Power distribution method for cellular-removed large-scale MIMO system based on particle swarm optimization

The invention discloses a cellular-removed large-scale MIMO system power distribution method based on a particle swarm algorithm, and the method comprises the steps: firstly, in a cellular-removed large-scale MIMO system employing non-ideal hardware and a superposition pilot frequency transmission scheme, obtaining a user transmission rate lower bound expression by employing a UatF technology; then, establishing an optimization problem by taking user pilot frequency and data transmitting power as independent variables and taking maximized user total rate as a target function; secondly, under the condition of multivariable coupling, solving an optimal solution of the optimization problem by using a particle swarm algorithm; and finally, according to the determined pilot frequency and data transmitting power, controlling a user side to transmit a pilot frequency signal and a data signal, thereby realizing an optimization target. According to the method, the pilot frequency and the data transmitting power of the