Time Variant Doppler Compensation for TS-UNB

Abstract

This paper extends a terrestrial Internet of Things (IoT) solution to the satellite communication scenario. The IoT solution considered for this paper, uses the Telegram Splitting Ultra Narrow Band (TS-UNB) protocol. TS-UNB is standardized as a technical specification in the European Telecommunications Standards Institute (ETSI) specifications for Low Throughput Networks. This framework describes the impact of Low Earth Orbit (LEO) satellite channel, specifically the time varying Doppler shift on a TS-UNB receiver. Traditionally the TS-UNB receiver is equipped to handle the Doppler impairments that are typically observed in terrestrial scenarios. However for mitigating the high Doppler drifts introduced by a LEO satellite, the paper proposes a solution that can be applied to any TS-UNB based receiver.