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Employment (2)

National Technical University of Athens: Athens, GR

2020-01 to present | Senior researcher (School of electrical and computer engineering / Photonics communications research laboratory )
Employment
Source: Self-asserted source
Nikolaos Lyras

Institute of Communication and Computer Systems: Zografos, Athens, GR

2016 to present | Senior researcher
Employment
Source: Self-asserted source
Nikolaos Lyras

Education and qualifications (1)

National Technical University of Athens: Athens, GR

2015-02 to 2019-07 | PhD (School of Electrical and Computer Engineering)
Education
Source: Self-asserted source
Nikolaos Lyras

Works (40)

Satellite-to-Ground QKD in Urban Environment: A Comparative Analysis of Small-Sized Optical Ground Stations

IEEE Aerospace and Electronic Systems Magazine
2024 | Journal article
Contributors: Argiris Ntanos; Nikolaos K. Lyras; Aristeidis Stathis; Giannis Giannoulis; Athanasios D. Panagopoulos; Hercules Avramopoulos
Source: check_circle
Crossref

Experimental feasibility analysis of quantum/classical coexistence over fibre and free space links

IET Quantum Communication
2024-12 | Journal article
Contributors: Aristeidis Stathis; Argiris Ntanos; Panagiotis Toumasis; Nikolaos K. Lyras; Giannis Giannoulis; Hercules Avramopoulos
Source: check_circle
Crossref

Satellite-to-Ground QKD SKR dataset for P&M and Entanglement-based Protocols

Zenodo
2024-11-08 | Dataset
Contributors: Argiris Ntanos; Aristeidis Stathis; Panagiotis Kourelias; Nikolaos Lyras; Giannis Giannoulis
Source: check_circle
DataCite

Satellite-to-Ground QKD SKR dataset for P&M and Entanglement-based Protocols

Zenodo
2024-11-08 | Dataset
Contributors: Argiris Ntanos; Aristeidis Stathis; Panagiotis Kourelias; Nikolaos Lyras; Giannis Giannoulis
Source: check_circle
DataCite
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DS1. Simulation transmission studies of assessing transmission performance of VCSEL-based transmitters across various temperatures and fiber lengths_SPRINTER_v1.0

Zenodo
2024-04-03 | Dataset
Contributors: Efstathios Andrianopoulos; Nikolaos Lyras; Georgios Megas
Source: check_circle
DataCite

Real-Time Sub-THz Link Enabled Purely by Optoelectronics: 90–310 GHz Seamless Operation

IEEE Photonics Technology Letters
2023-03-01 | Journal article
Contributors: Efstathios Andrianopoulos; Nikolaos K. Lyras; Evangelos Pikasis; Garrit Schwanke; Milan Deumer; Simon Nellen; Tianwen Qian; Georgia D. Ntouni; Eleftherios C. Loghis; Elias D. Tsirbas et al.
Source: check_circle
Crossref

Large - Scale LEO Satellite Constellation to Ground QKD links: Feasibility Analysis

2022 IEEE International Conference on Space Optical Systems and Applications, ICSOS 2022
2022 | Conference paper
EID:

2-s2.0-85128742286

Contributors: Ntanos, A.; Lyras, N.K.; Anwar, S.; Alia, O.; Zavitsanos, D.; Giannoulis, G.; Panagopoulos, A.D.; Kanellos, G.; Avramopoulos, H.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Optical Generation and Transmission of mmWave Signals in 5G ERA: Experimental Evaluation Paradigm

IEEE Photonics Technology Letters
2022-10-01 | Journal article
Contributors: Efstathios Andrianopoulos; Nikolaos K. Lyras; Christos Tsokos; Tianwen Qian; Simon Nellen; David de Felipe; Panos Groumas; Adam Raptakis; Lefteris Gounaridis; Norbert Keil et al.
Source: check_circle
Crossref

Leo satellites constellation-to-ground qkd links: Greek quantum communication infrastructure paradigm

Photonics
2021 | Journal article
EID:

2-s2.0-85121572935

Part of ISSN: 23046732
Contributors: Ntanos, A.; Lyras, N.K.; Zavitsanos, D.; Giannoulis, G.; Panagopoulos, A.D.; Avramopoulos, H.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Low-complexity optimization algorithm for ground network design in optical satellite networks

Proceedings of SPIE - The International Society for Optical Engineering
2021 | Conference paper
EID:

2-s2.0-85116026509

Part of ISSN: 1996756X 0277786X
Contributors: Efrem, C.N.; Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.; Arapoglou, P.-D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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On the Availability of the Decoy State BB84 QKD over a Terrestrial FSO Link

