Non-Orthogonal Multiple Access (NOMA) in Providing Services for High-Speed Railway and Local Users in DownLink MIMO System

摘要

In this paper, we contribute to investigate the problem that providing service for High Speed Railway (HSR) in multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) system to increase HSR rate. A novel system model is proposed to serve both HSR and local users. Coordinated Regularized Zero Forcing (CRZF) pre-coding is applied to deal with inter-cluster and inter-cell interference with considering the effect of Doppler Shift of HSR and the feedback delay of the Channel State Information (CSI). The proof of the performance of proposed model can outperform conventional MIMO-NOMA and MIMO-OMA is provided. At last, simulation is performed to demonstrate the correctness of the theory.