Performance Analysis on Non-SIC ML Receiver for NOMA Strong Channel User

Abstract

We analyze the performance of the maximum likelihood (ML) receiver for the stronger channel user of non-orthogonal multiple access (NOMA), when no successive interference cancelation (SIC) is performed. This paper compares the non-SIC ML receiver to the standard receiver with the SIC. It is shown that the performance of the non-SIC ML receiver is almost the same as that of the standard receiver with the SIC for the operating range of the power allocation factor less than 20 %. In result, the non-SIC ML receiver could be a promising scheme for the NOMA stronger channel user, reducing the SIC complexity.