25th International Conference on Optical Network Design and Modelling, ONDM 2021
2021 | Conference paper
EID:

2-s2.0-85112332180

Contributors: Ntanos, A.; Zavitsanos, D.; Lyras, N.K.; Giannoulis, G.; Avramopoulos, H.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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True Time Delay Optical Beamforming Network Based on Hybrid Inp-Silicon Nitride Integration

Journal of Lightwave Technology
2021 | Journal article
EID:

2-s2.0-85112143091

Part of ISSN: 15582213 07338724
Contributors: Tsokos, C.; Andrianopoulos, E.; Raptakis, A.; Lyras, N.; Gounaridis, L.; Groumas, P.; Timens, R.B.; Visscher, I.; Grootjans, R.; Wefers, L.S. et al.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Cloud Free LOS Probability Estimation for MEO Optical Satellite Systems and Optical Satellite Network Dimensioning

14th European Conference on Antennas and Propagation, EuCAP 2020
2020 | Conference paper
EID:

2-s2.0-85088660453

Contributors: Efrem, C.N.; Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.; Arapoglou, P.-D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Ground-to-GEO optical feeder links for very high throughput satellite networks: Accent on diversity techniques

International Journal of Satellite Communications and Networking
2020 | Journal article
EID:

2-s2.0-85090924227

Part of ISSN: 15420981 15420973
Contributors: Mengali, A.; Kourogiorgas, C.I.; Lyras, N.K.; Shankar Mysore Rama Rao, B.; Kayhan, F.; Panagopoulos, A.D.; Bäumer, T.; Liolis, K.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Long Term Irradiance Statistics for Optical GEO Satellite Feeder Links: Validation Against Experimental Data

Wireless Personal Communications
2020 | Journal article
EID:

2-s2.0-85083977078

Part of ISSN: 1572834X 09296212
Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.; Liolis, K.P.; Sodnik, Z.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Optical beamforming networks supporting multibeam and multicast operation

International Conference on Transparent Optical Networks
2020 | Conference paper
EID:

2-s2.0-85092477274

Part of ISSN: 21627339
Contributors: Tsokos, C.; Andrianopoulos, E.; Raptakis, A.; Lyras, N.; Gounaridis, L.; Groumas, P.; Avramopoulos, H.; Kouloumentas, C.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Scintillation due to atmospheric turbulence on optical GEO and MEO satellite links: Time series synthesizer for system level simulations

International Journal of Satellite Communications and Networking
2020 | Journal article
EID:

2-s2.0-85093955794

Part of ISSN: 15420981 15420973
Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Optimizing the Ground Network of Optical MEO Satellite Communication Systems

IEEE Systems Journal
2020-09 | Journal article
Contributors: Nikolaos K. Lyras; Christos N. Efrem; Charilaos I. Kourogiorgas; Athanasios D. Panagopoulos; Pantelis.-Daniel Arapoglou
Source: check_circle
Crossref
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Optical Satellite Networks Performance: Channel Modeling, Mitigation Techniques & Optimization

2020-07-23 | Dissertation or Thesis
Contributors: Nikolaos Lyras
Source: Self-asserted source
Nikolaos Lyras

Deep-Space Optical Communication Link Engineering: Sensitivity Analysis

IEEE Aerospace and Electronic Systems Magazine
2019 | Journal article
EID:

2-s2.0-85074984243

Part of ISSN: 1557959X 08858985
Contributors: Lyras, N.K.; Panagopoulos, A.D.; Arapoglou, P.-D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Ground-to-Satellite Optical Link Turbulence Effects: Propagation Modelling Transmit Diversity Performance

13th European Conference on Antennas and Propagation, EuCAP 2019
2019 | Conference paper
EID:

2-s2.0-85068458524

Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Kapsis, T.T.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Long term irradiance statistics for optical GEO downlinks: Validation with ARTEMIS experimental measurements

Progress in Electromagnetics Research Letters
2019 | Journal article
EID:

2-s2.0-85066742235

Part of ISSN: 19376480
Contributors: Kapsis, T.T.; Lyras, N.K.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Medium earth orbit optical satellite communication networks: Ground terminals selection optimization based on the cloud-free line-of-sight statistics

International Journal of Satellite Communications and Networking
2019 | Journal article
EID:

2-s2.0-85056181133

Part of ISSN: 15420981 15420973
Contributors: Lyras, N.K.; Efrem, C.N.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Monthly cloud free LOS time series generator for optical satellite links

Progress in Electromagnetics Research Letters
2019 | Journal article
EID:

