Self-adaptive modulation method based on k-means clustering algorithm

The invention discloses an adaptive modulation method based on a k-means clustering algorithm, and the method comprises the steps: S1, carrying out the clustering of all nodes through a k-means clustering algorithm according to the geographic positions of all nodes and the number K of clusters, and obtaining the center coordinates of all clusters; s2, selecting a single node in the cluster as a cluster head, and determining a modulation mode adopted by uplink wireless transmission from the cluster head node to the base station; s3, judging whether the modulation modes adopted by all cluster heads meet the transmission rate requirement after aggregation of the member node data in the cluster, if so, executing the step S5, and otherwise, executing the step S4; s4, increasing the number K of the clusters to be equal to K + 1, and turning to the step S1; and S5, according to the determined clustering and modulation mode, the cluster member node and the cluster head node carry out data transmission. According to t