Documents
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10 Gigabit White Rabbit: Sub-Nanosecond Timing and Data Distribution
Authors: Miguel Jiménez-López; Francisco Girela-López; Jose López-Jiménez; Emilio Marín-López; Rafael Rodríguez; Javier Díaz Abstract: Time synchronization is a critical feature for many scientific facilities and industrial infrastructures. The required performance is progressively increasing everyday, for instance, few tens of nanoseconds for Fifth Generation (5G) networks or sub-nanosecond accuracy on next family of particle accelerators and…
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High Accuracy Synchronization for Distributed Massive MIMO using White Rabbit
Authors: Thomas Bigler, Albert Treytl, David Loschenbrand, Thomas Zemen Abstract: Accurate synchronization is a crucial prerequisite for wireless communication systems and in particular for spatially distributed massive multiple-input multiple-output (MIMO) systems which is also used in the upcoming 5G mobile communication standard. Many applications based on MIMO transmission, such as communication systems or beamforming methods,…
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RELIABILITY IN A WHITE RABBIT NETWORK
Autors: Maciej Lipinski, Javier Serrano, Tomasz Włostowski, CERN, Geneva, SwitzerlandCesar Prados, GSI, Darmstadt, Germany Abstract: White Rabbit (WR) is a time-deterministic, low-latency Ethernet-based network which enables transparent, subns accuracy timing distribution. It is being developed to replace the General Machine Timing (GMT) system currently used at CERN and will become the foundation for the control…
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Scalability Analysis of the White-Rabbit Technology for Cascade-Chain Networks
Authors: Felipe Torres-Gonzalez, Javier Dıaz, Emilio Marın-Lopez, Rafael Rodriguez-Gomez Abstract: Due to an increase of timing requirements in many actual and future applications, improvements are needed in current synchronization protocols. New scenarios as the Internet of Things or the next generation of 5G Mobile telecommunication networks, where a large number of devices must be interconnected,…
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Synchronization and Coexistence in Quantum Networks
Authors: Ivan A. Burenkov, Alexandra Semionov, Hala, Thomas Gerrits, Anouar Rahmouni, DJ Anand, Ya-Shian Li-Baboud, Oliver Slattery, Abdella Battou, and Sergey V. Polyakov Abstract: We investigate the coexistence of clock synchronization protocols with quantum signals in a common single-mode optical fiber. By measuring optical noise between 1500 nm to 1620 nm we demonstrate a potential for…
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Temperature Effect on White Rabbit Timing Link
Authors: Hongming Li, Guanghua Gong, Weibin Pan, Qiang Du, and Jianmin Li Abstract: White Rabbit (WR) technology combines gigabit Ethernet data transfer with synchronization at subnanosecond accuracy and picoseconds precision over the same fiber medium. In some applications, the WR link must maintain the synchronization accuracy over a wide temperature range. The temperature effect on…
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THE WHITE RABBIT PROJECT
Authors: J. Serrano, M. Cattin, E. Gousiou, E. van der Bij, T. Włostowski, CERN, Geneva, SwitzerlandG. Daniluk, AGH University of Science and Technology, Krakow, PolandM. Lipinski, Warsaw University of Technology, Warsaw, Poland Abstract: White Rabbit (WR) is a multi-laboratory, multicompany collaboration for the development of a new Ethernet-based technology which ensures sub-nanosecond synchronisation and deterministic…
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Using single wavelength light to improve the synchronization accuracy of the White Rabbit system
Authors:Xu Yuan Xu Yuan | Bo Wang Bo Wang Abstract: We demonstrate a new synchronization method for the White Rabbit system. Signals are transmitted in a single mode fiber in both directions with the same light wavelength. Without the complex calibration process of the fiber asymmetry parameter, the new method reduces the effect of chromatic…
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White Rabbit Absolute Calibration
Authors: Henk Peek, Peter Jansweijer Abstract: White Rabbit (WR) is a widely used implementation to create high accuracy time dissemination networks. Onsite network calibration can be avoided when using absolute calibrated components, which can be freely exchanged withoutrecalibration. Absolute calibration of high accuracy time dissemination network components enables independent developersand/or vendors to exchange their calibrated…
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White Rabbit Applications and Enhancements
Authors: M. Lipinski, E. van der Bij, J. Serrano, T. Włostowski, G. Daniluk, A. Wujek, M. Rizzi, D. Lampridis – CERN, Geneva, Switzerland Abstract: This article provides a non-exhaustive overview of applications and enhancements to the White Rabbit (WR) extension of the IEEE 1588 Precision Time Protocol (PTP). Initially developed to serve accelerators at the…