2023
DOI: 10.48550/arxiv.2301.09894
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A Comparison between RSMA, SDMA, and OMA in Multibeam LEO Satellite Systems

Abstract: Low Earth orbit (LEO) satellite systems enable close to global coverage and are therefore expected to become important pillars of future communication standards. However, a particular challenge faced by LEO satellites is the high orbital velocities due to which a precise channel estimation is difficult. We model this influence as an erroneous angle of departure (AoD), which corresponds to imperfect channel state information (CSI) at the transmitter (CSIT).Poor CSIT and non-orthogonal user channels degrade the … Show more

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