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The rapid development of communication technologies in the past decades has provided immense vertical opportunities for individuals and enterprises. However, conventional terrestrial cellular networks have unfortunately neglected the huge…

Signal Processing · Electrical Eng. & Systems 2021-06-22 Shicong Liu , Zhen Gao , Yongpeng Wu , Derrick Wing Kwan Ng , Xiqi Gao , Kai-Kit Wong , Symeon Chatzinotas , Bjorn Ottersten

The use of Low Earth Orbit (LEO) satellites in the next generation (Next-G) communication systems has been gaining traction over the last few years due to their potential for providing global connectivity with low latency. Since they are…

Signal Processing · Electrical Eng. & Systems 2025-06-03 Sambrama , Venkata Srirama Rohit Kantheti , Liang C Chu , Erik Blasch , Shih-Chun Lin

Small satellites in Low Earth Orbit (LEO) attract much attention from both industry and academia. The latest production and launch technologies constantly drive the development of LEO constellations. However, the wideband signal, except…

Networking and Internet Architecture · Computer Science 2023-08-10 Zhuoao Xu , Yue Gao , Gaojie Chen , Ryan Fernandez , Vedaprabhu Basavarajappa , Rahim Tafazolli

Recently advanced low-Earth-orbit (LEO) satellite networks represented by large constellations and advanced payloads provide great promises for enabling high-quality Internet connectivity to any place on Earth. However, the traditional…

Systems and Control · Electrical Eng. & Systems 2022-12-08 Peng Hu

Low Earth orbit (LEO) satellites offer a promising alternative to global navigation satellite systems for precise positioning; however, their relatively low altitudes make them more susceptible to orbital perturbations, which in turn…

Signal Processing · Electrical Eng. & Systems 2025-11-11 Jie Ma , Pinjun Zheng , Xing Liu , Yuchen Zhang , Ali A. Nasir , Tareq Y. Al-Naffouri

Integrated communications and localization (ICAL) will play an important part in future sixth generation (6G) networks for the realization of Internet of Everything (IoE) to support both global communications and seamless localization.…

Information Theory · Computer Science 2024-09-13 Li You , Xiaoyu Qiang , Yongxiang Zhu , Fan Jiang , Christos G. Tsinos , Wenjin Wang , Henk Wymeersch , Xiqi Gao , Björn Ottersten

In this paper, we explore the integration of communication and synthetic aperture radar (SAR)-based remote sensing in low Earth orbit (LEO) satellite systems to provide real-time SAR imaging and information transmission. Considering the…

Information Theory · Computer Science 2025-08-15 Yichao Xu , Xiaoming Chen , Ming Ying , Zhaoyang Zhang

Satellite communication by leveraging the use of low earth orbit (LEO) satellites is expected to play an essential role in future communication systems through providing ubiquitous and continuous wireless connectivity. This thus has…

Networking and Internet Architecture · Computer Science 2022-10-18 Jingwei Zhang , Dali Qin , Chuili Kong , Feiran Zhao , Rong Li , Jun Wang , Ye Wang

The prospect of mankind returning to the Moon has garnered a great amount of attention in recent years. Dozens of lunar missions are planned for the coming decade which will require the development of a sustainable communication…

Systems and Control · Electrical Eng. & Systems 2022-03-31 Waseem Raza , Ethan Abele , John OHara , Behnaz Sadr , Peter LoPresti , Ali Imran , Wooyeol Choi , Ickhyun Song , Serhat Altunc , Obadiah Kegege , Sabit Ekin

In this paper, we propose a terrestrial-satellite network (TSN) architecture to integrate the ultra-dense low earth orbit (LEO) networks and the terrestrial networks to achieve efficient data offloading. In TSN, each ground user can access…

Networking and Internet Architecture · Computer Science 2018-11-14 Boya Di , Hongliang Zhang , Lingyang Song , Yonghui Li , Geoffrey Ye Li

Low earth orbit (LEO) satellite communication systems have gained increasing attention as a crucial supplement to terrestrial wireless networks due to their extensive coverage area. This letter presents a novel system design for LEO…

Information Theory · Computer Science 2024-03-12 Shining Lin , Jiancheng An , Lu Gan , Mérouane Debbah , Chau Yuen

Free space optical communication has merged the aspects of fiber optics and the wireless communication which are the most conquered and controlled telecommunication technologies. Most of the features of free space optics (FSO) are…

Signal Processing · Electrical Eng. & Systems 2017-11-30 Tayyab Mehmood , Nauman Hameed

With the rapid development of satellite communication technologies, the space-based access network has been envisioned as a promising complementary part of the future 6G network. Aside from terrestrial base stations, satellite nodes,…

Signal Processing · Electrical Eng. & Systems 2022-07-26 Zhenyu Xiao , Junyi Yang , Tianqi Mao , Chong Xu , Rui Zhang , Zhu Han , Xiang-Gen Xia

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…

Systems and Control · Electrical Eng. & Systems 2025-01-07 Jiahao Ning , Jinhao Deng , Yuanfang Li , Chi Zhao , Jiashu Liu , Songjiang Yang , Yinghua Wang , Jie Huang , Cheng-Xiang Wang

Direct-to-satellite IoT DtS IoT communication structure is a promising solution to provide connectivity and extend the coverage of traditional low-power and long-range technologies, especially for isolated and remote areas where deploying…

Networking and Internet Architecture · Computer Science 2024-10-01 Mohammad Al Mojamed

As air travel demand increases, uninterrupted high-speed internet access becomes essential. However, current satellite-based systems face latency and connectivity challenges. While prior research has focused on terrestrial 5G and…

Networking and Internet Architecture · Computer Science 2025-04-11 Raúl Parada , Victor Monzon Baeza , Carlos Horcajo Fernández de Gamboa , Rocío Serrano Camacho , Carlos Monzo

The emergence of low Earth orbit (LEO) satellite mega-constellations is dynamically transforming the space sector. While free-space optical (FSO) links efficiently facilitate intersatellite data forwarding, they suffer from…

Networking and Internet Architecture · Computer Science 2024-03-26 Pablo G. Madoery , Juan A. Fraire , Jorge M. Finochietto , Halim Yanikomeroglu , Gunes Karabulut Kurt

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…

Information Theory · Computer Science 2025-09-03 Ming Ying , Xiaoming Chen , Qiao Qi , Zhaoyang Zhang

The development of a Low-Earth-Orbit (LEO) based solar-shade system, as part of a technically- and financially-viable multipurpose system to provide long-term solutions to global warming and the energy crisis is discussed. The proposed…

General Physics · Physics 2015-04-21 Rahul Suresh , Andrew Meulenberg

The integration of Non-Terrestrial Networks (NTNs) with Low Earth Orbit (LEO) satellite constellations into 5G and Beyond is essential to achieve truly global connectivity. A distinctive characteristic of LEO mega constellations is that…

Networking and Internet Architecture · Computer Science 2026-03-16 Israel Leyva-Mayorga , Fabio Saggese , Lintao Li , Petar Popovski