/6G edge computing, AI/ML acceleration, on-board data handling for satallite payloads, as well as process variability and reliability of embedded devices (including radiation testing of FPGA and TPU for space).
Currently, George Lentaris is an assistant professor at the dpt. of Informatics & Computer Engineering at the University of West Attica (UNIWA) and senior researcher at the National Technical University (NTUA), in Athens, Greece. His courses (and/or lab assistance) include Signals and Systems, Digital Circuit Design, Computer Architecture, and Introduction to Parallel Computing. In the past, he was working as a research associate at NTUA for 10+ years (microlab/ECE) and giving multiple lectures at NKUA for Video Compression, Digital Signal Processors, and Embedded Systems. He has participated in more than 18 research projects funded by the European Space Agency, European Commission, and Greece, both as an engineer and technical coordinator. In summary, the projects regarded high-performance embedded computing for space (ESA) and telecom (Horizon). He has co-authored 60+ peer-reviewed papers (21+ in prestigious scientific journals, such as transactions of IEEE and ACM, and 40+ in international conferences), with 730+ total citations, and he has served as a regular reviewer for 14+ journals/conferences (IEEE Trans. on Circuits & Systems for Video Technology, IEEE Trans. on Image Processing, etc.).
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Aging Evaluation and Mitigation Techniques Targeting FPGA Devices
Low-Power Circuits for Emerging Applications in Communications, Computing, and Sensing, DOI: https://doi.org/10.1201/9780429507564
Book Chapters
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Design Space Exploration on High-Order QAM Demodulation Circuits: Algorithms, Arithmetic and Approximation Techniques
Electronics -
- George Lentaris ,
- Konstantinos Maragos ,
- Dimitrios Soudris ,
- F. Di Capua ,
- L. Campajola ,
- A. Constantino ,
- Gianluca Furano ,
- A. Tavoularis and
- L. Santos
TID evaluation system with on-chip electron source and programmable sensing mechanisms on FPGA
IEEE Transactions on Nuclear Science, 2019, DOI: 10.1109/TNS.2018.2885713 -
- George Lentaris ,
- Konstantinos Maragos ,
- Dimitrios Soudris ,
- Xenophon Zabulis and
- Manolis Lourakis
Single- and multi-FPGA acceleration of dense stereo vision for planetary rovers
ACM Transactions on Embedded Computing Systems, 2019, DOI: 10.1145/3312743 -
In-the-Field Mitigation of Process Variability for Improved FPGA Performance
IEEE Transactions on Computers, 2019, DOI: 10.1109/TC.2019.2898833 -
- George Lentaris ,
- Ioannis Stratakos ,
- Ioannis Stamoulias ,
- Dimitrios Soudris ,
- Manolis Lourakis and
- Xenophon Zabulis
High-Performance Vision-Based Navigation on SoC FPGA for Spacecraft Proximity Operations
IEEE Transactions on Circuits and Systems for Video Technology, 2020, DOI: 10.1109/TCSVT.2019.2900802 -
- K. Kanta ,
- A. Pagano ,
- E. Ruggeri ,
- M. Agus ,
- Ioannis Stratakos ,
- R. Mercinelli ,
- C. Vagionas ,
- P. Toumasis ,
- G. Giannoulis ,
- George Lentaris ,
- D. Apostolopoulos ,
- N. Pleros ,
- Dimitrios Soudris and
- Hercules Avramopoulos
Analog fiber-wireless downlink transmission of IFoF/mmWave over in-field deployed legacy PON infrastructure for 5G fronthauling
Journal of Optical Communications and Networking, 2020, DOI: 10.1364/JOCN.391803 -
- George Lentaris ,
- Konstantinos Maragos ,
- Ioannis Stratakos ,
- Lazaros Papadopoulos ,
