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Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019)最新文献

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Integrated space-enabled hybrid 5G-V2X communications link modeling 综合空间混合5G-V2X通信链路建模
S. Udeshi, M. Uko, M. Zafar, A. Altaf, B. Adebisi, S. Ekpo
Vehicle-to-everything (V2X) communication is the next innovative technology to transform the automotive industry. It implements the power of Internet of things (IoTs) connectivity and processing to improve the efficiency, performance, and safety of future vehicles. V2X enables vehicles to have a high awareness of the surrounding environmental factors, infrastructures, and other vehicles through the advanced sensing and communication technologies in place. Current communication platforms in place are not able to fully support the transmission of high priority safety critical data required to provide these services. Individually, the two main V2X architectures (DSRC and C-V2X) have limitations which inhibit them from fully supporting the V2X platform. As such, this chapter proposes the integration of 5G technology, which supports all types of communication technologies through the integration of reconfigurable devices and offers higher data rates and bandwidths than any preceding platform. The architecture proposed in the chapter is composed of three layers: DSR V2X for direct short-range communication; cellular V2X layer which will combine 5G cellular platform to provide backup communication when DSR V2X layer fails and multimedia capabilities; and satellite (SAT)-V2X which provides extra backhaul connectivity when both DSR and cellular V2X is unavailable. The system design, modeling, and simulation results yield a more reliable and sustainable V2X capacity for critical real-time vehicular communication applications.
车联网(V2X)通信是改变汽车行业的下一个创新技术。它实现了物联网(iot)连接和处理的力量,以提高未来车辆的效率、性能和安全性。V2X通过先进的传感和通信技术,使车辆能够高度了解周围的环境因素、基础设施和其他车辆。现有的通信平台无法完全支持提供这些服务所需的高优先级安全关键数据的传输。单独来看,两种主要的V2X架构(DSRC和C-V2X)都有局限性,无法完全支持V2X平台。因此,本章提出了5G技术的集成,该技术通过集成可重构设备支持所有类型的通信技术,并提供比以往任何平台更高的数据速率和带宽。本章提出的架构由三层组成:用于直接短距离通信的DSR V2X;蜂窝V2X层,结合5G蜂窝平台,提供DSR V2X层故障时的备份通信和多媒体功能;卫星(SAT)-V2X,在DSR和蜂窝V2X都不可用时提供额外的回程连接。系统设计、建模和仿真结果为关键的实时车辆通信应用提供了更可靠和可持续的V2X能力。
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引用次数: 0
Energy-efficient user terminals for Internet of things applications over satellite 面向卫星物联网应用的高能效用户终端
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引用次数: 1
Direction of Satcom R&D in Japan: WINDS, ETS-IX, and beyond 日本卫星通信研发方向:WINDS、ETS-IX等
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引用次数: 0
Evolution of Ka-band on-the-move terminals for land and maritime broadband communications 陆地和海上宽带通信ka波段移动终端的发展
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引用次数: 0
Research and development of an optical ground station supporting both GEO- and LEO-to-ground links 研究和发展支持地球静止轨道和近地轨道对地链路的光学地面站
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引用次数: 0
Secret key agreement for satellite laser communications 卫星激光通信密匙协议
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引用次数: 2
Effects of channel phase in multibeam multicast satellite precoding systems 多波束多播卫星预编码系统中信道相位的影响
X. Artiga, M. Vázquez
This paper revisits the impact of channel phase in multibeam multicast satellite precoding. First, we analyze the unicast case showing that the phase components relative to the different slant paths to each user do not affect the precoding performance. Then, we indicate that for the multicast transmission, the mentioned phase effect may have impact depending on the employed clustering technique. Finally, we propose an alternative clustering solution based on normalizing out the phase components relative to the different slant paths. According to our simulation results, this novel clustering technique provides robustness to these phase components and also behaves better than previously reported clustering schemes.
