Results 41 to 50 of about 498,835 (335)
IEEE Transactions on Wireless Communications, 2022 Due to the emergence of non-terrestrial platforms with extensive coverage, flexible deployment, and reconfigurable characteristics, the hybrid satellite-aerial-terrestrial networks (HSATNs) can accommodate a great variety of wireless access services in ...
Xiaokai Zhang +5 more
semanticscholar +1 more source
Reconfigurable Intelligent Surface-Assisted Non-Orthogonal Multiple Access
IEEE Transactions on Wireless Communications, 2021 Reconfigurable intelligent surface (RIS) is a revolutionary technology to achieve spectrum-, energy-, and cost-efficient wireless networks. This paper considers an RIS-assisted downlink non-orthogonal-multiple-access (NOMA) system.
Gang Yang +3 more
semanticscholar +1 more source
RIS Enhanced Massive Non-Orthogonal Multiple Access Networks: Deployment and Passive Beamforming Design [PDF]
IEEE Journal on Selected Areas in Communications, 2020 A novel framework is proposed for the deployment and passive beamforming design of a reconfigurable intelligent surface (RIS) with the aid of non-orthogonal multiple access (NOMA) technology.
Xinyu Liu +3 more
semanticscholar +1 more source
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 ...
Ting Qi +3 more
openaire +2 more sources
Polar coded non-orthogonal multiple access [PDF]
2016 IEEE International Symposium on Information Theory (ISIT), 2016 In this paper, polar codes are first applied in non-orthogonal multiple access (NOMA) and the channel polarization idea is extended to NOMA, which is a major multiple access technique in 5G systems. The polar coded NOMA (PC-NOMA) scheme is proposed, whereby the NOMA channel is decomposed into a series of binary-input channels under a two-stage channel ...
Jincheng Dai +3 more
openaire +3 more sources
Frequency-domain precoding for single carrier frequency-division multiple access [PDF]
, 2009 At present there is considerable interest in the use of single carrier frequency-division multiple access. This interest is justified by the inherent single carrier structure of the SC-FDMA scheme, which is more robust against phase noise and has a lower
Nix, AR, Noune, MB
core +1 more source
Non-Orthogonal Multiple Access and Network Slicing: Scalable Coexistence of eMBB and URLLC [PDF]
IEEE Vehicular Technology Conference, 2021 The 5G systems feature three generic services: enhanced Mobile BroadBand (eMBB), massive Machine-Type Communications (mMTC) and Ultra-Reliable and Low-Latency Communications (URLLC).
E. N. Tominaga +4 more
semanticscholar +1 more source
An Improved Network-Coded Multiple Access for Power-Balanced Non-Orthogonal Multiple Access
IEEE 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
IEEE Access, 2021 Mobile communication systems are always in continuous evolution due to the demands of the end-users using this technology. Therefore, before the possible launch of 5G, some technologies have opened the way to the new mobile communication system. The need
A. F. M. Shahen Shah +4 more
doaj +1 more source
Unified MIMO-multicarrier designs: a space–time shift keying approach [PDF]
, 2015 A survey and tutorial is provided on the subject of multiple-input multiple-output (MIMO) multicarrier (MC) systems relying on the space-time shift keying concept.
Sugiura, Shinya +3 more
core +1 more source