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Download fileEnabling User Relaying In MCM-NOMA Under Doubly Selective Channels Using Iterative Interference Cancellation Schemes For Wireless IoT Networks
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posted on 2022-01-05, 22:22 authored by Anis Amazigh HamzaAnis Amazigh Hamza, Iyad Dayoub, Ihsen Alouani, Abderrahmane AmroucheCell-edge users of the future cellular internet of things (IoT) with massive IoT sensors can suffer from extremely severe channel conditions, especially under very high-speed scenarios. In this paper, we present a performance improvement method for cell-edge users of multi-carrier modulation (MCM)-based non-orthogonal multiple access (NOMA) downlink systems. To this end, we consider the implementation of cooperative user relaying NOMA (CUR-NOMA) and derive its lower bound end-to-end bit error rate (E2E-BER) under doubly selective channels. In addition, the imperfect successive interference cancellation (SIC) process is analyzed, wherein two interference cancellation schemes are combined to remove the NOMA induced inter-user interference (IUI) and the doubly selective channel induced inter-carrier interference (ICI). Furthermore, numerical simulations are performed to prove the efficiency of the introduced schemes with imperfect channel state information (CSI) when compared to the theoretical perfect SIC with a perfect CSI case.
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Email Address of Submitting Author
anisamazighhamza@gmail.comORCID of Submitting Author
https://orcid.org/ 0000-0002-5181-0869Submitting Author's Institution
USTHB & UPHFSubmitting Author's Country
- Algeria