Scalability Analysis of a LoRa Network Under Inter-SF and Co-SF Interference with Poisson Point Process Model

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Mohammadi Solmaz; Farahani Gholamreza

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Journal Paper

Paper Information

Journal: JOURNAL OF COMPUTING AND SECURITY Year:2021 | Volume:8 | Issue:2 Page(s): 43-57

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Information Journal Paper

Title

Scalability Analysis of a LoRa Network Under Inter-SF and Co-SF Interference with Poisson Point Process Model

Author(s)

Mohammadi Solmaz | Farahani Gholamreza | Issue Writer Certificate

Keywords

Scalability of LoRa

LoRaWAN

Inter-SF and co-SF Interference

Coverage Probability

Success Probability

Abstract

The scalability of a single gateway LoRa network depends on different parameters such as interference and noise. The scheme of spreading factor allocation can control the interference and noise. This article analyzes the impact of the interference of the concurrent transmission with the same spreading factor (co-SF) and different spreading factor (inter-SF) on the scalability of the LoRa network. The interference has been modeled as the Poisson point process. The proposed scheme considers the success probabilities and device density (SPD) in each area in determining the width and boundaries of SF areas. The simulation results showed that the proposed SPD scheme had improved 13. 20% over the EIB method in terms of Success Probability under joint co-SF and inter-SF interference. Also, the Coverage Probability under the joint impact of cumulative co-SF and inter-SF interference of the SPD and EIB methods is compared in the clean and noisy conditions. The probability of coverage in EIB degrades more than SPD as the scalability increases. Also, the uplink performance of the proposed SPD scheme has been studied in the absence of any interference under AWGN. SPD has a higher Success Probability under AWGN than EIB.

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