Paulo Victor Fernandes de Melo

Mr. Paulo Victor Fernandes de Melo


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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16 February 2025 in Sensors
Verified
Journal Article
Open access
PDF file
DMDIOGO MOREIRA
DIOGO MOREIRA
GSGilmara Santos
Gilmara Santos
AYAngela Emi Yanai
Angela Emi Yanai
PSPedro Barreto de Souza
Pedro Barreto de Souza
PMPaulo Victor Fernandes de Melo
Paulo Victor Fernandes de Melo
EMEdjair Mota
Edjair Mota
The interference of human activities in water bodies has contributed to a deterioration in water quality. With the advancement of the Internet of Things (IoT), aided by transmission technologies such as LoRa (Long Range), low-cost solutions have emerged for long-distance environment monitoring scenarios. One key challenge in such IoT-based systems is selecting LoRa transmission parameters to ensure efficient data exchange among nodes, adapting to varying network conditions. Well-known strategies adapt transmission parameters according to network context through information exchange among nodes and LoRa gateway(s). In this work, we introduce a novel LoRa parameter selection algorithm by incorporating three major LoRa metrics (RSSI, SNR, and PDR) and conducting a comprehensive characterization and validation in the forest environment to build a set of reference values of transmission quality, which are employed in a binary search methodology, utilizing the R-array, representing the transmission quality according to LoRa parameters. The experimental results indicate that the proposed algorithm achieves a 16.20% reduction in Time on Air (ToA). Furthermore, our algorithm optimized the transmission power (TP) selection, achieving at least 38% lower energy consumption than ADR TP parameters. These results highlight that our proposed algorithm can enhance the transmissions in a rainforest environment.

12 November 2024 in Preprints.org
Verified
Preprint
Open access
PDF file
DMDIOGO MOREIRA
DIOGO MOREIRA
GSGilmara Santos
Gilmara Santos
AYAngela Emi Yanai
Angela Emi Yanai
PSPedro Barreto de Souza
Pedro Barreto de Souza
PMPaulo Victor Fernandes de Melo
Paulo Victor Fernandes de Melo
EMEdjair Mota
Edjair Mota
Human activities’ interference in water bodies has contributed to the deterioration of the water quality. With the advancement of the Internet of Things (IoT), aided by transmission technologies such as LoRa (Long Range), low-cost solutions have emerged for long-distance environment monitoring scenarios. One key challenge in such IoT-based systems is selecting LoRa transmission parameters to ensure efficient data exchange among nodes, adapting to varying network conditions. Well-known strategies adapting transmission parameters according to network context through information exchange among nodes and LoRa gateway(s). In this work, we introduce a novel LoRa parameter selection algorithm by incorporating three major LoRa metrics (RSSI, SNR, and PDR) and conducting a comprehensive characterization and validation in the forest environment to build a set of reference values of transmission quality, which are employed in a binary search methodology, utilizing the R-array, representing the transmission quality according of LoRa parameters. Experimental results indicated that the proposed algorithm achieves a 16.20% reduction in Time on Air (ToA). Furthermore, our algorithm optimized the Transmission Power (TP) selection, achieving at least 38% lower energy consumption than ADR TP parameters. These results highlight that our proposed algorithm can enhance the transmissions in a rainforest environment.