Carrier synchronization in distributed MIMO satellite links

Savazzi, Pietro; Vizziello, Anna

doi:10.1109/wisee.2015.7392990

Cited by 9 publications

(5 citation statements)

References 14 publications

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“…Most synchronization algorithms reported in the literature for distributed MIMO systems rely on inter-satellite links [9]- [11]. However, this approach is not feasible in multibeam satellite systems.…”

Section: Introductionmentioning

confidence: 99%

Accurate Phase Synchronization for Precoding-Enabled GEO Multibeam Satellite Systems

Marrero,

Duncan,

González

et al. 2024

IEEE Open J. Commun. Soc.

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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 deployed multibeam satellites. This article addresses the required phase synchronization to enable precoding techniques in multibeam satellite systems. It contains the detailed design of a frequency and phase compensation loop based on the proportionalintegral controller, which deals with the phase drift introduced by the hardware components. Specifically, the phase noise of the local oscillators used for up and down conversion at each system element (gateway, satellite, and user terminals). The implementation of the two-state phase noise model used to emulate this phase drift is included in the article. Besides, a comparative analysis of several methods to combine the frequency and phase measurements obtained from the user terminals is also included. Finally, the performance of the proposed closed-loop synchronization method is validated through simulations using our in-house developed MIMO end-to-end satellite emulator based on SDR platforms.

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Section: Introductionmentioning

confidence: 99%

Accurate Phase Synchronization for Precoding-Enabled GEO Multibeam Satellite Systems

Marrero,

Duncan,

González

et al. 2024

IEEE Open J. Commun. Soc.

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“…For example, deep space communications could be accomplished by DSSs applying distributed multiple-input and multiple-output (MIMO) techniques [3] if the terminals at each end of the link are synchronized at symbol level. This implies that the stations need to maintain synchronized clocks with sub-nanosecond accuracy to guarantee a bandwidth of a few hundred MHz [4].…”

Section: Introductionmentioning

confidence: 99%

Architectures and Synchronization Techniques for Distributed Satellite Systems: A Survey

et al. 2022

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Cohesive Distributed Satellite Systems (CDSSs) is a key enabling technology for the future of remote sensing and communication missions. However, they have to meet strict synchronization requirements before their use is generalized. When clock or local oscillator signals are generated locally at each of the distributed nodes, achieving exact synchronization in absolute phase, frequency, and time is a complex problem. In addition, satellite systems have significant resource constraints, especially for small satellites, which are envisioned to be part of the future CDSSs. Thus, the development of precise, robust, and resource-efficient synchronization techniques is essential for the advancement of future CDSSs. In this context, this survey aims to summarize and categorize the most relevant results on synchronization techniques for Distributed Satellite Systems (DSSs). First, some important architecture and system concepts are defined. Then, the synchronization methods reported in the literature are reviewed and categorized. This article also provides an extensive list of applications and examples of synchronization techniques for DSSs in addition to the most significant advances in other operations closely related to synchronization, such as inter-satellite ranging and relative position. The survey also provides a discussion on emerging data-driven synchronization techniques based on Machine Learning (ML). Finally, a compilation of current research activities and potential research topics is proposed, identifying problems and open challenges that can be useful for researchers in the field.

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“…For example, deep space communications could be accomplished by DSS applying distributed MIMO techniques [3] if the terminals at each end of the link are synchronized VOLUME 4, 2016 at symbol level. This implies that the stations need to maintain synchronized clocks with sub-nanosecond accuracy to guarantee a bandwidth of a few hundred MHz [4].…”

Section: Introductionmentioning

confidence: 99%

Architectures and Synchronization Techniques for Distributed Satellite Systems: A Survey

Marrero¹,

Duncan²,

Querol³

et al. 2022

Preprint

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CDSS is a key enabling technology for the future of remote sensing and communication missions. However, they have to meet strict synchronization requirements before their use is generalized. When clock or local oscillator signals are generated locally at each of the distributed nodes, achieving exact synchronization in absolute phase, frequency, and time is a complex problem. In addition, satellite systems have significant resource constraints, especially for small satellites, which are envisioned to be part of the future CDSS. Thus, the development of precise, robust, and resource-efficient synchronization techniques is essential for the advancement of future CDSS. In this context, this survey aims to summarize and categorize the most relevant results on synchronization techniques for DSS. First, some important architecture and system concepts are defined. Then, the synchronization methods reported in the literature are reviewed and categorized. This article also provides an extensive list of applications and examples of synchronization techniques for DSS in addition to the most significant advances in other operations closely related to synchronization, such as inter-satellite ranging and relative position. The survey also provides a discussion on emerging data-driven synchronization techniques based on ML. Finally, a compilation of current research activities and potential research topics is proposed, identifying problems and open challenges that can be useful for researchers in the field.

show abstract

Carrier synchronization in distributed MIMO satellite links

Cited by 9 publications

References 14 publications

Accurate Phase Synchronization for Precoding-Enabled GEO Multibeam Satellite Systems

Accurate Phase Synchronization for Precoding-Enabled GEO Multibeam Satellite Systems

Architectures and Synchronization Techniques for Distributed Satellite Systems: A Survey

Architectures and Synchronization Techniques for Distributed Satellite Systems: A Survey

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