Results 11 to 20 of about 184,031 (288)
Non-Orthogonal Frequency Division Multiple Access [PDF]
2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring), 2020 This paper proposes a frequency-domain multiple user access scheme termed non-orthogonal frequency division multiple access (NoFDMA), which maintains the same data rate per user while allowing more users to access via non-orthogonal user overlapping in a given spectral band.
Tongyang Xu, Izzat Darwazeh
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Controlled Power Cooperative Non Orthogonal Multiple Access Relay Networks [PDF]
ElectricaRecent work related to cooperative communication and power allocation has attracted much attention among researchers. This paper compares orthogonal multiple access (OMA), non orthogonal multiple access (NOMA), and cooperative NOMA.
Mario Ligwa, Vipin Balyan
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Uplink non-orthogonal multiple access in heterogeneous networks: A review of recent advances and open research challenges [PDF]
International Journal of Distributed Sensor Networks, 2022 Fifth-generation wireless communications provide several benefits, including high throughput, lower latency, massive connectivity, considerable improvement in the number of users, higher base station capacity, and achieved quality of service.
Bilal Ur Rehman +6 more
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Cooperative Non-Orthogonal Multiple Access With Physical Layer Network Coding [PDF]
IEEE Access, 2019 Physical layer network coding (PNC) has been proposed for information exchange between a pair of users assisted by a relay. However, the spectral efficiency of PNC reduces when the number of user pairs increases due to the requirement of orthogonal ...
Chun Yeen Ho, Chee Yen Leow
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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 Pfletschinger, Monica Navarro
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Joint time and beam domain non-orthogonal multiple access [PDF]
Tongxin xuebao, 2021 In order to improve the system’s ability to accommodate connected devices, a joint time and beam domain non-orthogonal multiple access (NOMA) scheme was proposed, which was suitable for millimeter wave massive multiple-input multiple-output (MIMO ...
Zhaoyang ZHANG +3 more
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Non-Orthogonal Multiple Access for Unmanned Aerial Vehicle Assisted Communication [PDF]
IEEE Access, 2018 The future wireless networks promise to provide ubiquitous connectivity to a multitude of devices with diversified traffic patterns wherever and whenever needed.
Muhammad Farhan Sohail +2 more
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Performance improvement of non-orthogonal multiple access scheme using code division multiplexing [PDF]
International Journal of Distributed Sensor Networks, 2017 Currently, the standardization of fifth-generation mobile communication system (5G), which realizes 10 Gbps transmission, is in progress. In mobile communications, it is generally difficult to perform high-capacity transmission because of channel fading.
Hiroki Kitagawa, Eiji Okamoto
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Joint time and power allocation for uplink cooperative non-orthogonal multiple access based massive machine-type communication Network [PDF]
International Journal of Distributed Sensor Networks, 2018 Non-orthogonal multiple access is an essential promising solution to support large-scale connectivity required by massive machine-type communication scenario defined in the fifth generation (5G) mobile communication system.
Shujun Han +3 more
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Trellis-Coded Non-Orthogonal Multiple Access [PDF]
IEEE Wireless Communications Letters, 2020 In this letter, we propose a trellis-coded nonorthogonal multiple access (NOMA) scheme. The signals for different users are produced by trellis coded modulation (TCM) and then superimposed on different power levels. By interpreting the encoding process via the tensor product of trellises, we introduce a joint detection method based on the Viterbi ...
Xun Zou, Mehdi Ganji, Hamid Jafarkhani
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