Cognitive radio power distribution method based on improved artificial bee colony

The invention provides a cognitive radio power distribution method based on an improved artificial bee colony, which comprises the following steps: S1, in a time slot T, a cognitive user selects a master user for cooperative relay communication according to the size of a data packet carried by the master user, and the throughput of the cognitive user for transmitting own data is calculated; S2, after the throughput of the cognitive user in the cooperative communication is obtained, an objective function is constructed by combining a time allocation factor and the transmission power of the cognitive user; S3, an improved artificial bee colony algorithm is initialized, and the fitness value of the target function is calculated; and the transmission power with maximized throughput of the cognitive user is obtained. The improved artificial bee colony algorithm is used for carrying out power distribution on cognitive users, and the spectrum utilization rate can be improved through the method. By using the method p