Time-Delay-Estimation-Liked Detection Algorithm for LoRa Signals Over Multipath Channels

LoRa promises long range reliable communication for the Internet of Things (IoT). However, multipath fading severely affects LoRa's BER performance. In this letter, we propose a simple detection algorithm for the frame-based LoRa PHY signals mainly composed of a preamble and a variable-length PHY-payload. We first prove that detecting the frame-based LoRa signals over multipath fading channels can be formulated as a Time-delay-estimation...