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Research Article |

Performance Analysis of Hybrid Relay Selection in Cooperative NOMA Systems

Author(s): Noor H. Jassim* and Ibrahim Kh. Salih

Published In : International Journal of Electrical and Electronics Research (IJEER)        Volume 12, Issue 3

Publisher : FOREX Publication

Published : 10 September 2024

e-ISSN : 2347-470X

Page(s) : 1044-1050

DOI: https://doi.org/10.37391/IJEER.120339

Abstract

Cooperative NOMA is a method to improve the system performance, this could be done by enabling a user to relay the signal to other users or a dedicated relay. Several dedicated hybrid relays are distributed to forward the source’s signal to the destinations to further enhance the system and serve the users at the cell edge. However, operating several relays simultaneously reduces the spectral efficiency because they need orthogonal channels. Thus, hybrid relay selection is proposed and investigated as a cooperative technique to improve NOMA performance. The relay that provides the highest SNR channel is enabled to relay the signal while the other relays are disabled. BER, outage probability, and channel capacity are measured and investigated to assess the overall system performance. These indicators show that this relay selection is feasible, moreover, relay selection enhances the system reliability, flexibility, and data throughput.

Keywords: Cooperative NOMA, Hybrid Relay, Relay Selection.




Noor H. Jassim*, University of Tikrit; Email: Noor.h.jassim@st.tu.edu.iq

Ibrahim Kh. Salih, University of Tikrit; Email: ibrahimks65@tu.edu.iq

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Noor H. Jassim and Ibrahim Kh. Salih (2024), Performance Analysis of Hybrid Relay Selection in Cooperative NOMA Systems. IJEER 12(3), 1044-1050. DOI: 10.37391/IJEER.120339.