Z. Ding and H. V. Poor, Advantages of NOMA for Multi-User BackCom Networks, IEEE Communications Letters, submitted (arxiv:2105.14830).
The aim of this paper is to show the necessarity of using NOMA in BackCom systems, when OFDM or SDMA is used in legacy systems.
In this folder, you can find a copy of the paper and the Matlab codes.