研究了信道相位对多波束多播卫星预编码的影响。首先,我们分析了单播情况,表明相对于每个用户的不同倾斜路径的相位分量不会影响预编码性能。然后,我们指出,对于组播传输,上述相位效应可能会产生影响,这取决于所采用的聚类技术。最后,我们提出了一种基于相对于不同倾斜路径的相位分量归一化的替代聚类解决方案。仿真结果表明,该聚类方法对相位分量具有鲁棒性,且性能优于以往的聚类方法。
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引用次数: 3
Adaptive coding and modulation (ACM) and power control scheme for return link of DVB-RCS2 satellite system DVB-RCS2卫星系统返回链路的自适应编码调制(ACM)和功率控制方案
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引用次数: 0
Calibration method for array antenna considering mutual coupling in mobile satellite communications 移动卫星通信中考虑互耦的阵列天线标定方法
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引用次数: 0
Rising above the cloud: toward high-rate delay-tolerant networking in low earth orbit 从云端升起:迈向低地球轨道上的高速率容错网络
Alan Hylton, D. Raible, G. Clark, R. Dudukovich, Brian J. Tomko, Laura, Burk
The High Data Rate Architecture (HiDRA) project is implementing a High-rate Delay Tolerant Networking (HDTN) capability that can support Low Earth Orbit (LEO) applications and environments. The present state of the effort, future work, and other elements of the work to date are described in this paper. This implementation is intended to support applications that run at 1+ Gbps, per the requirements of modern optical and high-frequency RF links. Uniquely, this implementation is also tuned to support relay and data trunking applications, which might require support for large numbers of small bundles per second. The design for this platform is based entirely on commercial-off-the-shelf (COTS) components, and possesses buffering capabilities in the 5 TB range. This document takes results from previous individual tests and integrates them to demonstrate results in the presence of a coherent use-case: consider a network aboard the ISS which intends to utilize an upcoming optical communications capability. For this use-case, orbital analysis software is used to analyze orbital dynamics, from which a list of access times are generated that might take in to account weather, schedule competition, etc. A variant of Contact Graph Routing (CGR) is applied to these windows to determine an optimal schedule. This schedule is then loaded into the HDTN prototype and, in conjunction with various measurement tools, a complete end-to-end analysis of HDTN’s performance is conducted. Various bottlenecks (including storage) are identified: these bottlenecks are expected to help us focus our future work on the elements of the system that are most likely to present issues moving forward. Finally, we discuss possible paths for evolution beyond the present rates supported by the system, including (but not limited to) hardware acceleration.
高数据速率架构(HiDRA)项目正在实施一种高速率容延迟网络(HDTN)能力,可以支持低地球轨道(LEO)应用和环境。本文描述了目前的工作状态、未来的工作以及迄今为止工作的其他要素。该实现旨在支持运行速度为1+ Gbps的应用,符合现代光学和高频射频链路的要求。独特的是,此实现还经过调优以支持中继和数据集群应用程序,这可能需要支持每秒大量的小包。该平台的设计完全基于商用现货(COTS)组件,并具有5tb范围的缓冲能力。本文档从以前的单个测试中获取结果,并将它们集成在一起,以在一个连贯的用例中演示结果:考虑国际空间站上的一个网络,该网络打算利用即将到来的光通信能力。对于这个用例,轨道分析软件用于分析轨道动力学,从中生成一个访问时间列表,该列表可能会考虑天气、赛程竞争等因素。将接触图路由(CGR)的一种变体应用于这些窗口以确定最优调度。然后将此时间表加载到HDTN原型中,并结合各种测量工具,对HDTN的性能进行完整的端到端分析。确定了各种瓶颈(包括存储):预计这些瓶颈将帮助我们将未来的工作重点放在最有可能出现问题的系统元素上。最后,我们讨论了超越当前系统支持速率的可能进化路径,包括(但不限于)硬件加速。
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引用次数: 8
期刊
Advances in Communications Satellite Systems: Proceedings of the 37th International Communications Satellite Systems Conference (ICSSC-2019)
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