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In free-space optical satellite networks (FSOSNs), satellites can have different laser inter-satellite link (LISL) ranges for connectivity. Greater LISL ranges can reduce network latency of the path but can also result in an increase in…

Signal Processing · Electrical Eng. & Systems 2023-12-11 Jintao Liang , Aizaz U. Chaudhry , Eylem Erdogan , Halim Yanikomeroglu , Gunes Karabulut Kurt , Peng Hu , Khaled Ahmed , Stephane Martel

In free-space optical satellite networks (FSOSNs), satellites connected via laser inter-satellite links (LISLs), latency is a critical factor, especially for long-distance inter-continental connections. Since satellites depend on solar…

Signal Processing · Electrical Eng. & Systems 2023-12-11 Jintao Liang , Aizaz Chaudhry , John Chinneck , Halim Yanikomeroglu , Gunes Kurt , Peng Hu , Khaled Ahmed , Stephane Martel

Dynamic laser inter-satellite links (LISLs) provide the flexibility of connecting a pair of satellites as required (dynamically) while static LISLs need to be active continuously between the energy-constrained satellites. However, due to…

Networking and Internet Architecture · Computer Science 2023-01-16 Dhiraj Bhattacharjee , Aizaz U. Chaudhry , Halim Yanikomeroglu , Peng Hu , Guillaume Lamontagne

Laser inter-satellite links (LISLs) are envisioned between satellites in upcoming satellite constellations, such as Phase I of SpaceX's Starlink. Within a constellation, satellites can establish LISLs with other satellites in the same…

Signal Processing · Electrical Eng. & Systems 2021-03-02 Aizaz U. Chaudhry , Halim Yanikomeroglu

Formed by using laser inter-satellite links (LISLs) among satellites in upcoming low Earth orbit and very low Earth orbit satellite constellations, optical wireless satellite networks (OWSNs), also known as free-space optical satellite…

Signal Processing · Electrical Eng. & Systems 2021-06-16 Aizaz U. Chaudhry , Halim Yanikomeroglu

Optical inter-satellite links (OISLs) improve connectivity between satellites in space. They offer advantages such as high-throughput data transfer and reduced size, weight, and power requirements compared to traditional radio frequency…

Signal Processing · Electrical Eng. & Systems 2025-01-07 Bodong Shang , Shuo Zhang , Zi Jing Wong

The sixth-generation (6G) network is expected to achieve global coverage based on the space-air-ground integrated network, and the latest satellite network will play an important role in it. The introduction of inter-satellite links (ISLs)…

Systems and Control · Electrical Eng. & Systems 2023-10-27 Guanhua Wang , Fang Yang , Jian Song , Zhu Han

Free space optics (FSO) refers to optical wireless communications in outdoor environments. The aim of this paper is to analyze the role that FSO is envisaged to play in the creation of next-generation satellite networks. To begin with, the…

Signal Processing · Electrical Eng. & Systems 2020-10-08 Aizaz U. Chaudhry , Halim Yanikomeroglu

Non-terrestrial networks (NTNs) increasingly rely on non-geostationary (NGSO) constellations that combine radio frequency (RF) feeder links (FLs) with free space optical (FSO) inter-satellite links (ISLs). Downlink performance in such…

Signal Processing · Electrical Eng. & Systems 2026-03-16 Abid Afridi , Alexis A. Dowhuszko , Jevgenij Krivochiza , Risto Wichman , Jyri Hämäläinen

Low Earth orbit (LEO) satellite mega constellations are beginning to include laser inter-satellite links (LISLs) to extend the Internet to the most remote locations on Earth. Since the process of establishing these links incurs a setup…

Networking and Internet Architecture · Computer Science 2024-06-05 Dhiraj Bhattacharjee , Pablo G. Madoery , Aizaz U. Chaudhry , Halim Yanikomeroglu , Gunes Karabulut Kurt , Peng Hu , Khaled Ahmed , Stephane Martel

Large-scale low-Earth-orbit satellite constellations offer a promising platform for global low-latency networking, aided by faster propagation in free space than in fiber and copper. In such systems, end-to-end latency is largely determined…

Networking and Internet Architecture · Computer Science 2026-04-20 Arman Mollakhani , Jerayu Tiamraj , Shu-Jie Cao , Dongning Guo

Optical wireless satellite networks (OWSNs) can provide lower latency data communications compared to optical fiber terrestrial networks (OFTNs). The crossover function enables to calculate the crossover distance for an OWSN and an OFTN. If…

Signal Processing · Electrical Eng. & Systems 2022-08-16 Aizaz U. Chaudhry , Halim Yanikomeroglu

End-to-end latency in large low-Earth-orbit (LEO) constellations is dominated by propagation delay, making total delay roughly proportional to the network diameter, the longest shortest path in hops. Current inter-satellite link (ISL)…

Networking and Internet Architecture · Computer Science 2026-01-12 Arman Mollakhani , Jerayu Tiamraj , Shu-Jie Cao , Dongning Guo

Free-space optical satellite networks (FSOSNs) will employ free-space optical links between satellites and between satellites and ground stations, and the link budget for optical inter-satellite links and optical uplink/downlink is analyzed…

Signal Processing · Electrical Eng. & Systems 2022-04-29 Jintao Liang , Aizaz U. Chaudhry , Eylem Erdogan , Halim Yanikomeroglu

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

Low Earth orbit (LEO) satellites play a crucial role in providing global connectivity for non-terrestrial networks (NTNs) and supporting various Internet-of-Remote-Things (IoRT) applications. Each LEO satellite functions as a relay node in…

Networking and Internet Architecture · Computer Science 2024-05-28 Jinho Choi

Utilizing Low Earth Orbit (LEO) satellite networks equipped with Inter-Satellite Links (ISL) is envisioned to provide lower delay compared to traditional optical networks. However, LEO satellites have constrained energy resources as they…

Information Theory · Computer Science 2023-07-11 Kosta Dakic , Chiu Chun Chan , Bassel Al Homssi , Kandeepan Sithamparanathan , Akram Al-Hourani

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…

Networking and Internet Architecture · Computer Science 2021-01-12 Israel Leyva-Mayorga , Beatriz Soret , Petar Popovski

This paper investigates uplink transmission from a single-antenna mobile phone to a cluster of satellites, emphasizing the role of inter-satellite links (ISLs) in facilitating cooperative signal detection. The study focuses on non-ideal…

Signal Processing · Electrical Eng. & Systems 2025-02-04 Zohre Mashayekh Bakhsh , Yasaman Omid , Gaojie Chen , Farbod Kayhan , Yi Ma , Rahim Tafazolli

This paper investigates energy-efficient inter-satellite communication in Low Earth Orbit (LEO) networks, where satellites exchange both buffered and newly generated data through half-duplex inter-satellite links (ISLs). Due to orbital…

Signal Processing · Electrical Eng. & Systems 2026-03-18 Yomali Lokugama , Charith Dissanayake , Saman Atapattu , Kandeepan Sithamparanathan
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