Results 41 to 50 of about 24,580,897 (275)
The 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
Optimizing Non-Orthogonal Multiple Access in Random Access Networks [PDF]
2020 IEEE 91st Vehicular Technology Conference (VTC2020-Spring), 2020 Non-orthogonal multiple access (NOMA) has been considered as a promising solution for improving the spectrum efficiency of next-generation wireless networks. In this paper, the performance of a p-persistent slotted ALOHA system in support of NOMA transmissions is investigated.
Ziru Chen +5 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
On Non-Orthogonal Multiple Access in Downlink
CoRR, 2016 Non orthogonal multiple access (NOMA) in the downlink is discussed in this letter. When combined with soft frequency reuse, NOMA is detrimental to user fairness by increasing the data rate of a near user at the cost of data rate of a far user.
openaire +2 more sources
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
Quantifying numerical dispersion in non-orthogonal FDTD meshes [PDF]
, 2002 Numerical electromagnetic models such as FDTD are widely used for the design and analysis of structures, including antennas. Numerical dispersion is one of the main sources of error that degrade the accuracy of the results-for each structure of interest,
Nilavalan, R, Railton, CJ, Craddock, IJ
core +1 more source
Exploiting Incremental Virtual Full Duplex Non-Orthogonal Multiple Access Systems
Information, 2022 This paper investigates the throughput performance of an incremental virtual full-duplex non-orthogonal multiple access (I-VFD-NOMA) communication system, where two energy harvesting (EH) enabled near users are willing to forward message for far user ...
Weidong Guo
doaj +1 more source
Cooperative Non-Orthogonal Multiple Access in Cognitive Radio [PDF]
IEEE 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 0002, Qiang Ni
openaire +2 more sources
UAV-Enabled Wireless Backhaul Networks Using Non-Orthogonal Multiple Access
IEEE Access, 2021 Owing to their potential mobility and agility, unmanned aerial vehicles (UAVs) have captured predominant interests in sustaining 5G wireless communication and beyond. In this paper, we scrutinize the downlink transmission of UAV-enabled wireless backhaul
Nadia Iradukunda +4 more
doaj +1 more source
Fluid Antenna System Enhancing Orthogonal and Non-Orthogonal Multiple Access [PDF]
, 2023 Fluid antenna system (FAS) has recently emerged as a promising candidate for the sixth generation (6G) wireless networks. Unlike traditional antenna systems (TASs), FAS is a new wireless communication system where the so-called ‘fluid’ antenna (FA) can ...
Xu, Hao +5 more
core +1 more source