- Odysseas Papanikolaou ,
- Dimitrios Soudris ,
- Manolis Lourakis ,
- Xenophon Zabulis ,
- David Gonzalez-Arjona and
- Gianluca Furano
High-Performance Embedded Computing in Space: Evaluation of Platforms for Vision-Based Navigation
Journal of Aerospace Information Systems, Feb. 2018 DOI: 10.2514/1.I010555 -
- Konstantinos Maragos ,
- Panagiotis Kontzilas ,
- George Lentaris ,
- Christos Spatharakis ,
- Stefanos Dris ,
- Paraskevas Bakopoulos ,
- Hercules Avramopoulos and
- Dimitrios Soudris
A Flexible, High-Performance FPGA Implementation of a Feed-Forward Equalizer for Optical Interconnects up to 112 Gb/s
Journal of Signal Processing Systems, 26 November 2016 DOI: 10.1007/s11265-016-1201-y -
- George Lentaris ,
- Ioannis Stamoulias ,
- Dimitrios Soudris and
- Manolis Lourakis
HW/SW co-design and FPGA acceleration of visual odometry algorithms for rover navigation on Mars
IEEE Transactions on Circuits and Systems for Video Technology, Volume: 26, Issue: 8, Aug. 2016 -
- I. Kostavelis ,
- Lazaros Nalpantidis ,
- Evangelos Boukas ,
- Marcos Avilés Rodrigálvarez ,
- Ioannis Stamoulias ,
- George Lentaris ,
- Dionisis Diamantopoulos ,
- Kostas Siozios ,
- Dimitrios Soudris and
- Antonios Gasteratos
SPARTAN: Developing a Vision System for Future Autonomous Space Exploration Robots
Journal of Field Robotics, Special Issue: Special Issue on Space Robotics, Part 2, Volume 31, Issue 1, pages 107– 140, January/February 2014
Journals
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ApproxQAM: High-Order QAM Demodulation Circuits with Approximate Arithmetic
2021 10th International Conference on Modern Circuits and Systems Technologies (MOCAST) -
Voltage Scaling and Guardband Customization of Multiple Constituent Components in SoC-FPGA
2019 29th International Symposium on Power and Timing Modeling, Optimization and Simulation (PATMOS), DOI: https://doi.org/10.1109/PATMOS.2019.8862050 -
A Framework Exploiting Process Variability to Improve Energy Efficiency in FPGA Applications
GLSVLSI '18: Proceedings of the 2018 on Great Lakes Symposium on VLSI, DOI: https://doi.org/10.1145/3194554.3194569 -
FPGA acceleration of hyperspectral image processing for high-speed detection applications
Proceedings - IEEE International Symposium on Circuits and Systems DOI: 10.1109/ISCAS.2017.8050773 -
- V. Kostalampros ,
- George Lentaris ,
- Dimitrios Soudris ,
- Christos Spatharakis ,
- N. Argyris ,
- Hercules Avramopoulos ,
- Stefanos Dris and
- A. Richter
Carrier Phase Recovery of 64 GBd Optical 16-QAM Using Extensive Parallelization on an FPGA
Proceedings - IEEE International Symposium on Circuits and Systems DOI: 10.1109/ISCAS.2018.8351581 -
A framework exploiting process variability to improve energy eficiency in FPGA applications
Proceedings of the ACM Great Lakes Symposium on VLSI, GLSVLSI DOI: 10.1145/3194554.3194569 -
- V. Kostalampros ,
- Christos Spatharakis ,
- Konstantinos Maragos ,
- George Lentaris ,
- N. Argyris ,
- Stefanos Dris ,
- A. Richter ,
- Hercules Avramopoulos and
- Dimitrios Soudris
Real-time carrier phase recovery for 16-QAM utilizing the nonlinear least squares algorithm
2018 Optical Fiber Communications Conference and Exposition, OFC 2018 - Proceedings DOI: 10.1364/OFC.2018.W2A.49 -
- Konstantinos Maragos ,
- Vasileios Leon ,
- George Lentaris ,
- Dimitrios Soudris ,
- David Gonzalez-Arjona ,
- R. Domingo ,
- A. Pastor ,
- D. M. Codinachs and
- I. Conway
Evaluation Methodology and Reconfiguration Tests on the New European NG-MEDIUM FPGA
