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With the rapid expansion of low Earth orbit (LEO) constellations, thousands of satellites are now in operation, many equipped with onboard GNSS receivers capable of continuous orbit determination and time synchronization. This development…

信号处理 · 电气工程与系统科学 2026-01-14 Xing Liu , Xue Xian Zheng , José A. López-Salcedo , Tareq Y. Al-Naffouri , Gonzalo Seco-Granados

In this paper, we investigate the coverage performance of downlink satellite networks employing dynamic coordinated beamforming. Our approach involves modeling the spatial arrangement of satellites and users using Poisson point processes…

信号处理 · 电气工程与系统科学 2023-09-20 Daeun Kim , Jeonghun Park , Namyoon Lee

With the proliferated low-Earth-orbit (LEO) satellites in mega-constellations, the future Internet will be able to reach any place on Earth, providing high-quality services to everyone. However, high-quality operations in terms of…

网络与互联网体系结构 · 计算机科学 2022-12-13 Peng Hu

In this paper, we review well-known handovers algorithms in satellite environment. The modern research trends and contributions are proposed and summarized in order to overcome their considering problems in satellite-air-ground integrated…

网络与互联网体系结构 · 计算机科学 2021-07-20 Soohyun Park , Joongheon Kim

Based on the vision of global coverage for sixth-generation (6G) wireless communication systems, the low earth orbit (LEO) satellite-to-ground channel model for urban scenarios has emerged as highly important for the system design. In this…

系统与控制 · 电气工程与系统科学 2025-01-07 Jiahao Ning , Jinhao Deng , Yuanfang Li , Chi Zhao , Jiashu Liu , Songjiang Yang , Yinghua Wang , Jie Huang , Cheng-Xiang Wang

Low Earth Orbit (LEO) satellite networks are rapidly gaining traction today. Although several real-world deployments exist, our preliminary analysis of LEO topology performance with the soon-to-be operational Inter-Satellite Links (ISLs)…

网络与互联网体系结构 · 计算机科学 2024-09-12 Wenyi Zhang , Zihan Xu , Sangeetha Abdu Jyothi

With the increase in global positioning service demands and the requirement for more precise positioning, assisting existing medium and high orbit satellite-enabled positioning systems with low Earth orbit (LEO) satellites has garnered…

网络与互联网体系结构 · 计算机科学 2025-06-05 Ruibo Wang , Mustafa A. Kishk , Howard H. Yang , Mohamed-Slim Alouini

Low Earth orbit (LEO) mega-constellation satellite networks have shown great potential to extend the coverage capability of conventional terrestrial networks. How to systematically define, quantify, and assess the technical performance of…

性能 · 计算机科学 2024-01-23 Yu Wang , Chuili Kong , Xian Meng , Hejia Luo , Ke-Xin Li , Jun Wang

Large low-Earth orbit (LEO) satellite networks are being built to provide low-latency broadband Internet access to a global subscriber base. In addition to network transmissions, researchers have proposed embedding compute resources in…

分布式、并行与集群计算 · 计算机科学 2023-08-15 Tobias Pfandzelter , David Bermbach

Integrated sensing and communication (ISAC) and ubiquitous connectivity are two usage scenarios of sixth generation (6G) networks. In this context, low earth orbit (LEO) satellite constellations, as an important component of 6G networks, is…

信息论 · 计算机科学 2025-01-14 Qi Wang , Xiaoming Chen , Qiao Qi , Mili Li , Wolfgang Gerstacker

Low Earth orbit (LEO) satellite Internet of Things (IoT) has been identified as one of the important components of the sixth-generation (6G) non-terrestrial networks (NTN) to provide ubiquitous connectivity. Due to the low orbit altitude…

信息论 · 计算机科学 2025-09-03 Ming Ying , Xiaoming Chen , Qiao Qi , Zhaoyang Zhang

Low Earth orbit (LEO) satellites has brought about significant improvements in wireless communications, characterized by low latency and reduced transmission loss compared to geostationary orbit (GSO) satellites. Ultra-dense LEO satellites…

信息论 · 计算机科学 2024-12-12 Trinh Van Chien , Nguyen Minh Quan , Tri Nhu Do , Cuong Le , Tan N. Nguyen , Symeon Chatzinotas

This paper investigates the accuracy of recently proposed stochastic geometry-based modeling of low earth orbit (LEO) satellite networks. In particular, we use the Wasserstein Distance-inspired method to analyze the distances between…

网络与互联网体系结构 · 计算机科学 2022-07-26 Ruibo Wang , Mustafa A. Kishk , Mohamed-Slim Alouini

We consider the point process of signal strengths from transmitters in a wireless network observed from a fixed position under models with general signal path loss and random propagation effects. We show via coupling arguments that under…

概率论 · 数学 2014-11-20 Holger Paul Keeler , Nathan Ross , Aihua Xia

The extensive coverage offered by satellites makes them effective in enhancing service continuity for users on dynamic airborne and maritime platforms, such as airplanes and ships. In particular, geosynchronous Earth orbit (GEO) satellites…

信息论 · 计算机科学 2023-12-27 Dong-Hyun Jung , Hongjae Nam , Junil Choi , David J. Love

Satellite networks are recognized as an effective solution to ensure seamless connectivity worldwide, catering to a diverse range of applications. However, the broad coverage and broadcasting nature of satellite networks also expose them to…

信号处理 · 电气工程与系统科学 2023-12-13 Daeun Kim , Namyoon Lee

The Internet is going through a massive infrastructural revolution with the advent of low-flying satellite networks, 5/6G, WiFi7, and hollow-core fiber deployments. While these networks could unleash enhanced connectivity and new…

Recent advancements in low-Earth-orbit (LEO) satellites aim to bring resilience, ubiquitous, and high-quality service to future Internet infrastructure. However, the soaring number of space assets, increasing dynamics of LEO satellites and…

网络与互联网体系结构 · 计算机科学 2024-11-21 Peng Hu

With numerous ongoing deployments owned by private companies and startups, dense satellite constellations deployed in low Earth orbit (LEO) will play a major role in the near future of wireless communications. In addition, the 3rd…

网络与互联网体系结构 · 计算机科学 2021-01-12 Israel Leyva-Mayorga , Beatriz Soret , Petar Popovski

With the rapid development of sixth-generation (6G) communication technology, global communication networks are moving towards the goal of comprehensive and seamless coverage. In particular, low earth orbit (LEO) satellites have become a…

信号处理 · 电气工程与系统科学 2024-11-08 Wenjun Lan , Kongyang Chen , Jiannong Cao , Yikai Li , Ning Li , Qi Chen , Yuvraj Sahni