ANALISIS DAMPAK INTERFERENSI TERHADAP KUALITAS SINYAL JARINGAN LONG RANGE FREKUENSI 920MHZ-923MHZ (AS2)
-
Hendro FJ Lami(1*)
Undana
-
Stephanie I Pella(2)
Universitas Nusa Cendana
(*) Corresponding Author
Abstract
This study modeled the interference between the Lora system signal in the AS2 frequency band and a non-Lora radio signal. Two Lora devices operate on uplink and downlink at a frequency of 923.2MHz to send and receive data on the bandwidth of 125KHz, 250KHz, and 500KHz. The interference generator device is composed of a single board computer installed by the RPITX application. In addition, there is a GNU-Radio application to monitor data and signal transmission levels. Signal quality tests (RSSI, SNR, and time-on-air(ToA)) were carried out under line-of-sight (LOS) conditions and used reference distances of 1m and 4m. The ToA test shows that the greater the bandwidth, the smaller the ToA value, while the change in distance does not affect the ToA. The RSSI test shows that the change in distance affects the RSSI value more significantly than the change in bandwidth. The presence of an interference signal does not significantly affect the RSSI value. SNR testing shows that the greater the bandwidth, the smaller the SNR and significantly decreases when interference occurs.
Downloads
References
Semtech Corporation, “What is LoRa?.” https://www.semtech.com/ lora/what-is-lora. Online; accessed: 20-Peb-2022.
The Things Network, “Frequency Plans by Country” https://www.thethingsnetwork.org/docs/lorawan/frequencies-by-country/. Online; accessed: 20-Peb-2022.
F. Sanchez Sutil and A. Cano-Ortega, “Smart Public Lighting Control ´ and Measurement System Using LoRa Network,” Electronics, vol. 9, p. 124, Jan 2020.
L.-Y. Chen, H.-S. Huang, C.-J. Wu, Y.-T. Tsai, and Y.-S. Chang, “A lora-based air quality monitor on unmanned aerial vehicle for smart city,” in 2018 International Conference on System Science and Engineering (ICSSE), pp. 1–5, IEEE, 2018.
R. Vega-Rodriguez, S. Sendra, J. Lloret, P. Romero-Diaz, and J. Luis Garcia-Navas, “Low Cost LoRa based Network for Forest Fire Detection,” in 2019 6th International Conference on Internet of Things:Systems, Management and Security (IOTSMS), pp. 177-184. IEEE, 2019
Kabalci, Y.; Ersan Kabalci, E.; Padmanaban, S.; Holm-Nielsen, J.B.; Blaabjerg, F. Internet of Things Applications as Energy Internet in Smart Grids and Smart Environments. Electronics 2019, 8, 972.
Lami, H. F., Rantelobo, K. R., Mandala, J. F., & Sampeallo, A. S. (2020). INTEGRASI PROTOKOL MQTT DAN HTTP UNTUK OTOMASI BERBASIS IOT PADA PERTANIAN LAHAN KERING. Jurnal Media Elektro, 53-59.
HENDRAWAN, Delisya Nabilla; USMAN, Uke Kurniawan; PRASETYA, Budi. Analisis Perencanaan Jaringan Long Range (lora) Dengan Frekuensi 920-923 Mhz Untuk Wilayah Palabuhanratu. eProceedings of Engineering, 2021, 8.5.
ELIJAH, Olakunle, et al. Effect of weather condition on Lora IoT communication technology in a tropical region: Malaysia. IEEE Access, 2021, 9: 72835-72843.
AFISIADIS, Orion, et al. On the error rate of the LoRa modulation with interference. IEEE Transactions on Wireless Communications, 2019, 19.2: 1292-1304.
ORFANIDIS, Charalampos, et al. Investigating interference between LoRa and IEEE 802.15. 4g networks. In: 2017 IEEE 13th International Conference on Wireless and Mobile Computing, Networking and Communications (WiMob). IEEE, 2017. p. 1-8.
QADIR, Qahhar Muhammad. Analysis of the reliability of LoRa. IEEE Communications Letters, 2020, 25.3: 1037-1040.
Adelantado, F., Vilajosana, X., Tuset-Peiro, P., Martinez, B., Melia-Segui, J., & Watteyne, T. (2017). Understanding the limits of LoRaWAN. IEEE Communications magazine, 55(9), 34-40.
The Things Network, “Spreading Factors” https://www.thethingsnetwork.org/docs/lorawan/frequencies-by-country/. Online; accessed: 20-Peb-2022.
Kementrian Komunikasi dan Informasi, “Spektrum Frekuensi dan Standar IoT dirilis tahun ini”, https://www.kominfo.go.id/content/detail/14110/spektrum-frekuensi-dan-standar-iot-dirilis-tahun-ini/0/sorotan_media. Online; accessed: 20 Peb-2022.
Dragino, “Lora-Lorawan-Gateway”,https://www.dragino.com/products/lora-lorawan-gateway.html,Online; accessed: 20 Peb-2022.
Kementrian Komunikasi dan Informasi, https://web.kominfo.go.id/sites/default/files/users/4752/%5B20180301%5D%20LAMPIRAN%20RPM%20TASFRI%20-%20untuk%20Konsultasi%20Publik%20Kedua.pdf, accessed: 20 Peb-2022.
Evariste Courjaud F5OEO, https://github.com/F5OEO/rpitx, accessed: 20 Peb-2022.
ARRL, https://www.arrl.org/files/file/Technology/tis/info/pdf/0683033.pdf, accessed: 21 Peb-2022.
This work is licensed under CC BY-SA 4.0
