Articles with "noma system" as a keyword



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Optimized Power Allocation for a Cooperative NOMA System with SWIPT and an Energy-Harvesting User

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Published in 2020 at "International Journal of Electronics"

DOI: 10.1080/00207217.2020.1756432

Abstract: ABSTRACT This paper investigates the solution to an optimisation problem to minimise the total transmission power at the transmitter in a cooperative non-orthogonal multiple access (NOMA) system with simultaneous wireless information and power transfer (SWIPT)… read more here.

Keywords: noma system; power; energy harvesting; problem ... See more keywords
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Full-duplex cooperative NOMA system under impacts of residual SI and MAI

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Published in 2020 at "International Journal of Electronics"

DOI: 10.1080/00207217.2020.1818844

Abstract: ABSTRACT In this paper, we investigate the performance of a downlink cooperative non-orthogonal multiple access (C-NOMA) system with full-duplex decode-and-forward relaying, where a NOMA user with better channel operates as a full-duplex (FD) relay to… read more here.

Keywords: system; cooperative noma; impacts residual; noma ... See more keywords
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Physical Layer Security Performance Analysis of the FD-Based NOMA-VC System

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Published in 2019 at "IEEE Access"

DOI: 10.1109/access.2019.2936036

Abstract: In this paper, we consider the secrecy outage probability (SOP) of a cooperative non-orthogonal multiple access (NOMA) vehicular communication (VC) system, where the relay is working in either half-duplex (HD) or full-duplex (FD) mode. We… read more here.

Keywords: physical layer; system; layer security; performance ... See more keywords
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On the Achievable Spectral Efficiency of Spatial Modulation Aided Downlink Non-Orthogonal Multiple Access

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Published in 2017 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2017.2707068

Abstract: In this letter, a novel spatial modulation aided non-orthogonal multiple access (SM-NOMA) system is proposed. We use mutual information (MI) to characterize the achievable spectral efficiency (SE) of the proposed SM-NOMA system. Due to the… read more here.

Keywords: multiple access; spatial modulation; non orthogonal; modulation aided ... See more keywords
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Energy Efficiency–Delay Tradeoff for a Cooperative NOMA System

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Published in 2019 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2019.2900320

Abstract: The tradeoff between the energy efficiency (EE) and delay problem in the cooperative relaying system is studied by using non-orthogonal multiple access (NOMA) in this letter. To obtain an efficiency tradeoff between EE and delay,… read more here.

Keywords: energy efficiency; system; cooperative noma; noma system ... See more keywords

Ergodic Performance of Downlink Untrusted NOMA System With Imperfect SIC

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Published in 2022 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2021.3126746

Abstract: In this letter, the ergodic performance of a non-orthogonal multiple access (NOMA) system with untrusted users and imperfect successive interference cancellation based decoding is manifested. Closed-form expressions of the ergodic rate and the ergodic secrecy… read more here.

Keywords: performance downlink; ergodic performance; downlink untrusted; noma system ... See more keywords
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Index Modulation for STAR-RIS Assisted NOMA System

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Published in 2023 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2022.3223968

Abstract: In this letter, we first incorporate the concept of index modulation (IM) into simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) aided non-orthogonal multiple access (NOMA) system to improve the spectral efficiency. Specifically, the proposed… read more here.

Keywords: star ris; noma system; star;
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Average Rate Maximization for Mobile STAR-RIS-Aided NOMA System

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Published in 2023 at "IEEE Communications Letters"

DOI: 10.1109/lcomm.2023.3261442

Abstract: Simultaneously transmitting and reflecting reconfigurable intelligent surface (STAR-RIS) has been regarded as a revolutionary technology for the sixth generation (6G) mobile networks. This letter investigates the transmission scheme for mobile STAR-RIS-assisted non-orthogonal multiple access (NOMA)… read more here.

Keywords: star ris; noma system; star; mobile star ... See more keywords
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QoS-Based Robust Power Optimization for SWIPT NOMA System With Statistical CSI

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Published in 2019 at "IEEE Transactions on Green Communications and Networking"

DOI: 10.1109/tgcn.2019.2914736

Abstract: Simultaneous wireless information and power transfer (SWIPT) that can prolong the lifetime of energy-limited wireless users has drawn considerable attention. In this paper, the power consumption optimization problem is investigated in SWIPT non-orthogonal multiple access… read more here.

Keywords: optimization; swipt; power; noma system ... See more keywords
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Joint Energy-Efficient Power Allocation and Beamforming for Uplink mmWave-NOMA System

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Published in 2020 at "IEEE Transactions on Vehicular Technology"

DOI: 10.1109/tvt.2020.3007470

Abstract: In this paper, we study the joint power allocation (PA) and beamforming (BF) design problem to maximize the energy efficiency (EE) for an uplink millimeter-wave (mmWave) system with non-orthogonal multiple access (NOMA). To track this… read more here.

Keywords: system; mmwave noma; allocation beamforming; power allocation ... See more keywords

Novel Mode Selection Schemes for Buffer-Aided Cooperative NOMA System

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Published in 2023 at "IEEE Transactions on Vehicular Technology"

DOI: 10.1109/tvt.2022.3205806

Abstract: This paper investigates a cooperative non-orthogonal multiple access (C-NOMA) system, where the NOMA and buffer-aided cooperative transmission modes between the users are integrated. Two novel mode selection schemes are proposed, which adaptively select the NOMA… read more here.

Keywords: aided cooperative; mode selection; novel mode; selection schemes ... See more keywords