المؤلفون: Duncan, Juan Merlano, Martinez-Marrero, Liz, Querol, Jorge, Kumar, Sumit, Camps, Adriano, Chatzinotas, Symeon, Ottersten, Bjorn

مصطلحات موضوعية: Electrical Engineering and Systems Science - Signal Processing

URL الوصول: http://arxiv.org/abs/2011.10404

المؤلفون: Martínez Marrero, Liz, Merlano Duncan, Juan Carlos, González Rios, Jorge Luis, Krivochiza, Jevgenij, Chatzinotas, Symeon, Ottersten, Bjorn, Camps Carmona, Adriano José

المساهمون: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. CommSensLab-UPC - Centre Específic de Recerca en Comunicació i Detecció UPC

مصطلحات موضوعية: Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços, Artificial satellites in telecommunication, Geosynchronous orbit, Multi-beam satellite, Phase noise, Phase synchronization, Precoding, Software-defined radio, Satèl·lits artificials en telecomunicació

وصف الملف: 18 p.; application/pdf

Relation: https://ieeexplore.ieee.org/document/10356844; Martínez-Marrero, L. [et al.]. Accurate phase synchronization for precoding-enabled GEO multibeam satellite systems. "IEEE open journal of the Communications Society", 2024, vol. 5, p. 712-729.; http://hdl.handle.net/2117/400262

الاتاحة: http://hdl.handle.net/2117/400262
https://doi.org/10.1109/OJCOMS.2023.3341621

المؤلفون: MAHIN ZAEEM, Reza, MERLANO DUNCAN, Juan Carlos, HA, Vu Nguyen, MARTINEZ MARRERO, Liz, CHATZINOTAS, Symeon, OTTERSTEN, Björn

المصدر: urn:isbn:9798350393187 ; 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications, SPAWC 2024, 131-135 (2024-09-10); 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC), Lucca, Italy [IT], 10-09-2024 => 13-09-2024

مصطلحات موضوعية: Cell-free, Centralised, Centralized architecture, Clustering approach, Energy, Energy efficient, LEO networks, Low earth orbit satellites, Satellite communication networks, Satellite communications system, Engineering, computing & technology, Electrical & electronics engineering, Ingénierie, informatique & technologie, Ingénierie électrique & électronique

Relation: http://xplorestaging.ieee.org/ielx8/10693862/10693954/10694421.pdf?arnumber=10694421; Energy-Efficient Cell-Free Massive MIMO in Ultra-Dense LEO Networks: A Semi-Centralized Clustering Approach; FNR16352790 - Ground-based Distributed Beamforming Harmonization For The Integration Of Satellite And Terrestrial Networks., 2021 (01/06/2022-31/05/2025) - Juan Merlano Duncan; https://orbilu.uni.lu/handle/10993/62511; info:hdl:10993/62511; https://orbilu.uni.lu/bitstream/10993/62511/1/Energy_Efficiency_Optimization_in_Cell_Free_Massive_MIMO_for_Ultra_Dense_LEO_Satellite_Networks_with_Asynchronous_Transmissions%20%281%29.pdf

الاتاحة: https://orbilu.uni.lu/handle/10993/62511
https://orbilu.uni.lu/bitstream/10993/62511/1/Energy_Efficiency_Optimization_in_Cell_Free_Massive_MIMO_for_Ultra_Dense_LEO_Satellite_Networks_with_Asynchronous_Transmissions%20%281%29.pdf
https://doi.org/10.1109/SPAWC60668.2024.10694421

المؤلفون: Zaeem, Reza Mahin, Carlos Merlano Duncan, Juan, Ha, Vu Nguyen, Martinez Marrero, Liz, Chatzinotas, Symeon, Ottersten, Björn

المصدر: 2024 IEEE 25th International Workshop on Signal Processing Advances in Wireless Communications (SPAWC) ; page 131-135

الاتاحة: http://dx.doi.org/10.1109/spawc60668.2024.10694421
http://xplorestaging.ieee.org/ielx8/10693862/10693954/10694421.pdf?arnumber=10694421

المؤلفون: González-Rios, Jorge L., Martínez-Marrero, Liz, Lagunas, Eva, Krivochiza, Jevgenij, Garcés-Socarrás, Luis M., Palisetty, Rakesh, Duncan, Juan M., Chatzinotas, Symeon

