Air-ground non-orthogonal multiple access uplink transmission method based on intelligent reflecting surface

The invention discloses an air-ground non-orthogonal multiple access uplink transmission method based on an intelligent reflecting surface, and belongs to the field of wireless communication. The method comprises the following steps: firstly, establishing an air-ground communication scene comprising a ground user, an unmanned aerial vehicle, an IRS and a base station, respectively modeling effective links from the ground user and the unmanned aerial vehicle to the base station in a current time slot, and calculating a signal-to-noise ratio of a received signal; then, the transmission rate, received by the base station, of the unmanned aerial vehicle and the ground user is calculated; taking the maximization of the total uplink transmission rate as an optimization target, and establishing a joint optimization problem about the flight path of the unmanned aerial vehicle, the IRS phase deviation, the transmitting power of the unmanned aerial vehicle user and the transmitting power of the ground user; and the pro