Multi-HAPS THz Satellite Communication: Error and Capacity Analyses Under I/Q Imbalance

Satellite communication (SatCom) has become an important field of research to accomplish the requirements of next-generation wireless communication systems such as high data rates and capacity while providing global coverage. Besides traditional communication applications, SatCom is gathering more a...

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Bibliographic Details
Published in:IEEE sensors journal 2024-12, Vol.24 (23), p.39845-39855
Main Authors: Ahrazoglu, Evla Safahan, Altunbas, Ibrahim, Erdogan, Eylem
Format: Article
Language:English
Subjects:
Absorption
Atmospheric attenuation
Atmospheric modeling
Attenuation
Communication systems
Data collection
Environmental monitoring
Ergodic capacity analysis
Error analysis
error rate analysis
Fading channels
Ground stations
High altitude
high-altitude platform station (HAPS)
in-phase and quadrature (I/Q) imbalance
Monte Carlo simulation
Pollution monitoring
Quadratures
satellite communication (SatCom)
Satellite communications
Satellites
Sensors
Signal to noise ratio
terahertz (THz)
Terahertz communications
Variable gain
Wireless communication systems
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Summary:Satellite communication (SatCom) has become an important field of research to accomplish the requirements of next-generation wireless communication systems such as high data rates and capacity while providing global coverage. Besides traditional communication applications, SatCom is gathering more and more attention as it enhances the performance of sensing applications, such as environmental monitoring, atmospheric pollution monitoring, and so on. To deliver worldwide service and improve accurate data collection in sensor networks, high-altitude platform station (HAPS) systems can be employed in SatCom. Moreover, utilizing terahertz (THz) frequencies in HAPS-assisted SatCom systems offers incredibly high bandwidths, enabling extreme data rates and higher resolution in sensing applications. In this article, a THz SatCom system model is considered where K number of HAPS systems are deployed to assist the transmission between a low-Earth-orbit satellite and a ground station by utilizing variable-gain amplify-and-forward (AF) relaying. The symbol error rate (SER) and ergodic capacity analyses are performed in the presence of attenuation depending on the atmospheric conditions, fading, pointing error (PE), and in-phase and quadrature (I/Q) imbalance. Theoretical findings are validated through Monte-Carlo simulations.
ISSN:1530-437X
1558-1748
DOI:10.1109/JSEN.2024.3476957