Results 91 to 100 of about 498,835 (335)
Non-Orthogonal Multiple Access for Next-Generation Satellite Systems: Flexibility Exploitation and Resource Optimization [PDF]
, 2022 In conventional satellite communication systems, onboard resource management follows pre-design approaches with limited flexibility. On the one hand, this can simplify the satellite payload design.
WANG, Anyue
core
FEBS Open Bio, EarlyView.This protocol paper outlines methods to establish the success of a time‐resolved serial crystallographic experiment, by means of statistical analysis of timepoint data in reciprocal space and models in real space. We show how to amplify the signal from excited states to visualise structural changes in successful experiments.
Jake Hill +4 more
wiley +1 more source
Joint time and beam domain non-orthogonal multiple access
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
doaj +2 more sources
Adaptive Clustering of Users in Power Domain NOMA
Sensors, 2023 By enabling multiple non-orthogonal transmissions, power domain non-orthogonal multiple access (PD-NOMA) potentially increases a system’s spectral efficiency.
Yuri P. Santos, Luiz F. Q. Silveira
doaj +1 more source
Wireless-Powered Communications With Non-Orthogonal Multiple Access [PDF]
IEEE Transactions on Wireless Communications, 2016 We study a wireless-powered uplink communication system with non-orthogonal multiple access (NOMA), consisting of one base station and multiple energy harvesting users. More specifically, we focus on the individual data rate optimization and fairness improvement and we show that the formulated problems can be optimally and efficiently solved by either ...
Panagiotis D. Diamantoulakis +3 more
openaire +2 more sources
FEBS Open Bio, EarlyView.Activation of the mitochondrial protein OXR1 increases pSyn129 αSynuclein aggregation by lowering ATP levels and altering mitochondrial membrane potential, particularly in response to MSA‐derived fibrils. In contrast, ablation of the ER protein EMC4 enhances autophagic flux and lysosomal clearance, broadly reducing α‐synuclein aggregates.
Sandesh Neupane +11 more
wiley +1 more source
Non-orthogonal multiple access wireless energy harvesting cooperative system
Dianxin 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
Non-Orthogonal Multiple Access Technology for 5G Systems
Dianxin kexue, 2015 To meet the 5G requirements on spectral efficiency and number of connections，non-orthogonal multiple access（NMA）technology is becoming an important candidate technology.It was shed light on how NMA can be used to further improve spectral efficiency over ...
Qi Bi, Lin Liang, Shan Yang, Peng Chen
doaj +2 more sources
Performance of Generalized Multicarrier DS-CDMA Using Various Chip Waveforms [PDF]
, 2003 In this letter, we extend our investigation of generalized multicarrier direct-sequence code-division multiple access by considering two additional types of chip waveforms, namely, the time-domain half-sine and raised-cosine chip waveforms, in addition ...
Lie-Liang Yang +3 more
core +1 more source
Hybrid Cooperative Spectrum Sharing Protocols Based on OMA and NOMA in Cognitive Radio Networks
Applied Sciences, 2022 In cognitive radio networks (CRNs), the performance of the primary users (PUs) may suffer adverse effects from the secondary users (SUs) if the spectrum of PUs is haphazardly shared with SUs.
Suoping Li +3 more
doaj +1 more source