Performance Evaluation and Low-Complexity Detection of the PHY Modulation of LR-FHSS Transmission in IoT Networks
Date
2024-06-24
Authors
Maleki, Alireza
Bedeer, Ebrahim
Barton, Robert
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Institute of Electrical and Electronics Engineers (IEEE)
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Abstract
Long-range frequency-hopping spread spectrum (LR-FHSS) is a new transmission protocol introduced under the long-range wide area network (LoRaWAN) specifications to tackle the issue of extremely long-range and large-scale internet of things (IoT) deployment scenarios. Unlike the other LoRaWanscheme, i.e., the one based on the chirp spread spectrum (CSS) modulation, the physical layer of LR-FHSS exploits a 488 Hz Gaussian minimum shift keying (GMSK) modulation. In this paper, we investigate and model the FHSS-GMSK modulation and evaluate its bit error rate (BER) performance in the LR-FHSS system using simulations. We also propose a low-complexity GMSK signal detection scheme that can be used at the gateway (GW) of an IoT network with a massive number of IoT end devices (EDs). Using computer simulations, we show that our proposed detector can offer a tradeoff between the complexity of the receiver and the bit error rate (BER) performance.
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Maleki, A., Bedeer, E., & Barton, R. (2024). Performance evaluation and low-complexity detection of the PHY modulation of LR-FHSS transmission in IOT Networks. 2024 IEEE 99th Vehicular Technology Conference (VTC2024-Spring), 1–7. https://doi.org/10.1109/vtc2024-spring62846.2024.10683565
Keywords
Performance evaluation, Computational modeling, Bit error rate, Modulation, Receivers, Detectors, Physical layer
Citation
Maleki, A., Bedeer, E., & Barton, R. (2024). Performance evaluation and low-complexity detection of the PHY modulation of LR-FHSS transmission in IOT Networks. 2024 IEEE 99th Vehicular Technology Conference (VTC2024-Spring), 1–7. https://doi.org/10.1109/vtc2024-spring62846.2024.10683565
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DOI
10.1109/vtc2024-spring62846.2024.10683565