2018 NASA/ESA Conference on Adaptive Hardware and Systems, AHS 2018, DOI: 10.1109/AHS.2018.8541492 -
- V. Kitsakis ,
- E. Papatheofanous ,
- Dionysios Reisis ,
- George Lentaris and
- Dimitrios Soudris
Parity Based In-Place FFT Architecture for Continuous Flow Applications
2018 25th IEEE International Conference on Electronics Circuits and Systems, ICECS 2018, DOI: 10.1109/ICECS.2018.8617990 -
- N. Dimou ,
- Manolis Lourakis ,
- George Lentaris ,
- Dimitrios Soudris and
- Dionysios Reisis
Parallel Robust Absolute Orientation on FPGA for Vision and Robotics
2018 25th IEEE International Conference on Electronics Circuits and Systems, ICECS 2018, DOI: 10.1109/ICECS.2018.8617856 -
- Konstantinos Maragos ,
- E. Taka ,
- George Lentaris ,
- Ioannis Stratakos and
- Dimitrios Soudris
Analysis of performance variation in 16nm FinFET FPGA devices
Proceedings - 29th International Conference on Field-Programmable Logic and Applications, FPL 2019, DOI: 10.1109/FPL.2019.00016 -
- V. Kitsakis ,
- K. Kanta ,
- Ioannis Stratakos ,
- G. Giannoulis ,
- D. Apostolopoulos ,
- George Lentaris ,
- Hercules Avramopoulos ,
- Dimitrios Soudris and
- Dionysios Reisis
Design of a Real-Time DSP Engine on RF-SoC FPGA for 5G Networks
Lecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics), 2020, DOI: 10.1007/978-3-030-38085-4_46 -
- George Lentaris ,
- G. Chatzitsompanis ,
- Vasileios Leon ,
- Kiamal Pekmestzi and
- Dimitrios Soudris
Combining arithmetic approximation techniques for improved CNN circuit design
ICECS 2020 - 27th IEEE International Conference on Electronics, Circuits and Systems, Proceedings, DOI: 10.1109/ICECS49266.2020.9294869 -
- George Lentaris ,
- Ioannis Stratakos ,
- Ioannis Stamoulias ,
- Konstantinos Maragos ,
- Dimitrios Soudris ,
- Manolis Lourakis ,
- Xenophon Zabulis and
- David Gonzalez-Arjona
Project HIPNOS: Case Study of High Performance Avionics for Active Debris Removal in Space
in IEEE Computer Society Annual Symposium on VLSI (ISVLSI), 2017 -
- Konstantinos Maragos ,
- George Lentaris ,
- Kostas Siozios ,
- Dimitrios Soudris and
- Vasilis Pavlidis
Application Performance Improvement By Exploiting Process Variability On FPGA Devices
in Proc. 20th Design Automation & Testing Exhibition (DATE), 2017 -
- Ioannis Stratakos ,
- Dionysios Reisis ,
- George Lentaris ,
- Konstantinos Maragos and
- Dimitrios Soudris
A Co-Design Approach For Rapid Prototyping Of Image Processing On SoC FPGAs
in ACM Proc. of PCI, 2016 -
- Christos Spatharakis ,
- Giannis Kanakis ,
- Nikolaos Iliadis ,
- Paraskevas Bakopoulos ,
- Hercules Avramopoulos ,
- Konstantinos Maragos ,
- George Lentaris and
- Dimitrios Soudris
A 56 Gbaud Reconfigurable FPGA Feed-Forward Equalizer for Optical Datacenter Networks with flexible Baudrate- and ModulationFormat
2016 IEEE International Conference on Electronics, Circuits and Systems (ICECS), 2016 -
- George Lentaris ,
- Ioannis Stamoulias ,
- Konstantinos Maragos ,
- Dionisis Diamantopoulos ,
- Kostas Siozios ,
- Dimitrios Soudris ,
- Marcos Avilés Rodrigálvarez ,
- Manolis Lourakis ,
- Xenophon Zambulis ,
- I. Kostavelis ,
- Lazaros Nalpantidis ,
- Evangelos Boukas and
- Antonios Gasteratos
SPARTAN/SEXTANT/COMPASS: Advancing Space Rover Vision via Reconfigurable Platforms
in Proceedings of the 11th International Symposium on Applied Reconfigurable Computing (ARC), 2015 -
- George Lentaris ,
- Dionisis Diamantopoulos ,
- G. Stamoulias ,
- Kostas Siozios ,
- Dimitrios Soudris and
- Marcos Avilés Rodrigálvarez
