LoRa Performance under Variable Interference and Heavy-Multipath Conditions

Wireless Communications and Mobile Computing

Michał Kowal¹  Kamil Staniec¹ 

[1]Faculty of Electronics, Telecommunications and Teleinformatics Department, Wroclaw University of Science and Technology, Wroclaw, Poland

DOI  :  10.1155/2018/6931083

来源: DOAJ

【 摘 要 】

LoRa (or LoRaWAN) is by far the best known representative of narrowband communication systems designed for the Internet of Things. As a system dedicated specifically for long-range operations, it possesses a considerable processing gain for the energetic link budget improvement and a remarkable immunity to multipath and interference. The paper describes outcomes of measurement campaigns during which the LoRa performance was tested against these two factors, that is, a heavy-multipath propagation and a controlled, variable interference generated, respectively, in a reverberation chamber and an anechoic chamber. Results allow quantitative appraisal of the system behavior under these harsh conditions with respect to LoRa’s three major configurable parameters: the spreading factor, bandwidth, and code rate. They also allow dividing LoRa configurational space into three distinct sensitivity regions: in the white region it is immune to both interference and multipath propagation, in the light-grey region it is only immune to the multipath phenomenon but sensitive to interference, and in the dark grey region LoRa is vulnerable to both phenomena.

【 授权许可】

Unknown