End-to-End Error Control Coding Capability of NB-IoT Transmissions in a GEO Satellite System with Time-Packed Optical Feeder Link

Joan Bas*, Alexis A. Dowhuszko

*Tämän työn vastaava kirjoittaja

Tutkimustuotos: Artikkeli kirjassa/konferenssijulkaisussaConference contributionScientificvertaisarvioitu

1 Lataukset (Pure)

Abstrakti

This paper focuses on the return link of a GEO satellite system that collects information from a large number of sparsely distributed IoT devices in a large geographical area. Narrow-Band (NB) IoT transmissions, with suitable Modulation and Coding Scheme (MCS), are Detected-and-Forwarded onboard the satellite, mapping each QAM symbol of the radio access link (uplink) into another PAM symbol that modulates optical feeder link’s intensity (downlink). Given the massive number of IoT devices that is expected to be served by the GEO satellite system, the feeder link (downlink) of the return channel is expected to be the bottleneck. To tackle this limitation, time-packing signaling is used in the waveform that modulates the intensity of the optical feeder link (downlink); this way, the symbol time is reduced, and the number of IoT devices that can be simultaneously served in the radio access link (uplink) can augment without increasing the signal bandwidth in the optical feeder link. The Inter-Symbol Interference (ISI) that the time-packed feeder link generates is partially mitigated in the satellite gateway, using for this purpose an adaptive linear equalizer. After optical-to-electrical conversion, the NB-IoT codewords that are received in the gateway are decoded, correcting simultaneously errors introduced in both radio access and optical feeder links. The aim of this paper is to evaluate the error correction capability that MCS of NB-IoT standard has when used to protect end-to-end the hybrid radio/optical return link that results, particularly when using large overlapping factors in the optical feeder link to increase its achievable data rate.

AlkuperäiskieliEnglanti
OtsikkoIndustrial IoT Technologies and Applications
AlaotsikkoProceedings of 4th EAI International Conference, Industrial IoT 2020
ToimittajatLourdes Peñalver, Lorena Parra
KustantajaSpringer Science and Business Media Deutschland GmbH
Sivut60-79
Sivumäärä20
ISBN (elektroninen)9783030710613
ISBN (painettu)9783030710606
DOI - pysyväislinkit
TilaJulkaistu - maaliskuuta 2021
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisuussa
TapahtumaEAI International Conference on Industrial IoT Technologies and Applications - Virtual, Online
Kesto: 11 joulukuuta 202011 joulukuuta 2020
Konferenssinumero: 4

Julkaisusarja

NimiLecture Notes of the Institute for Computer Sciences, Social-Informatics and Telecommunications Engineering, LNICST
Vuosikerta365 LNICST
ISSN (painettu)1867-8211
ISSN (elektroninen)1867-822X

Conference

ConferenceEAI International Conference on Industrial IoT Technologies and Applications
LyhennettäIndustrial IoT
KaupunkiVirtual, Online
Ajanjakso11/12/202011/12/2020

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