Optimization of Sum-throughput for Downlink MIMO Non-Orthogonal Multiple Access System With MRC Precoding Matrix

Abstract

In recent years with the advancement of wireless communication technology and the popularization of mobile devices people's requirements for bandwidth efficiency and power efficiency are increasing day by day With the advent of the fifth generation mobile communication network while developing new technologies and combined with the old technology to think about how to increase the channel efficiency under the limited bandwidth to meet the required Quality of Service In today's network research MIMO technology and Non-Orthogonal Multiple Access (NOMA) technology have received considerable attention in recent year The background of this paper is the downstream transmission of a single-cell network using MIMO-NOMA transmission method and the MRC precoding technology at the transmitter The users are divided into clusters equal to the number of base station transmit antennas The users in the cluster share the same beamforming vector Since the original mathematical model established in this paper is a non-convex nonlinear programming problem it is linearly relaxed by piecewise-RLT、big M method、mathematical approximation of logarithmic terms and the branch and cut algorithm of CPLEX then we can finally find the optimal solution of the system

Date of Award	2020
Original language	English
Supervisor	Wen-Kuang Kuo (Supervisor)