Guangdong University of Technology

Yantai Patronus Biotech Co., Ltd.

Guangzhou Patronus Biotech Co., Ltd.

Yu Zhou

Yi Fang

Huan Ma

Bo Nie

Jing Jin

The present invention relates to a recombinant particle protein suitable for industrial production and a preparation method therefor. The product is prepared by the following method: transfecting a host cell with a plasmid vector comprising a sequence encoding the recombinant particle protein for expression in the cell, harvesting and disrupting the bacterial cells, heating, incubating with urea and sodium chloride, and performing chromatography. The particle size of the product is uniform, and the batch-to-batch consistency in particle size is good. The product prepared by the method can reduce the cost of large-scale industrial mass production, the method is simple to operate, and the product has low impurity residue and a good safety profile.

Recombinant particle protein product suitable for industrial production and preparation method therefor

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 is subjected to PSK constellation mapping based on a preset constellation point coordinate set to output a PSK constellation point set; the LoRa signal set is subjected to PSK modulation based on a preset imaginary unit and the PSK constellation point set to generate a transmission signal; a complex number sequence is generated based on the transmission signal and a preset raw down chirp signal; and real-imaginary part judgment is performed on the complex number sequence to output a LoRa modulation information sequence set and a PSK symbol judgment result. A signal transmission system based on CA-LoRa is further provided.

Signal transmission method and system based on constellation-aided LoRa

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Guangzhou, China

Yu Zhou