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Smart beamforming for direct LEO satellite access of future IoT

Author
Caus, M.; Perez, A.; Méndez, E.
Type of activity
Journal article
Journal
Sensors (Switzerland)
Date of publication
2021-07-17
Volume
21
Number
14, article 4877
First page
1
Last page
22
DOI
10.3390/s21144877
Project funding
Grup de Sistemes de Comunicacions (2017 SGR 1479)
TERESA - Hybrid TERrEstrial/Satellite Air Interface for 5G and Beyond (TEC2017-90093-C3-1-R)
Tecnologías 5G para eficiencia y reconfiguración de la infraestructura de acceso rápido y dispositivos móviles (RTI2018-099841-B-I00)
Repository
http://hdl.handle.net/2117/353532 Open in new window
URL
https://www.mdpi.com/1424-8220/21/14/4877 Open in new window
Abstract
Non-terrestrial networks (NTN) are expected to play a key role in extending and complementing terrestrial 5G networks in order to provide services to air, sea, and un-served or under-served areas. This paper focuses the attention on the uplink, where terminals are able to establish a direct link with the NTN at Ka-band. To reduce the collision probability when a large population of terminals is transmitting simultaneously, we propose a grant-free access scheme called resource sharing beamforming...
Citation
Caus, M.; Pérez, A.; Méndez, E. Smart beamforming for direct LEO satellite access of future IoT. "Sensors (Switzerland)", 17 Juliol 2021, vol. 21, núm. 14, article 4877, p. 1-22.
Keywords
Beamforming, Grant-free, LEO, Massive IoT, Massive MIMO, Non-orthogonal multiple access, Orthogonal frequency division multiplexing

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