FPGA-based Path-planning of High Mobility Rover for Future Planetary Missions
in Proc. 19th IEEE International Conference on Electronics, Circuits, and Systems, 2012 -
- Dionisis Diamantopoulos ,
- George Lentaris ,
- Kostas Siozios and
- Dimitrios Soudris
Hardware Implementation of Stereo Correspondence Algorithm for the Exomars Mission
in Proccedings of Field Programmable Logic (FPL), 2012 -
- Dionisis Diamantopoulos ,
- George Lentaris ,
- Kostas Siozios ,
- Dimitrios Soudris and
- Marcos Avilés Rodrigálvarez
SPARTAN Project: On Profiling Computer Vision Algorithms for Rover Navigation
in Proceedings of NASA/ESA Conference on Adaptive Hardware and Systems (AHS), 2012 -
- Dionisis Diamantopoulos ,
- George Lentaris ,
- A. Douklias ,
- Kostas Siozios ,
- Dimitrios Soudris and
- Marcos Avilés Rodrigálvarez
“The SPARTAN Project: FPGA-based Implementation of Computer Vision Algorithms Targeting to Space Applications”
PAnhellenic Conference on Electronics and Telecommunications (PACET), 2011, Greece -
- Dionisis Diamantopoulos ,
- Panagiotis Galiatsatos ,
- Athanasios Karachalios ,
- George Lentaris ,
- Dionysios Reisis and
- Dimitrios Soudris
Configurable Baseband Digital Transceiver for Gbps Wireless 60 GHz Communications
in Proceedings of 18th IEEE International Conference on Electronics, Circuits, and Systems (ICECS), 2011
Conferences
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- Konstantinos Maragos ,
- Panagiotis Kontzilas ,
- George Lentaris ,
- Christos Spatharakis ,
- Stefanos Dris ,
- Paraskevas Bakopoulos ,
- Hercules Avramopoulos and
- Dimitrios Soudris
A Real-Time, High-Performance FPGA Implementation of a Feed-Forward Equalizer for Optical Interconnects
in 10th HiPEAC Workshop on Reconfigurable Computing, January 19th, 2016, Prague -
- Dionisis Diamantopoulos ,
- Panagiotis Galiatsatos ,
- Athanasios Karachalios ,
- George Lentaris ,
- Dionysios Reisis and
- Dimitrios Soudris
A Reconfigurable Baseband Architecture for Gbps Wireless 60 GHz Communications
in DEPCP Friday Workshop,held in conjunction with the DATE 2013 Conference -
- George Lentaris ,
- Dionisis Diamantopoulos ,
- Kostas Siozios ,
- Ioannis Stamoulias ,
- I. Kostavelis ,
- Evangelos Boukas ,
- Lazaros Nalpantidis ,
- Dimitrios Soudris and
- Antonios Gasteratos
SPARTAN: Efficient Implementation of Computer Vision Algorithms for Autonomous Rover Navigation
in Workshop on Reconfigurable Computing (WRC), January 21, 2013, Co-located with HiPEAC Conference 2013, Berlin, Germany -
- George Lentaris ,
- Ioannis Stamoulias ,
- Dionisis Diamantopoulos ,
- Kostas Siozios and
- Dimitrios Soudris
An FPGA implementation of SURF algorithm for the ExoMars programme
in Workshop on Reconfigurable Computing (WRC), January 21, 2013, Co-located with HiPEAC Conference 2013, Berlin, Germany -
- Dionisis Diamantopoulos ,
- George Lentaris ,
- Kostas Siozios ,
- Dimitrios Soudris and
- Marcos Avilés Rodrigálvarez
Towards Accelarating Computer Vision Algorithms Targeting to Space Applications with a Heterogeneous Platform
in DATE 2012 Friday Workshop on Designing for Embedded Parallel Computing Platforms: Architectures, Design Tools, and Applications (DEPCP 2012), Dresden, Germany, March 12- 16, 2012
Workshops
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Customized Redundancy Schemes for Improved Fault-Tolerance of FPGAs in Space Applications
Brief: PDF
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Customized Redundancy Schemes for Improved Fault-Tolerance of FPGAs in Space Applications
Brief: PDF