المساهمون: European Space Agency

المصدر: 2024 IEEE Wireless Communications and Networking Conference (WCNC)

الاتاحة: http://dx.doi.org/10.1109/wcnc57260.2024.10570931
http://xplorestaging.ieee.org/ielx8/10570463/10570502/10570931.pdf?arnumber=10570931

المؤلفون: MARTINEZ MARRERO, Liz, MERLANO DUNCAN, Juan Carlos, QUEROL, Jorge, KUMAR, Sumit, KRIVOCHIZA, Jevgenij, SHARMA, Shree Krishna, CHATZINOTAS, Symeon, Camps, Adriano, OTTERSTEN, Björn

المساهمون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM - Signal Processing & Communications

المصدر: IEEE Access, 10, 45375-45409 (2022-04-22)

مصطلحات موضوعية: synchronization, distributed satellite systems, distributed beamforming, emote sensing, satellite communications, Engineering, computing & technology, Aerospace & aeronautics engineering, Electrical & electronics engineering, Ingénierie, informatique & technologie, Ingénierie aérospatiale, Ingénierie électrique & électronique

Relation: https://ieeexplore.ieee.org/document/9761868; FNR11689919 - Cognitive Cohesive Networks Of Distributed Units For Active And Passive Space Applications, 2017 (01/03/2018-31/08/2021) - Juan Merlano Duncan; urn:issn:2169-3536; https://orbilu.uni.lu/handle/10993/53760; info:hdl:10993/53760; wos:000790750600001

الاتاحة: https://orbilu.uni.lu/handle/10993/53760
https://orbilu.uni.lu/bitstream/10993/53760/1/Marrero%20et%20al.%20-%202022%20-%20Architectures%20and%20Synchronization%20Techniques%20for%20Distributed%20Satellite%20Systems%20A%20Survey.pdf
https://doi.org/10.1109/ACCESS.2022.3169499

المؤلفون: Martinez Marrero, Liz, Haqiqatnejad, Alireza, Merlano Duncan, Juan Carlos, Chatzinotas, Symeon, Ottersten, Björn

المساهمون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM - Signal Processing & Communications

المصدر: IEEE Open Journal of Vehicular Technology (2022-11-14)

مصطلحات موضوعية: linear precoding, multiuser-MISO precoding, phase uncertainties, satellite communication system, symbol level precoding, synchronization, system performance, Engineering, computing & technology, Electrical & electronics engineering, Aerospace & aeronautics engineering, Ingénierie, informatique & technologie, Ingénierie électrique & électronique, Ingénierie aérospatiale

Relation: https://ieeexplore.ieee.org/document/9947210; FNR11689919 - Cognitive Cohesive Networks Of Distributed Units For Active And Passive Space Applications, 2017 (01/03/2018-31/08/2021) - Juan Merlano Duncan; urn:issn:2644-1330; https://orbilu.uni.lu/handle/10993/53761; info:hdl:10993/53761; wos:000899243500002

الاتاحة: https://orbilu.uni.lu/handle/10993/53761
https://orbilu.uni.lu/bitstream/10993/53761/1/Multiuser-MISO_Precoding_under_Channel_Phase_Uncertainty_in_Satellite_Communication_Systems.pdf
https://doi.org/10.1109/OJVT.2022.3221841

المؤلفون: Querol, Jorge, Merlano Duncan, Juan Carlos, Martinez Marrero, Liz, Krivochiza, Jevgenij, Kumar, Sumit, Maturo, Nicola, Camps, Adriano, Chatzinotas, Symeon, Ottersten, Björn

المساهمون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM

المصدر: 2021 International Geoscience and Remote Sensing Symposium (IGARSS), from 10-07-2021 to 15-07-2021

مصطلحات موضوعية: Engineering, computing & technology, Electrical & electronics engineering, Ingénierie, informatique & technologie, Ingénierie électrique & électronique

Relation: FNR11689919 - Cognitive Cohesive Networks Of Distributed Units For Active And Passive Space Applications, 2017 (01/03/2018-31/08/2021) - Juan Merlano Duncan; https://orbilu.uni.lu/handle/10993/48050; info:hdl:10993/48050; https://orbilu.uni.lu/bitstream/10993/48050/1/2021_IGARSS_V2.2.pdf

