Two-Stage Hybrid Precoding for Minimizing Residuals Using Convolutional Neural Network

This letter presents a two-stage (Ts) hybrid precoding algorithm based on convolutional neural network (CNN) with minimum hybrid precoding residual, named as Ts-CNN algorithm. Firstly, using the optimal precoding matrix as a label, a new CNN architecture is constructed, which can be trained to learn how to predict the vectorized hybrid precoder. Furthermore, a two-stage hybrid precoding scheme is ...