Results 41 to 50 of about 91,357 (154)
Beamforming Design for Downlink Non-Orthogonal Multiple Access Systems
IEEE Access, 2018 This paper investigates the beamforming design for multiple-input single-output nonorthogonal multiple access (NOMA) downlink systems. The NOMA beamforming design is formulated as a weighted sum rate maximization (WSRM) problem with decoding order ...
Fusheng Zhu +4 more
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Joint User Clustering and Beamforming in Non-Orthogonal Multiple Access Networks
IEEE Access, 2020 The demand for higher data rate in wireless networks continues to grow, however the wireless spectrum cannot meet ever-increasing demands. Non-orthogonal Multiple Access (NOMA) technology is attracting attentions to overcome the lack of resource spectrum
Ha-Ryung Kim, Jiasi Chen, Jongwon Yoon
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Non-Orthogonal Multiple Access With Improper Gaussian Signaling
IEEE Journal of Selected Topics in Signal Processing, 2019 Improper Gaussian signaling (IGS) helps to improve the throughput of a wireless communication network by taking advantage of the additional degrees of freedom in signal processing at the transmitter. This paper exploits IGS in a general multiuser multi-cell network, which is subject to both intra-cell and inter-cell interference.
Hoang Duong Tuan +4 more
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Optimum Fairness for Non-Orthogonal Multiple Access [PDF]
2018 IEEE/CIC International Conference on Communications in China (ICCC), 2018 This paper focuses on the fairness issue in non-orthogonal multiple access (NOMA) and investigates the optimization problem that maximizes the worst user's achievable rate. Unlike previous studies, we derive a closed-form expression for the optimal value and solution, which are related to Perron-Frobenius eigenvalue and eigenvector of a defined ...
Qi, Ting +3 more
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IEEE Open Journal of Vehicular TechnologyFuture drone-enabled Internet-of-Things (IoT) wireless networks have attracted considerable attention from industry and academia. Future drone-enabled IoT wireless networks are expected to enable the Internet of Everything and provide services with ...
Hazim Shakhatreh +2 more
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IEEE Access Special Section Editorial: Non-Orthogonal Multiple Access for 5G Systems
IEEE Access, 2018 Non-orthogonal multiple access (NOMA) has been recently recognized as a promising multiple access technique to significantly improve the spectral efficiency of mobile communication networks. The key idea of NOMA is to encourage spectrum sharing, which is
Daniel Benevides Da Costa +5 more
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Multiple Access in Cognitive Radio Networks: From Orthogonal and Non-Orthogonal to Rate-Splitting
IEEE Access, 2021 Due to the increasingly complicated communication scenarios and network architectures as well as growing traffic demands for high speed connectivity, dynamic spectrum allocation in fifth generation (5G) networks becomes insufficient to guarantee the ...
Safaa Gamal +4 more
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Non‐orthogonal multiple access without channel state information for similar channel conditions
Electronics Letters, 2019 A downlink non‐orthogonal multiple access with QPSK input constellations based on virtual channel optimisation is presented to address the similar channel conditions scenario.
Wenlong Xia +3 more
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Non-Orthogonal Multiple Access for Vehicular Communication [PDF]
2018 15th International Symposium on Wireless Communication Systems (ISWCS), 2018 In this paper, we establish a simple model for the exchange of messages in a vehicular network and we consider fundamental limits on the achievable data rate. For a vehicular network, the exchange of data with other nearby vehicles is particularly important for traffic safety, e.g.
Stephan Pfietschinger, Monica Navarro
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Joint power control and user grouping for uplink power domain non-orthogonal multiple access
International Journal of Distributed Sensor Networks, 2021 Orthogonal multiple access schemes based on assignment of communication resource blocks among multiple contenders, although widely available, still necessitate an upper limit on the number of concurrent users for minimization of multiple-user ...
Bilal Ur Rehman +6 more
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