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LEO Satellite Communications with Massive MIMO [PDF]

ICC 2020 - 2020 IEEE International Conference on Communications (ICC), 2020
Low earth orbit (LEO) satellite communications are expected to be incorporated in future wireless networks to provide global wireless access with enhanced data rates. Massive multiple-input multiple-output (MIMO) techniques, though widely used in terrestrial communication systems, have not been applied to LEO satellite communication systems.
Li You 0001, Ke-Xin Li, Jiaheng Wang 0001, Xiqi Gao 0001, Xiang-Gen Xia 0001, Björn E. Ottersten   +5 more
openaire   +3 more sources

Multi-LEO Satellite Stereo Winds

Remote Sensing, 2023
The stereo-winds method follows trackable atmospheric cloud features from multiple viewing perspectives over multiple times, generally involving multiple satellite platforms. Multi-temporal observations provide information about the wind velocity and the observed parallax between viewing perspectives provides information about the height.
James L. Carr, Dong L. Wu, Mariel D. Friberg, Tyler C. Summers   +3 more
openaire   +3 more sources

Democratizing LEO Satellite Network Measurement

ACM SIGMETRICS Performance Evaluation Review, 2023
Low Earth Orbit (LEO) satellite networks are quickly gaining traction with promises of impressively low latency, high bandwidth, and global reach. However, the research community knows relatively little about their operation and performance in practice. The obscurity is largely due to the high barrier of entry for measuring LEO networks, which requires
Liz Izhikevich, Manda Tran, Katherine Izhikevich, Gautam Akiwate, Zakir Durumeric   +4 more
openaire   +3 more sources

Real-Time LEO Satellite Clocks Based on Near-Real-Time Clock Determination with Ultra-Short-Term Prediction

Remote Sensing
The utilization of Low Earth Orbit (LEO) satellites is anticipated to augment various aspects of traditional GNSS-based Positioning, Navigation, and Timing (PNT) services. While the LEO satellite orbital products can nowadays be produced with rather high
Meifang Wu, Kan Wang, Jinqian Wang, Jiawei Liu, Beixi Chen, Wei Xie, Zhe Zhang, Xuhai Yang   +7 more
doaj   +2 more sources

Effect of strong time-varying transmission distance on LEO satellite-terrestrial deliveries [PDF]

, 2022
In this paper, we investigate the effect of the strong time-varying transmission distance on the performance of the low-earth orbit (LEO) satellite-terrestrial transmission (STT) system.
Alouini, M -S., Mao, Y., Li, Tingting, Pan, G., Lv, Tiejun, Pan, Gaofeng, Li, T., Ma, Yuanyuan, Alouini, Mohamed-Slim, Lv, T., Chen, Yunfei   +10 more
core   +1 more source

Validation on Residual Variation and Covariance Matrix of USSTRATCOM Two Line Element [PDF]

Journal of Astronomy and Space Sciences, 2012
Satellite operating agencies are constantly monitoring conjunctions between satellites and space objects. Two line element (TLE) data, published by the Joint Space Operations Center of the United States Strategic Command, are available as raw data for a ...
Hyeonjeong Yim, Daewon Chung
doaj   +1 more source

Massive MIMO LEO Satellite Communications System

天地一体化信息网络, 2022
Extending massive multiple-input multiple-output (MIMO) technique to low earth orbit (LEO) satellite communication systems enables satellites to implement fl exible beamforming, which can make full use of the spatial degrees of freedom of massive MIMO ...
Kexin LI, Li YOU, Xiqi GAO
doaj   +2 more sources

An Adaptive Dynamic Channel Allocation Algorithm Based on a Temporal–Spatial Correlation Analysis for LEO Satellite Networks

Applied Sciences, 2022
Low Earth orbit (LEO) satellites that can be used as computing nodes are an important part of future communication networks. However, growing user demands, scarce channel resources and unstable satellite–ground links result in the challenge to design an ...
Juan Wang, Lijuan Sun, Jian Zhou, Chong Han   +3 more
doaj   +1 more source

On-Demand Routing in LEO Satellite Systems [PDF]

2007 IEEE International Conference on Communications, 2007
In this paper, a location-assisted on-demand routing (LAOR) protocol for low earth orbit (LEO) satellite systems is proposed and evaluated. This protocol can be viewed as a variant of the well-known ad-hoc on-demand distance vector (AODV) routing protocol, tailored to the requirements imposed by the characteristics of LEO satellite systems' topology ...
Stylianos Karapantazis, Evangelos Papapetrou, Fotini-Niovi Pavlidou   +2 more
openaire   +1 more source

Valutazione dell'incertezza di propagazione orbitale per un satellite LEO [PDF]

, 2022
Determinare con precisione la posizione che occuperà un satellite costituisce un aspetto fondamentale in molte applicazioni spaziali. Il presente lavoro è finalizzato alla valutazione dell'incertezza di propagazione orbitale per un satellite LEO.
Peruffo, Mattia
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