Advanced Signal Processing Techniques for Fixed and Mobile Satellite Communications
Pol Henarejos, Ana P\'erez-Neira, Nicol\`o Mazzali, Carlos Mosquera

TL;DR
This paper explores advanced signal processing methods, including 4D constellations, adaptive modulation schemes, and full-duplex transceiver techniques, to enhance throughput and reliability in fixed and mobile satellite communication systems.
Contribution
It introduces novel 4D constellation designs, an adaptive algorithm for optimizing transmission parameters, and a full-duplex transceiver operation method for satellite links.
Findings
4D constellations improve spectral efficiency.
Adaptive algorithms enhance throughput under error constraints.
Full-duplex transceivers effectively cancel self-interference.
Abstract
Enabling ultra fast systems has been widely investigated during recent decades. Although polarization has been deployed from the beginning in satellite communications, nowadays it is being exploited to increase the throughput of satellite links. More precisely, the application of diversity techniques to the polarization domain may provide reliable, robust, and fast satellite communications. Better and more flexible spectrum use is also possible if transmission and reception can take place simultaneously in close or even overlapping frequency bands. In this paper we investigate novel signal processing techniques to increase the throughput of satellite communications in fixed and mobile scenarios. First, we investigate four-dimensional (4D) constellations for the forward link. Second, we focus on the mobile scenario and introduce an adaptive algorithm which selects the optimal tuple of…
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