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https://ptsldigital.ukm.my/jspui/handle/123456789/475865| Title: | Packet delivery ratio analysis based on atmospheric attenuation for LoRa technology |
| Authors: | Md Hossinuzzaman (P92234) |
| Supervisor: | Dahlila Putri Dahnil Sikumbang, Dr. |
| Keywords: | Universiti Kebangsaan Malaysia -- Dissertations Dissertations, Academic -- Malaysia Long Range Wireless technology Atmospheric attenuation |
| Issue Date: | 1-Sep-2018 |
| Description: | Long Range (LoRa) is a wireless technology that uses radio frequency bands to transmit data. The key features for this wireless technology include long coverage range, low power consumption required, secured end-to-end encryption and low cost. The WiFi, Bluetooth and Zigbee are other types of wireless technology that consumed more energy and have shorter coverage area compared to LoRa. All these types of wireless technology are dependent on the strength of the radio signal. Studies on the effect of atmospheric attenuation to transmission of radio signals are important since many applications are meant for outdoor deployment. In this paper, we developed a LoRa-based wireless network to evaluate and measure the packet delivery ratio (PDR) due to the atmospheric attenuation especially in rain for non-line-of-sight environments. To meet these objectives, we have designed and developed a testbed for our network, where we have three different nodes performing as end node, master node and gateway in the network. The network setup is based on a mesh network and each of the nodes will send data to the immediate node which then will forward the data to a gateway. The testbed is used to evaluate and measure the packet delivery ratio in different atmospheric attenuation and the maximum coverage distance is also recorded. We have tested our network in different atmospheric attenuation and at different timing of a day to collect PDR. The experiments are conducted in different scenarios such as when it rains and without rain to measure the effects of atmospheric attenuation and in line-of-sight and non-line-of-sight environments to measure the maximum successful transmission coverage. In all the experiments, the data packet is sent for 20minutes. The results show that, there is a significant drop of PDR when the rain intensity increases and the PDR drops from 100% to 89.5% when the rain intensity increases from 0mm to 45mm and this network can successfully cover up to 1.7 km in lineof sight environment and around 1.3 km in non-line-of-sight environment with 100% PDR value. The experiment concludes that the PDR is affected by the atmospheric attenuation. Thus, the effect of atmospheric attenuation has to be considered when designing any LoRa applications for outdoor deployment.,Master of Information Technology |
| Pages: | 111 |
| Call Number: | FTSM |
| Publisher: | UKM, Bangi |
| URI: | https://ptsldigital.ukm.my/jspui/handle/123456789/475865 |
| Appears in Collections: | Faculty of Information Science and Technology / Fakulti Teknologi dan Sains Maklumat |
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