الاتاحة: https://orbilu.uni.lu/handle/10993/48050
https://orbilu.uni.lu/bitstream/10993/48050/1/2021_IGARSS_V2.2.pdf

المؤلفون: Martínez Marrero, Liz, Merlano-Duncan, Juan Carlos, Querol Borràs, Jorge, Chatzinotas, Simeon, Camps Carmona, Adriano José, Ottersten, Bjorn

المساهمون: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció

مصطلحات موضوعية: Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços, Artificial satellites in telecommunication, PLL design, Phase tracking, DVB-S2X standard, Phase noise, Satellite precoding, CSI estimation, Satèl·lits artificials en telecomunicació

وصف الملف: 7 p.; application/pdf

Relation: https://ieeexplore.ieee.org/document/9500634; Martínez-Marrero, L. [et al.]. A design strategy for phase synchronization in precoding-enabled DVB-S2X user terminals. A: IEEE International Conference on Communications. "ICC 2021, IEEE International Conference on Communications: Virtual Conference, 14-23 June 2021: proceedings". Institute of Electrical and Electronics Engineers (IEEE), 2021, p. 1-7. ISBN 978-1-7281-7122-7. DOI 10.1109/ICC42927.2021.9500634.; http://hdl.handle.net/2117/359588

الاتاحة: http://hdl.handle.net/2117/359588
https://doi.org/10.1109/ICC42927.2021.9500634

المؤلفون: Querol Borràs, Jorge, Merlano-Duncan, Juan Carlos, Martínez Marrero, Liz, Krivochiza, Jevgenij, Kumar, Sumit, Maturo, Nicola, Camps Carmona, Adriano José, Chatzinotas, Symeon, Ottersten, Björn

المساهمون: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció

مصطلحات موضوعية: Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Satèl·lits i ràdioenllaços, Remote sensing, Antenna arrays, Beamforming, Synchronization, Multi-static remote sensing systems, Distributed beamforming, Software defined radio, Teledetecció, Agrupacions d'antenes

وصف الملف: 4 p.; application/pdf

Relation: https://ieeexplore.ieee.org/document/9554042; Querol, J. [et al.]. A Cubesat-ready phase synchronization digital payload for coherent distributed remote sensing missions. A: IEEE International Geoscience and Remote Sensing Symposium. "IGARSS 2021, 2021 IEEE International Geoscience and Remote Sensing Symposium: 12-16 July, 2021, virtual symposium, Brussels, Belgium: proceedings". Institute of Electrical and Electronics Engineers (IEEE), 2021, p. 7888-7891. ISBN 978-1-6654-0369-6. DOI 10.1109/IGARSS47720.2021.9554042.; http://hdl.handle.net/2117/366577

الاتاحة: http://hdl.handle.net/2117/366577
https://doi.org/10.1109/IGARSS47720.2021.9554042

المؤلفون: Merlano-Duncan, Juan Carlos, Querol Borràs, Jorge, Martínez Marrero, Liz, Krivochiza, Jevgenij, Camps Carmona, Adriano José, Chatzinotas, Simeon, Ottersten, Bjorn

المساهمون: Universitat Politècnica de Catalunya. Departament de Teoria del Senyal i Comunicacions, Universitat Politècnica de Catalunya. RSLAB - Grup de Recerca en Teledetecció

مصطلحات موضوعية: Àrees temàtiques de la UPC::Enginyeria de la telecomunicació::Radiocomunicació i exploració electromagnètica::Teledetecció, Remote sensing, Signal processing, Synchronization, Multi-static remote sensing systems, Distributed beamforming, SDR implementation, Teledetecció, Tractament del senyal

وصف الملف: 4 p.; application/pdf

Relation: https://ieeexplore.ieee.org/document/9324220; Merlano-Duncan, J.C. [et al.]. SDR implementation of a testbed for synchronization of coherent distributed remote sensing systems. A: IEEE International Geoscience and Remote Sensing Symposium. "IGARSS 2020: 2020 IEEE International Geoscience and Remote Sensing Symposium Proceedings: September 26 - October 2, 2020: virtual symposium". Institute of Electrical and Electronics Engineers (IEEE), 2020, p. 6588-6591. ISBN 978-1-7281-6374-1. DOI 10.1109/IGARSS39084.2020.9324220.; http://hdl.handle.net/2117/359093

