Method and system for rapidly constructing wireless channel knowledge map

Abstract

A method and system for rapidly constructing a wireless channel knowledge map. A channel knowledge map is constructed by image inpainting technique, and channel knowledge at a specific location is predicted by recovering the corresponding pixel value in an image matrix, so that channel-related knowledge of user equipment at any location in a targeted area is obtained. An input environmental map is decomposed at different frequencies by combining the similarity between the image inpainting problem and the channel knowledge map construction problem and by using a frequency band decomposition framework of a Laplacian pyramid. According to the characteristics of different frequency components, corresponding subnetworks are designed for feature extraction. Finally, the channel knowledge map is reconstructed by the inverse operation of the Laplacian pyramid. The method not only achieves higher construction accuracy at lower computational complexity, but also has strong generalization ability in various wireless communication scenarios.