Articles with "ofdm noma" as a keyword



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Enhanced Power Allocation for Sum Rate Maximization in OFDM-NOMA VLC Systems

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Published in 2018 at "IEEE Photonics Technology Letters"

DOI: 10.1109/lpt.2018.2839094

Abstract: This letter investigates the power allocation problem for the downlink of an orthogonal frequency division multiple (OFDM)-based non-orthogonal multiple access visible light communication (NOMA-VLC) system. Unlike the commonly used two-user OFDM-NOMA VLC model, in this… read more here.

Keywords: sum rate; noma vlc; power; ofdm noma ... See more keywords
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Energy-Efficient Mobile Edge Computing in RIS-Aided OFDM-NOMA Relay Networks

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Published in 2023 at "IEEE Transactions on Vehicular Technology"

DOI: 10.1109/tvt.2022.3223903

Abstract: In this paper, the design of task offloading and computing strategy in a mobile edge computing (MEC) system deployed over a reconfigurable intelligent surface (RIS)-aided orthogonal frequency division multiplexing based non-orthogonal multiple access (OFDM-NOMA) relay… read more here.

Keywords: mobile edge; ofdm noma; energy; relay ... See more keywords
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Joint Sensing Duration Adaptation, User Matching, and Power Allocation for Cognitive OFDM-NOMA Systems

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Published in 2018 at "IEEE Transactions on Wireless Communications"

DOI: 10.1109/twc.2017.2777476

Abstract: In this paper, the non-orthogonal multiple access (NOMA) technology is integrated into cognitive orthogonal frequency-division multiplexing (OFDM) systems, called cognitive OFDM-NOMA, to boost the system capacity. First, a capacity maximization problem is considered in half-duplex… read more here.

Keywords: ofdm noma; cognitive ofdm; noma systems; power allocation ... See more keywords