الاتاحة: http://hdl.handle.net/2117/359093
https://doi.org/10.1109/IGARSS39084.2020.9324220

المؤلفون: MERLANO DUNCAN, Juan Carlos, MARTINEZ MARRERO, Liz, QUEROL, Jorge, KUMAR, Sumit, Camps, Adriano, CHATZINOTAS, Symeon, OTTERSTEN, Björn

المساهمون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM

المصدر: IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 14, 1909-1922 (2021)

مصطلحات موضوعية: Synchronization, Distributed beamforming, multi-statatic remote sensing, Engineering, computing & technology, Electrical & electronics engineering, Ingénierie, informatique & technologie, Ingénierie électrique & électronique

Relation: http://ieeexplore.ieee.org//document/9305688; FNR11689919 - Cognitive Cohesive Networks Of Distributed Units For Active And Passive Space Applications, 2017 (01/03/2018-31/08/2021) - Juan Merlano Duncan; urn:issn:1939-1404; urn:issn:2151-1535; https://orbilu.uni.lu/handle/10993/45428; info:hdl:10993/45428; https://orbilu.uni.lu/bitstream/10993/45428/1/JSTARS_Special_Issue_IGARSS19_ReviewNov_20_2020.pdf; wos:000613557400006

الاتاحة: https://orbilu.uni.lu/handle/10993/45428
https://orbilu.uni.lu/bitstream/10993/45428/1/JSTARS_Special_Issue_IGARSS19_ReviewNov_20_2020.pdf
https://doi.org/10.1109/JSTARS.2020.3046776

المؤلفون: KRIVOCHIZA, Jevgenij, MERLANO DUNCAN, Juan Carlos, QUEROL, Jorge, MATURO, Nicola, MARTINEZ MARRERO, Liz, Andrenacci, Stefano, Krause, Jens

المساهمون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM

المصدر: IEEE Access (2021-03-06)

مصطلحات موضوعية: Satellite communication, Satellite ground station, MU-MISO, Precoding, Interference cancellation, Engineering, computing & technology, Electrical & electronics engineering, Ingénierie, informatique & technologie, Ingénierie électrique & électronique

Relation: FNR11689919 - Cognitive Cohesive Networks Of Distributed Units For Active And Passive Space Applications, 2017 (01/03/2018-31/08/2021) - Juan Merlano Duncan; urn:issn:2169-3536; https://orbilu.uni.lu/handle/10993/46728; info:hdl:10993/46728

الاتاحة: https://orbilu.uni.lu/handle/10993/46728
https://orbilu.uni.lu/bitstream/10993/46728/1/Access-2021-02020_Proof_hi.pdf
https://doi.org/10.1109/ACCESS.2021.3064980

المؤلفون: Martinez Marrero, Liz, Merlano Duncan, Juan Carlos, Querol, Jorge, Chatzinotas, Symeon, Camps Carmona, Adriano J., Ottersten, Björn

المساهمون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM

المصدر: 37th International Communications Satellite Systems Conference (ICSSC2019), Okinawa, Japan [JP], from 29-10-2019 to 01-11-2019

مصطلحات موضوعية: PHASE NOISE, OSCILLATOR MODEL, LINEAR PRECODING, SYSTEM PERFORMANCE, Engineering, computing & technology, Aerospace & aeronautics engineering, Ingénierie, informatique & technologie, Ingénierie aérospatiale

Relation: FNR11689919 - Cognitive Cohesive Networks Of Distributed Units For Active And Passive Space Applications, 2017 (01/03/2018-31/08/2021) - Juan Merlano Duncan; https://orbilu.uni.lu/handle/10993/40625; info:hdl:10993/40625; https://orbilu.uni.lu/bitstream/10993/40625/1/EFFECTS%20OF%20MULTIPLE%20OSCILLATOR%20PHASE%20NOISE%20IN%20PRECODING%20PERFORMANCE.pdf

الاتاحة: https://orbilu.uni.lu/handle/10993/40625
https://orbilu.uni.lu/bitstream/10993/40625/1/EFFECTS%20OF%20MULTIPLE%20OSCILLATOR%20PHASE%20NOISE%20IN%20PRECODING%20PERFORMANCE.pdf

