Results 21 to 30 of about 91,357 (154)

Cooperative Non-Orthogonal Multiple Access for Beyond 5G Networks

open access: yesIEEE Open Journal of the Communications Society, 2021
In the beyond 5G networks, extraordinary demands for data rates and capacity are to be met. A possible candidate to address these challenges is Non-Orthogonal Multiple Access (NOMA) technique, which leads to higher diversity gains and massive ...
Abbas Ahmed   +3 more
doaj   +1 more source

Cache-Aided Non-Orthogonal Multiple Access [PDF]

open access: yes2018 IEEE International Conference on Communications (ICC), 2018
In this paper, we propose a novel joint caching and non-orthogonal multiple access (NOMA) scheme to facilitate advanced downlink transmission for next generation cellular networks. In addition to reaping the conventional advantages of caching and NOMA transmission, the proposed cache-aided NOMA scheme also exploits cached data for interference ...
Xiang, Lin   +5 more
openaire   +2 more sources

Cooperative Non-Orthogonal Multiple Access in Cognitive Radio [PDF]

open access: yesIEEE Communications Letters, 2016
This letter studies the application of non-orthogonal multiple access to a downlink cognitive radio (termed CR-NOMA) system. A new cooperative transmission scheme is proposed aimed at exploiting the inherent spatial diversity offered by the CR-NOMA system. The closed-form analytical results are developed to show that the cooperative transmission scheme
Lu Lv, Jian Chen, Qiang Ni
openaire   +2 more sources

Non-orthogonal Multiple Access Enabled Scalable Video Multicast in HetNets [PDF]

open access: yesJisuanji kexue, 2021
In this paper,a resource management framework is presented for non-orthogonal multiple access (NOMA)-enhanced scalable video coding (SVC) multicast in heterogeneous networks (HetNets).In this framework,radio spectrum slicing for different base stations ...
JI Xiao-xiang, SHEN Hang, BAI Guang-wei
doaj   +1 more source

Cooperative Non-Orthogonal Multiple Access with Energy Harvesting

open access: yesInformation, 2017
In this paper, we analyze the outage probability of an amplify-and-forward (AF) cooperative non-orthogonal multiple access (NOMA) model in multi-relay multiuser networks.
Weidong Guo, Yunfeng Wang
doaj   +1 more source

An Improved Network-Coded Multiple Access for Power-Balanced Non-Orthogonal Multiple Access

open access: yesIEEE Access, 2018
A recently proposed network-coded multiple access (NCMA), consisting of XOR-based channel decoding and multi-user complete decoding (MUD-CD), can significantly improve throughput over conventional successive interference cancellation (SIC) decoding under
Pingping Chen   +4 more
doaj   +1 more source

Non-orthogonal multiple access wireless energy harvesting cooperative system

open access: yesDianxin kexue, 2021
Non-orthogonal multiple access (NOMA) has recently attracted wide attention as a promising multiple access technology adopted in 5G cellular networks.In order to improve the spectrum efficiency, coverage and anti-noise performance of NOMA technology ...
Xiaoping JIN   +3 more
doaj   +2 more sources

High Reliable Uplink Transmission Methods in GEO–LEO Heterogeneous Satellite Network

open access: yesApplied Sciences, 2023
As a significant component of non-terrestrial networks, satellite communication has gradually evolved into a heterogeneous topology where the network nodes are classified as low Earth orbit (LEO) and geostationary Earth orbit (GEO) nodes. Considering the
Guoyan Li   +4 more
doaj   +1 more source

Feasibility analysis of non-orthogonal waveforms for multiple input multiple output passive radar application

open access: yesThe Journal of Engineering, 2019
New non-orthogonal multiple access technology is proposed with the development of 5G, which is expected to support higher spectrum efficiency and massive terminal access, it enables the communication system to achieve better bit error rate performance ...
Qing Wang   +3 more
doaj   +1 more source

Secrecy Sum Rate Maximization in Non-orthogonal Multiple Access [PDF]

open access: yesIEEE Communications Letters, 2016
Non-orthogonal multiple access (NOMA) has been recognized as a promising technique for providing high data rates in 5G systems. This letter is to study physical layer security in a single-input single-output (SISO) NOMA system consisting of a transmitter, multiple legitimate users and an eavesdropper.
Zhang, Yi   +3 more
openaire   +3 more sources

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