ALEXANDRIA, Va., Sept. 17 -- United States Patent no. 12,418,446, issued on Sept. 16, was assigned to Guangdong University of Technology (Guangzhou, China).
"Signal transmission method and system based on constellation-aided LoRa" was invented by Yi Fang (Guangzhou, China), Yu Zhou (Guangzhou, China), Huan Ma (Guangzhou, China) and Bo Nie (Guangzhou, China).
According to the abstract* released by the U.S. Patent & Trademark Office: "A signal transmission method based on constellation-aided LoRa modulation includes: a modulated bit sequence and a phase shift keying (PSK) bit sequence are obtained, and the modulated bit sequence is subjected to Gray mapping and spread spectrum modulation to generate a LoRa signal set; the PSK bit sequence i...