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- W2968896199 abstract "With the development of wireless communications and internet of things (IoT), non-orthogonal multiple access (NOMA) has been considered as one of effective schemes to meet the rapidly growing user access requirements. Two types of NOMA, i.e., NOMA-2000 and power-domain NOMA (PD-NOMA), have been proposed in recent years. The first one is a superposition of a set of orthogonal frequency division multiple access (OFDMA) signals and a set of spread-spectrum multicarrier-code division multiple access (MC-CDMA) signals while the second one is a direct superposition of a MC-CDMA signal and an OFDMA signal. This paper proposes a dynamic user grouping method for classifying users and then compares the performance between NOMA-2000 and PD-NOMA over Rayleigh fading channels. Simulation results show that the PD-NOMA can always exhibit lower bit error rate (BER) than the NOMA-2000 under different signal-to-noise ratios. Under the Rayleigh fading environment, the performance of the PD-NOMA after user grouping is better than that of NOMA-2000." @default.
- W2968896199 created "2019-08-22" @default.
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- W2968896199 date "2019-01-01" @default.
- W2968896199 modified "2023-10-11" @default.
- W2968896199 title "Dynamic User Grouping-Based NOMA Over Rayleigh Fading Channels" @default.
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- W2968896199 doi "https://doi.org/10.1109/access.2019.2934111" @default.
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