Regression based Pilot Design for Doppler Effect Estimation and Compensation in LEO Satellite Communication with LoRa

Kang, J.‐S.; Im, Gyeongrae; Jung, Dong‐Hyun; Jung, Sooyeob; Kim, Jung-Bin; Kim, Pansoo; Ryu, Joon Gyu

doi:10.1109/apcc55198.2022.9943752

Cited by 4 publications

(2 citation statements)

References 3 publications

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“…The authors of [26] propose a receiver architecture to counteract the Doppler phenomenon, while a regressionbased pilot is designed in [27] for Doppler shift estimation and compensation at the receiver end.…”

Section: ) Doppler Aspects In Non-terrestrial Networkmentioning

confidence: 99%

Understanding the Limits of LoRa Direct-to-Satellite: The Doppler Perspectives

Asad Ullah,

Pasolini,

Mikhaylov

et al. 2024

IEEE Open J. Commun. Soc.

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The Long Range (LoRa) modulation enables low-cost and low-power communications, serving as the foundation for the widely adopted terrestrial low-power wide-area network (LPWAN) technology known as LoRaWAN. Owing to its effectiveness, this modulation scheme is emerging as a potential option to provide direct-to-satellite (DtS) connectivity supporting internet-of-things (IoT) applications in remote or hard-to-reach areas, and complementing existing terrestrial networks. Besides the link budget and interference, the Doppler effect is one of the main challenges in LoRa DtS connectivity. Earlier studies have extensively investigated the link budget and the network scalability aspects, confirming the feasibility of integrating LoRa with Low Earth Orbit (LEO) satellites. However, only a few studies examine the influence of the Doppler effect on LoRa DtS performance. Specifically, the majority of the available literature report empirical studies that analyze the Doppler effect solely for a specific set of communication parameters. There remains a need for extensive and comprehensive examination of LoRa DtS performance under a strong Doppler effect in the LEO scenario. In this paper, we discuss and thoroughly investigate the impact of the Doppler effect on the reliability of LoRa satellite links. In particular, we analytically study packet losses, distinguishing the effect of Doppler shift from Doppler rate, the latter being caused by the variation in the relative speed of LEO satellites with respect to a terrestrial IoT end-device. Our analysis accounts for the effects of key communications parameters and settings, such as bandwidths, carrier frequency, MAC payload, LEO satellite's orbital height, and LoRaWAN low data rate optimization (LDRO). Notably, the results identify the LoRa boundaries for direct to LEO satellite connectivity and can facilitate the selection of suitable parameters for future system designs. Specifically, our results demonstrate that the packet delivery ratio of the most vulnerable spreading factor, i.e., SF12, exceeds 82% when using 125 kHz bandwidth, 433 MHz carrier frequency, and 59 bytes payload for a satellite orbiting at 560 km height.

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Section: ) Doppler Aspects In Non-terrestrial Networkmentioning

confidence: 99%

Understanding the Limits of LoRa Direct-to-Satellite: The Doppler Perspectives

Asad Ullah,

Pasolini,

Mikhaylov

et al. 2024

IEEE Open J. Commun. Soc.

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“…In recent years, satellite communication has played an increasingly important role in modern society, being widely used in fields such as communication, navigation, and meteorology [1][2][3]. Satellite networks, as a significant form of satellite communication, offer advantages in terms of broad coverage and strong communication capabilities, drawing significant attention and research from industry experts [4].…”

Section: Introductionmentioning

confidence: 99%

Docker-based satellite network simulation platform

Chen,

2024

Third International Conference on Computer Technology, Information Engineering, and Electron Materials (CTIEEM 2023)

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In modern communication systems, satellite networks play a crucial role in providing global coverage and high-speed data transmission. Traditional network simulation tools face challenges such as high complexity, poor scalability, and inadequate performance, making them unsuitable for simulating satellite networks. To gain a better understanding of satellite network performance and operation, this paper introduces a Docker-based satellite network simulation platform. This platform simulates satellite constellation link establishment rules and uses Docker to construct satellite network topologies, automating snapshot switching, link simulation, satellite communication, and other functions. The platform provides an experimental environment for the design, optimization, and performance evaluation of satellite communication systems, aiding researchers in gaining deeper insights into the operation and performance characteristics of satellite networks.

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