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Transceiver Design and Performance Analysis for LR-FHSS-based Direct-to-Satellite IoT
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- Authors
- Sooyeob Jung, Seongah Jeong, Jinkyu Kang, Joon Gyu Ryu, Joonhyuk Kang
- Issue Date
- 2023-12
- Citation
- IEEE Communications Letters, v.27, no.12, pp.3310-3314
- ISSN
- 1089-7798
- Publisher
- Institute of Electrical and Electronics Engineers
- Language
- English
- Type
- Journal Article
- Abstract
- This letter presents a novel transceiver design aimed at enabling Direct-to-Satellite Internet of Things (DtS-IoT) systems based on the long-range frequency-hopping spread spectrum (LR-FHSS). Our focus is on the development of an accurate framing scheme through an analysis of the frame structure and key parameters pertaining to a Long-Range Wide-Area-Network (LoRaWAN). To handle the Doppler effect in DtS-IoT networks and simultaneously enable the reception of numerous frequency hopping signals, a robust signal detector for the receiver is proposed. We verify the performance of the proposed LR-FHSS transceiver design through simulations conducted in a realistic satellite channel environment, assessing several metrics.