Enhanced LR-FHSS receiver for headerless frame recovery in space–terrestrial integrated IoT networks

IF 4.4 2区计算机科学 Q1 COMPUTER SCIENCE, HARDWARE & ARCHITECTURE

Computer Networks Pub Date : 2025-02-01 DOI:10.1016/j.comnet.2024.111018

Diego Maldonado , Leonardo S. Cardoso , Juan A. Fraire , Alexandre Guitton , Oana Iova , Megumi Kaneko , Hervé Rivano

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引用次数: 0

Abstract

Long-Range Frequency Hopping Spread Spectrum (LR-FHSS) is a recent IoT modulation technique designed for communication between low-power ground end-devices and Low-Earth Orbit (LEO) satellites. To successfully decode a frame, an LR-FHSS gateway must receive at least one header replica and a substantial portion of the payload fragments. However, the likelihood of LR-FHSS header loss increases with the number of concurrent transmissions. Moreover, Doppler effects (such as the Doppler shift and the Doppler rate) distort the signals the satellites receive. This paper investigates advanced receiver techniques for recovering LR-FHSS frames with lost headers characterized by significant Doppler effects. This paper’s main contribution is specifying and validating a novel LR-FHSS receiver model for space–terrestrial integrated IoT environments. Obtained simulation results prove that our enhanced LR-FHSS receiver can decode a significant portion of the missing frames, improving the overall throughput achievable by using the legacy LR-FHSS receiver.

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来源期刊

Computer Networks 工程技术-电信学

CiteScore

10.80

自引率

3.60%

发文量

434

审稿时长

8.6 months

期刊介绍： Computer Networks is an international, archival journal providing a publication vehicle for complete coverage of all topics of interest to those involved in the computer communications networking area. The audience includes researchers, managers and operators of networks as well as designers and implementors. The Editorial Board will consider any material for publication that is of interest to those groups.