Robust Design for NOMA-Based Multibeam LEO Satellite Internet of Things
نویسندگان
چکیده
In this article, we investigate the issue of massive access in a beyond fifth-generation (B5G) multibeam low-Earth orbit (LEO) satellite Internet-of-Things (IoT) network presence channel phase uncertainty due to channel-state information (CSI) conveyance from devices via gateway. Rather than time-division multiple (TDMA) or frequency-division (FDMA) with multicolor pattern, new nonorthogonal (NOMA) scheme is adopted support IoT distributed over very wide range. Considering limited energy on LEO satellite, two robust beamforming algorithms against are proposed for minimizing total power consumption scenarios noncritical applications and critical applications, respectively. Both theoretical analysis simulation results validate effectiveness robustness supporting IoT.
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ژورنال
عنوان ژورنال: IEEE Internet of Things Journal
سال: 2021
ISSN: ['2372-2541', '2327-4662']
DOI: https://doi.org/10.1109/jiot.2020.3015995