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Enabling User Relaying In MCM-NOMA Under Doubly Selective Channels Using Iterative Interference Cancellation Schemes For Wireless IoT Networks

Archive ouverte : Article de revue

Hamza, Anis Amazigh | Dayoub, Iyad | Alouani, Ihsen | Amrouche, Abderrahmane

Edité par HAL CCSD ; IEEE

International audience. Cell-edge users of future cellular internet of things (IoT) sensor networks can suffer from extremely severe channel conditions, especially under mobility with high speeds, i.e., doubly selective channels. This paper presents a performance improvement method for IoT cell-edge users downlink transmission under doubly selective channels. To this end, we consider the implementation of multi-carrier modulation (MCM)-based cooperative user relaying non-orthogonal multiple access (CUR-NOMA) combined with two interference cancellation schemes and derive the lower bound of the E2E-BER of the proposed scheme. The obtained results showed that the proposed scheme requires a low computational complexity and significantly improves the systems performance even if the channel state information (CSI) is imperfect.

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