المؤلفون: KISSELEFF, Steven, LAGUNAS, Eva, Krivochiza, Jevgenij, QUEROL, Jorge, Maturo, Nicola, MARTINEZ MARRERO, Liz, MERLANO DUNCAN, Juan Carlos, CHATZINOTAS, Symeon

المصدر: VTC2021-Fall Workshop on Evolution of Non-Terrestrial Networks Toward 6G, Sept. 2021 (2021); VTC2021-Fall Workshop on Evolution of Non-Terrestrial Networks Toward 6G, 27-09-2021

مصطلحات موضوعية: Engineering, computing & technology, Computer science, Ingénierie, informatique & technologie, Sciences informatiques

Relation: https://orbilu.uni.lu/handle/10993/48039; info:hdl:10993/48039; https://orbilu.uni.lu/bitstream/10993/48039/1/CGD_Paper_2021.pdf

الاتاحة: https://orbilu.uni.lu/handle/10993/48039
https://orbilu.uni.lu/bitstream/10993/48039/1/CGD_Paper_2021.pdf

المؤلفون: Martinez Marrero, Liz

المساهمون: Merlano Duncan, Juan Carlos, Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM - Signal Processing & Communications

مصطلحات موضوعية: Distributed Satellite Systems, Phase synchronization, Precoding, Beamforming, Local oscillator, Phase noise, PLL, Hardware implementation, Engineering, computing & technology, Aerospace & aeronautics engineering, Computer science, Electrical & electronics engineering, Ingénierie, informatique & technologie, Ingénierie aérospatiale, Sciences informatiques, Ingénierie électrique & électronique

وصف الملف: xxvi, 192

Relation: FNR11689919 - Cognitive Cohesive Networks Of Distributed Units For Active And Passive Space Applications, 2017 (01/03/2018-31/08/2021) - Juan Merlano Duncan; https://orbilu.uni.lu/handle/10993/56019; info:hdl:10993/56019; https://orbilu.uni.lu/bitstream/10993/56019/1/LizMartinezMarreroPhDThesis_finalVersion.pdf

الاتاحة: https://orbilu.uni.lu/handle/10993/56019
https://orbilu.uni.lu/bitstream/10993/56019/1/LizMartinezMarreroPhDThesis_finalVersion.pdf

المؤلفون: Martinez Marrero, Liz, Merlano Duncan, Juan Carlos, Querol, Jorge, Maturo, Nicola, Krivochiza, Jevgenij, Chatzinotas, Symeon, Ottersten, Björn

المساهمون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM - Signal Processing & Communications

المصدر: IEEE Wireless Communications and Networking Conference (WCNC), Austin, TX, United States [US], from 10-04-2022 to 13-04-2022

مصطلحات موضوعية: synchronization, differential phase compensation, precoding, satellite communication, over-the-air demonstration, Engineering, computing & technology, Electrical & electronics engineering, Aerospace & aeronautics engineering, Ingénierie, informatique & technologie, Ingénierie électrique & électronique, Ingénierie aérospatiale

Relation: This article presents a closed-loop differential phase compensation system for a precoding-enabled multibeam satellite forward link and its validation by live experiments on a GEO satellite scenario. The precoding operation avoids inter-beam interference and maximizes the spectrum efficiency by full frequency reuse as an alternative to the traditional two-color or four-color reuse methods proposed in the DVB-S2 standard. However, the satellite payload introduces differential phase and frequency impairments, which can degrade the precoding performance. This work describes the implementation of the differential phase and frequency tracking and compensation loop in an end-to-end testbed over a multibeam satellite system with independent local oscillators. The developed system performs end-to-end real-time communication over the satellite link, including channel measurements and precompensation. Results are validated by an over-the-air demonstration using two beams of the SES-14 multibeam satellite. Each beam is transmitted by independent transponders, which results in differential frequency and phase offsets due to the transponder undisciplined local oscillators. This phase offset makes it impossible to use precoding without the phase compensation loop. We prove that the implemented system can successfully track and compensate the differential phase and frequency to improve precoding performance.; https://ieeexplore.ieee.org/document/9771918; FNR11689919 - Cognitive Cohesive Networks Of Distributed Units For Active And Passive Space Applications, 2017 (01/03/2018-31/08/2021) - Juan Merlano Duncan; https://orbilu.uni.lu/handle/10993/53080; info:hdl:10993/53080

