A New LoRa-like Transceiver Suited for LEO Satellite Communications
LoRa is based on the chirp spread spectrum (CSS) modulation, which has been developed for low power and long-range wireless Internet of Things (IoT) communications. The structure of LoRa signals makes their decoding performance extremely sensitive to synchronization errors. To alleviate this constra...
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-02-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/5/1830 |
| _version_ | 1797473778486214656 |
|---|---|
| author | Mohamed Amine Ben Temim Guillaume Ferré Romain Tajan |
| author_facet | Mohamed Amine Ben Temim Guillaume Ferré Romain Tajan |
| author_sort | Mohamed Amine Ben Temim |
| collection | DOAJ |
| description | LoRa is based on the chirp spread spectrum (CSS) modulation, which has been developed for low power and long-range wireless Internet of Things (IoT) communications. The structure of LoRa signals makes their decoding performance extremely sensitive to synchronization errors. To alleviate this constraint, we propose a modification of the LoRa physical layer, which we refer to as differential CSS (DCSS), associated with an original synchronization algorithm. Based on this modification, we are able to demodulate the received signals without performing a complete frequency synchronization and by tolerating some timing synchronization errors. Hence, our receiver can handle ultra narrow band LoRa-like signals since it has no limitation on the maximum carrier frequency offset, as is actually the case in the deployed LoRa receivers. In addition, in the presence of the Doppler shift varying along the packet duration, DCSS shows better performance than CSS, which makes our proposed receiver a good candidate for communication with a low-Earth orbit (LEO) satellite. |
| first_indexed | 2024-03-09T20:21:15Z |
| format | Article |
| id | doaj.art-4f2531f7537349c98c2e942fc160e057 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T20:21:15Z |
| publishDate | 2022-02-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-4f2531f7537349c98c2e942fc160e0572023-11-23T23:46:51ZengMDPI AGSensors1424-82202022-02-01225183010.3390/s22051830A New LoRa-like Transceiver Suited for LEO Satellite CommunicationsMohamed Amine Ben Temim0Guillaume Ferré1Romain Tajan2IMS, University of Bordeaux, Bordeaux INP, CNRS UMR 5218, F-33400 Talence, FranceIMS, University of Bordeaux, Bordeaux INP, CNRS UMR 5218, F-33400 Talence, FranceIMS, University of Bordeaux, Bordeaux INP, CNRS UMR 5218, F-33400 Talence, FranceLoRa is based on the chirp spread spectrum (CSS) modulation, which has been developed for low power and long-range wireless Internet of Things (IoT) communications. The structure of LoRa signals makes their decoding performance extremely sensitive to synchronization errors. To alleviate this constraint, we propose a modification of the LoRa physical layer, which we refer to as differential CSS (DCSS), associated with an original synchronization algorithm. Based on this modification, we are able to demodulate the received signals without performing a complete frequency synchronization and by tolerating some timing synchronization errors. Hence, our receiver can handle ultra narrow band LoRa-like signals since it has no limitation on the maximum carrier frequency offset, as is actually the case in the deployed LoRa receivers. In addition, in the presence of the Doppler shift varying along the packet duration, DCSS shows better performance than CSS, which makes our proposed receiver a good candidate for communication with a low-Earth orbit (LEO) satellite.https://www.mdpi.com/1424-8220/22/5/1830DCSSDoppler effectsIoTLoRaLPWANlow-Earth orbit satellite |
| spellingShingle | Mohamed Amine Ben Temim Guillaume Ferré Romain Tajan A New LoRa-like Transceiver Suited for LEO Satellite Communications Sensors DCSS Doppler effects IoT LoRa LPWAN low-Earth orbit satellite |
| title | A New LoRa-like Transceiver Suited for LEO Satellite Communications |
| title_full | A New LoRa-like Transceiver Suited for LEO Satellite Communications |
| title_fullStr | A New LoRa-like Transceiver Suited for LEO Satellite Communications |
| title_full_unstemmed | A New LoRa-like Transceiver Suited for LEO Satellite Communications |
| title_short | A New LoRa-like Transceiver Suited for LEO Satellite Communications |
| title_sort | new lora like transceiver suited for leo satellite communications |
| topic | DCSS Doppler effects IoT LoRa LPWAN low-Earth orbit satellite |
| url | https://www.mdpi.com/1424-8220/22/5/1830 |
| work_keys_str_mv | AT mohamedaminebentemim anewloraliketransceiversuitedforleosatellitecommunications AT guillaumeferre anewloraliketransceiversuitedforleosatellitecommunications AT romaintajan anewloraliketransceiversuitedforleosatellitecommunications AT mohamedaminebentemim newloraliketransceiversuitedforleosatellitecommunications AT guillaumeferre newloraliketransceiversuitedforleosatellitecommunications AT romaintajan newloraliketransceiversuitedforleosatellitecommunications |