Design of hybrid precoding using multipliers in alternating directions and subsequent interference cancellation

Abstract

A novel kind of dynamic connection structure was created in order to address the issue of excessive power consumption in millimeter wave multi-antenna systems brought on by numerous phase shifters (PS).Two hybrid precoding techniques, successive interference cancellation (SIC) and successive interference cancellation-alternating direction multiplier (SIC-ADMM), were suggested with the aim of optimizing spectrum efficiency.The SIC system divided the sum-rate problem into several sub-rate problems involving various radio frequency lines. Iteration was used to solve the analog portion of the problem, and a low-dimensional equivalent matrix was used to solve the digital half.Using the SIC scheme as a foundation, an enhanced SIC-ADMM scheme was developed by researching the multi-variable sub-rate problem in order to efficiently reduce computing complexity and achieve quick convergence.