SATELLITE COMMUNICATION SYSTEMS: ARCHITECTURE, TECHNOLOGIES, APPLICATIONS, AND FUTURE DEVELOPMENT
Keywords:
satellite communication, LEO, GEO, MEO, high-throughput satellite, 5G/6G, non-terrestrial networks, broadband, IoT.Abstract
Satellite communication systems are a fundamental component of modern
global telecommunications, providing wide-area connectivity where terrestrial
infrastructure is unavailable, economically inefficient, or vulnerable to disruption. This
article reviews the architecture and operating principles of contemporary satellite
communication systems, compares geostationary, medium-Earth-orbit, and low-Earth
orbit platforms, and discusses key technologies including multibeam antennas,
frequency reuse, adaptive coding and modulation, high-throughput satellites, and
optical inter-satellite links. Particular attention is given to the integration of satellite
networks with 5G/6G non-terrestrial networks, Internet of Things services, emergency
communications, and broadband access. The study also identifies major engineering
constraints such as propagation loss, latency, spectrum congestion, interference, orbital
sustainability, and cybersecurity. The analysis shows that future satellite systems will
increasingly operate as software-defined, multi-orbit and interoperable networks
capable of complementing terrestrial infrastructure and supporting resilient global
digital connectivity.
References
1.ITU-T Recommendation Y.3207, Fixed, mobile and satellite convergence –
Integrated network control architecture framework for IMT-2020 networks and
beyond, 2024.
2. ITU-T Supplement Y.Sup81, Use cases of satellite communications in developing
countries, 2024.
3. ITU-R Recommendation M.2177-0, Detailed specifications of the satellite radio
interfaces of IMT-2020, 2026.