2-s2.0-85070703554

Part of ISSN: 19376480
Contributors: Lyras, N.K.; Kapsis, T.T.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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On Optical Satellite Communication Systems Design: CFLOS Calculation and OGS Selection

13th European Conference on Antennas and Propagation, EuCAP 2019
2019 | Conference paper
EID:

2-s2.0-85068464333

Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Kapsis, T.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Time series irradiance synthesizer for optical GEO satellite downlinks in 5G networks

Future Internet
2019 | Journal article
EID:

2-s2.0-85067481660

Part of ISSN: 19995903
Contributors: Kapsis, T.T.; Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Cloud attenuation prediction statistics for GeO and NGSO satellite communication systems operating at Q/V band and above

IET Conference Publications
2018 | Conference paper
EID:

2-s2.0-85057328748

Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Cloud free line of sight prediction modeling for low earth orbit optical satellite networks

Proceedings of SPIE - The International Society for Optical Engineering
2018 | Conference paper
EID:

2-s2.0-85072668982

Part of ISSN: 1996756X 0277786X
Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Experimental optical satellite downlink irradiance statistics and turbulence conditions estimation

IET Conference Publications
2018 | Conference paper
EID:

2-s2.0-85057311650

Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.; Liolis, K.P.; Sodnik, Z.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Monthly and Seasonal CFLOS Statistics for Optical GEO Feeder Links Design

Lecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
2018 | Book
EID:

2-s2.0-85043989494

Part of ISSN: 18678211
Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.; Liolis, K.P.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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On aperture averaging effects for central obscured telescopes: Experimental validation with artemis experimental downlink measurements

Proceedings of SPIE - The International Society for Optical Engineering
2018 | Conference paper
EID:

2-s2.0-85068436397

Part of ISSN: 1996756X 0277786X
Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.; Liolis, K.P.; Sodnik, Z.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Optimum Monthly Based Selection of Ground Stations for Optical Satellite Networks

IEEE Communications Letters
2018 | Journal article
EID:

2-s2.0-85044375113

Part of ISSN: 10897798
Contributors: Lyras, N.K.; Efrem, C.N.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Capacity Statistics Evaluation for Next Generation Broadband MEO Satellite Systems

IEEE Transactions on Aerospace and Electronic Systems
2017 | Journal article
EID:

2-s2.0-85032383825

Part of ISSN: 00189251
Contributors: Kourogiorgas, C.I.; Lyras, N.; Panagopoulos, A.D.; Tarchi, D.; Vanelli-Coralli, A.; Ugolini, A.; Colavolpe, G.; Arapoglou, P.-D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Cloud Free Line of Sight Prediction Modeling for Optical Satellite Communication Networks

IEEE Communications Letters
2017 | Journal article
EID:

2-s2.0-85029226734

Part of ISSN: 10897798
Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Optical feeder links study towards future generation MEO VHTS systems

35th AIAA International Communications Satellite Systems Conference, ICSSC 2017
2017 | Conference paper
EID:

2-s2.0-85048003974

Contributors: Mengali, A.; Shankar, B.; Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.; Liolis, K.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Optical satellite links channel modeling: Time series generator and mitigation techniques evaluation

2017 11th European Conference on Antennas and Propagation, EUCAP 2017
2017 | Conference paper
EID:

2-s2.0-85020208597

Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Rain attenuation statistics at Ka and Q band in Athens using SST and short scale dynamic diversity gain evaluation

2016 Loughborough Antennas and Propagation Conference, LAPC 2016
2017 | Conference paper
EID:

2-s2.0-85014079450

Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.; Ventouras, S.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Cloud Attenuation Statistics Prediction From <italic>Ka</italic>-Band to Optical Frequencies: Integrated Liquid Water Content Field Synthesizer

IEEE Transactions on Antennas and Propagation
2017-01 | Journal article
Part of ISSN: 0018-926X
Part of ISSN: 1558-2221
Source: Self-asserted source
Nikolaos Lyras
grade
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Cloud attenuation time series synthesizer for earth-space links operating at optical frequencies

Proceedings of the 2015 IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, IEEE APWC 2015
2015 | Conference paper
EID:

2-s2.0-84971475293

Contributors: Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
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Propagation measurements campaign in Athens with ALPHASAT at Ka-band using Software Defined Radio technologies

Proceedings of the 2015 International Conference on Electromagnetics in Advanced Applications, ICEAA 2015
2015 | Conference paper
EID:

2-s2.0-84955487983

Contributors: Papafragkakis, A.Z.; Lyras, N.K.; Kourogiorgas, C.I.; Panagopoulos, A.D.
Source: Self-asserted source
Nikolaos Lyras via Scopus - Elsevier
grade
Preferred source (of 3)‎