Accurate Phase Synchronization for Precoding-Enabled GEO Multibeam Satellite Systems

Autor: Liz Martinez Marrero, Juan Carlos Merlano Duncan, Jorge Luis Gonzalez, Jevgenij Krivochiza, Symeon Chatzinotas, Bjorn Ottersten, Adriano Camps

Publikováno v: IEEE Open Journal of the Communications Society, Vol 5, Pp 712-729 (2024)

Synchronizing the local oscillators in multibeam satellites with the objective of coherent communications is still an open challenge. It has to be addressed to implement full-frequency reuse approaches, such as precoding techniques using the already

Externí odkaz: https://doaj.org/article/891c5fd5479e402ba5d6bd4e3203dae5

Multiuser-MISO Precoding Under Channel Phase Uncertainty in Satellite Communication Systems

Autor: Liz Martinez Marrero, Alireza Haqiqatnejad, Juan C. Merlano Duncan, Symeon Chatzinotas, Bjorn Ottersten

Publikováno v: IEEE Open Journal of Vehicular Technology, Vol 4, Pp 127-148 (2023)

Linear and symbol-level precoding in satellite communications have received increasing research attention thanks to their ability to tackle inter-beam interference, allowing the use of spectral resources more efficiently. However, there are still cha

Externí odkaz: https://doaj.org/article/a979fee07d4b4c22a27cb849137b764f

Differential Phase Compensation in Over-the-air Precoding Test-bed for a Multi-beam Satellite

Autor: Liz Martinez Marrero, Juan Duncan, Jorge Querol, Nicola Maturo, Jevgenij Krivochiza, Symeon Chatzinotas, Bjorn Ottersten

Publikováno v: 2022 IEEE Wireless Communications and Networking Conference (WCNC).

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::191d290359589b9c0787e333147dcb9c
https://doi.org/10.1109/wcnc51071.2022.9771918

A Remote Carrier Synchronization Technique for Coherent Distributed Remote Sensing Systems

Autor: Adriano Camps, Liz Martinez-Marrero, Bjorn Ottersten, Symeon Chatzinotas, Sumit Kumar, Jorge Querol, J. C. Merlano-Duncan

Publikováno v: UPCommons. Portal del coneixement obert de la UPC
Universitat Politècnica de Catalunya (UPC)
IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, Vol 14, Pp 1909-1922 (2021)

Phase, frequency, and time synchronization are crucial requirements for many applications, such as multistatic remote sensing and communication systems. Moreover, the synchronization solution becomes even more challenging when the nodes are orbiting

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::be2723bb34a70d65755e39c031de80cd
http://orbilu.uni.lu/handle/10993/45428

End-to-end Precoding Validation over a Live GEO Satellite Forward Link

Autor: Symeon Chatzinotas, Juan Carlos Merlano Duncan, Jens Krause, Stefano Andrenacci, Nicola Maturo, Jevgenij Krivochiza, Liz Martinez Marrero, Jorge Querol

In this paper we demonstrate end-to-end precoded multi-user multiple-input single-output (MU-MISO) communications over a live GEO satellite link. Precoded communications enable full frequency reuse (FFR) schemes in satellite communications (SATCOM) t

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b037e30a8c120575e18a1d18fa8a710c