Near Field Ultra Large Scale Mimo Hybrid Precoding Algorithm Based on Alternating Direction Multiplier Method (ADMM) Algorithm

A new method of pre-coding and decoding for large scale MIMO (Multiple Input Multiple Output) is proposed. Among the existing methods, the pre-coding matrix has high structure complexity, slow convergence and does not make full use of non-convex characteristics and constraints. Therefore, this topic intends to use the ADMM method to solve the above problems. On this basis, this project studies a new method, which divides the optimal solution of precoding matrix into several sub-problems. Lagrange multiplier is used for parallel operation and optimization. The aim of this project is to provide an efficient and practical optimization method for precoding and decoding in large-scale multi-antenna communication systems. The experimental results show that the average transmission rate of ADMM NF-VLSI is about 869.7 bps/Hz.