Long Range - Frequency Hopping Spread Spectrum
(LR-FHSS) framework is a promising technology to enable
Direct-to-Satellite (DtS) IoT systems with extensive coverage
and high resistance to interference while maintaining costeffectiveness. However, this system currently implements primitive channel coding in Frequency-Hopping Spread-Spectrum
(FH-SS) without considering the characteristics of the interference signal. In this work, we propose an innovative coded
frequency-hopping (FH) design that incorporates Segment-Level
Coding (SLC) in high order Galois field (GF) with erasure
detection to enhance immunity against clustered errors commonly encountered in FH-SS, thereby improving the reliability of
DtS communication. Additionally, our design inherits the packet
structure from LR-FHSS, enabling specific applicability in realworld scenarios. We have also established an analytical model
to validate our proposed design in terms of Packet loss rate
(PLR) and energy consumption. The mathematical analyses and
simulation of the proposed scheme quantify the effectiveness of
this enhancement. The numerical results show that the proposed
system can accommodate 20 times more users compared to
LR-FHSS at a packet loss rate of 0.001, and it costs only
approximately 50% of the energy consumption when achieving
equivalent performance.
- Coded Frequency Hopping for Direct-to-Satellite IoT Systems: Design and Analysis
- Dengke Wang - King Abdullah University of Science and TechnologyAhmed Elzanaty (Corresponding Author) - University of Surrey, School of Computer Science and Electronic EngineeringMohamed-Slim Alouini - King Abdullah University of Science and Technology
- IEEE Internet of Things Journal, pp.1-1
- 22/05/2024
- Towards IoT Everywhere, ORFS-2022-CRG11-5058.2, King Abdullah University of Science and Technology (Saudi Arabia, Jeddah) - KAUST
- 99925466102346
- School of Computer Science and Electronic Engineering
- English
- Journal article