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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 ( IF 1.7 ) Pub Date : 2020-09-15 , DOI: 10.1002/sat.1372
Alberto Mengali 1 , Charilaos I. Kourogiorgas 2 , Nikolaos K. Lyras 2 , Bhavani Shankar Mysore Rama Rao 1 , Farbod Kayhan 1 , Athanasios D. Panagopoulos 2 , Thomas Bäumer 3 , Konstantinos Liolis 3
Affiliation  

This paper studies the use of optical feeder links in very high throughput satellites (VHTS) networks with emphasis on gateway diversity techniques to mitigate the inherent propagation losses in optical frequencies. Focusing on a GEO scenario, the paper considers a system-wide approach investigating various challenges of optical feeder links. These include transmission schemes amenable for transparent on-board processing, optical channel models taking into account blockage by clouds and fading caused by atmospheric turbulence in addition to complexity of on-board and on-ground processing. The channel models are then used to dimension the ground segment towards ensuring a given availability percentage (e.g., 99.9%). The channel model and payload complexity further influence the choice of link layer techniques used for counteracting fading due to atmospheric turbulence in the absence of blockage. An elaborate end-to-end simulator incorporating the proposed channel models capturing the nuances of various processing blocks like optical-electrical conversion is developed. The system performance results provide interesting insights and a framework for assessing the feasibility and advantages of optical feeder links in VHTS systems.

中文翻译:

用于超高吞吐量卫星网络的地对地光馈线链路:强调分集技术

本文研究了超高吞吐量卫星 (VHTS) 网络中光馈线链路的使用,重点是网关分集技术,以减轻光频率中的固有传播损耗。本文以 GEO 场景为重点,考虑了一种系统范围的方法来研究光纤馈线链路的各种挑战。这些包括适用于透明机载处理的传输方案,除了机载和地面处理的复杂性之外,还考虑了云的阻塞和大气湍流引起的衰落的光通道模型。然后使用信道模型来确定地面段的尺寸以确保给定的可用性百分比(例如,99.9%)。信道模型和有效载荷的复杂性进一步影响了链路层技术的选择,这些技术用于在没有阻塞的情况下抵消由于大气湍流引起的衰落。开发了一个精心设计的端到端模拟器,该模拟器结合了所提出的通道模型,用于捕捉各种处理模块(如光电转换)的细微差别。系统性能结果为评估 VHTS 系统中光馈线链路的可行性和优势提供了有趣的见解和框架。
更新日期:2020-09-15
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