On the Performance of NOMA-based Cooperative Relaying with Receive Diversity
Conference: SCC 2019 - 12th International ITG Conference on Systems, Communications and Coding
02/11/2019 - 02/14/2019 at Rostock, Germany
doi:10.30420/454862013
Proceedings: SCC 2019
Pages: 6Language: englishTyp: PDF
Personal VDE Members are entitled to a 10% discount on this title
Authors:
Kumar, Vaibhav; Cardiff, Barry; Flanagan, Mark F. (School of Electrical and Electronic Engineering, University College Dublin, Belfield, Dublin 4, Ireland)
Abstract:
Non-orthogonal multiple access (NOMA) is widely recognized as a potential multiple access (MA) technology for efficient spectrum utilization in the fifth-generation (5G) wireless standard. In this paper, we present the achievable sum rate analysis of a cooperative relaying system (CRS) using NOMA with two different receive diversity schemes – selection combining (SC), where the antenna with highest instantaneous signal-to-noise ratio (SNR) is selected, and maximal-ratio combining (MRC). We also present the outage probability and diversity analysis for the CRS-NOMA system. Analytical results confirm that the CRS-NOMA system outperforms the CRS with conventional orthogonal multiple access (OMA) by achieving higher spectral efficiency at high transmit SNR and achieves a full diversity order.