الاتاحة: https://orbilu.uni.lu/handle/10993/53080
https://doi.org/10.1109/WCNC51071.2022.9771918

المؤلفون: Merlano Duncan, Juan Carlos, Querol, Jorge, Maturo, Nicola, Krivochiza, Jevgenij, Spano, Danilo, Norshahida, Saba, Martinez Marrero, Liz, Chatzinotas, Symeon, Ottersten, Björn

المساهمون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM

المصدر: Proceedings of the 37th International Communications Satellite Systems Conference (2019-11-01); 37th International Communications Satellite Systems Conference (ICSSC2019), Okinawa, Japan [JP], from 29-10-2019 to 01-11-2019

مصطلحات موضوعية: Precoding, Interference Mitigation, SATCOM, MIMO, Engineering, computing & technology, Electrical & electronics engineering, Ingénierie, informatique & technologie, Ingénierie électrique & électronique

Relation: FNR11689919 - Cognitive Cohesive Networks Of Distributed Units For Active And Passive Space Applications, 2017 (01/03/2018-31/08/2021) - Juan Merlano Duncan; https://orbilu.uni.lu/handle/10993/41695; info:hdl:10993/41695; https://orbilu.uni.lu/bitstream/10993/41695/1/ICSSC_2019.pdf

الاتاحة: https://orbilu.uni.lu/handle/10993/41695
https://orbilu.uni.lu/bitstream/10993/41695/1/ICSSC_2019.pdf

المؤلفون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM - Signal Processing & Communications [research center], European Space Agency - ESA [sponsor], SES S.A. [sponsor], Fonds National de la Recherche - FnR [sponsor], Martinez Marrero, Liz, Merlano Duncan, Juan Carlos, Querol, Jorge, Maturo, Nicola, Krivochiza, Jevgenij, Chatzinotas, Symeon, Ottersten, Björn

مصطلحات الفهرس: synchronization, differential phase compensation, precoding, satellite communication, over-the-air demonstration, info:eu-repo/semantics/conferencePaper

URL: https://ieeexplore.ieee.org/document/9771918
http://orbilu.uni.lu/handle/10993/53080
http://orbilu.uni.lu/bitstream/10993/53080/1/WCNC2022_final_reviewed.pdf
References This article presents a closed-loop differential phase compensation system for a precoding-enabled multibeam satellite forward link and its validation by live experiments on a GEO satellite scenario. The precoding operation avoids inter-beam interference and maximizes the spectrum efficiency by full frequency reuse as an alternative to the traditional two-color or four-color reuse methods proposed in the DVB-S2 standard. However, the satellite payload introduces differential phase and frequency impairments, which can degrade the precoding performance. This work describes the implementation of the differential phase and frequency tracking and compensation loop in an end-to-end testbed over a multibeam satellite system with independent local oscillators. The developed system performs end-to-end real-time communication over the satellite link, including channel measurements and precompensation. Results are validated by an over-the-air demonstration using two beams of the SES-14 multibeam satellite. Each beam is transmitted by independent transponders, which results in differential frequency and phase offsets due to the transponder undisciplined local oscillators. This phase offset makes it impossible to use precoding without the phase compensation loop. We prove that the implemented system can successfully track and compensate the differential phase and frequency to improve precoding performance.

المؤلفون: Interdisciplinary Centre for Security, Reliability and Trust (SnT) > SIGCOM - Signal Processing & Communications [research center], Fonds National de la Recherche - FnR [sponsor], Martinez Marrero, Liz, Merlano Duncan, Juan Carlos, Querol, Jorge, Kumar, Sumit, Krivochiza, Jevgenij, Sharma, Shree Krishna, Chatzinotas, Symeon, Camps, Adriano, Ottersten, Björn

مصطلحات الفهرس: synchronization, distributed satellite systems, distributed beamforming, emote sensing, satellite communications, info:eu-repo/semantics/article

URL: https://ieeexplore.ieee.org/document/9761868
http://orbilu.uni.lu/handle/10993/53760
http://orbilu.uni.lu/bitstream/10993/53760/1/Marrero%20et%20al.%20-%202022%20-%20Architectures%20and%20Synchronization%20Techniques%20for%20Distributed%20Satellite%20Systems%20A%20Survey.pdf