Results 31 to 40 of about 18,963,725 (262)

A Deep Learning-Based Approach to Power Minimization in Multi-Carrier NOMA With SWIPT

open access: yesIEEE Access, 2019
Simultaneous wireless information and power transfer (SWIPT) and multi-carrier non-orthogonal multiple access (MC-NOMA) are promising technologies for future fifth generation and beyond wireless networks due to their potential capabilities in energy ...
Jingci Luo   +5 more
doaj   +1 more source

Median Access Control Protocols for Sensor Data Collection: A Review

open access: yesIEEE Access, 2020
Median Access Control (MAC) protocols are designed to mitigate collisions and enhance the energy efficiency for sensor data collection. This paper reviews two basic categories of MAC protocols.
Wenbo Zhao, Yifan Li, Bo Yan, Luping Xu
doaj   +1 more source

Investigation on Evolving Single-Carrier NOMA Into Multi-Carrier NOMA in 5G

open access: yesIEEE Access, 2018
Non-orthogonal multiple access (NOMA) is one promising technology, which provides high system capacity, low latency, and massive connectivity, to address several challenges in the fifth-generation wireless systems. In this paper, we first reveal that the
Jie Zeng   +6 more
doaj   +1 more source

Use of Time-Frequency Analysis and Neural Networks for Mode Identification in a Wireless Software-Defined Radio Approach

open access: yesEURASIP Journal on Advances in Signal Processing, 2004
The use of time-frequency distributions is proposed as a nonlinear signal processing technique that is combined with a pattern recognition approach to identify superimposed transmission modes in a reconfigurable wireless terminal based on software ...
Matteo Gandetto   +2 more
doaj   +1 more source

Optimized Low Density Superposition Modulation for 5G Mobile Multimedia Wireless Networks

open access: yesIEEE Access, 2019
The explosive growth of mobile multimedia services and applications are increasing the demand of access ability for the recent 5G networks. Non-orthogonal multiple access (NOMA) techniques have been recently proposed for 5G to improve access efficiency ...
Kun Lu, Chengxin Jiang
doaj   +1 more source

Analysis of Low Probability of Detection Capability for Chaotic Standard Map-Based FH-OFDMA System

open access: yesApplied Sciences, 2021
A frequency hopping orthogonal frequency division multiple access (FH-OFDMA) can provide low probability of detection (LPD) and anti-jamming capabilities to users against adversary detectors. To obtain an extreme LPD capability that cannot be provided by
Junwoo Jung   +4 more
doaj   +1 more source

Activation Detection Algorithms for Pattern Division Multiple Access Uplink Grant-free Transmission

open access: yesJournal of Physics: Conference Series, 2020
Abstract As a key technology of 5G, non orthogonal multiple access (NOMA) technology can significantly improve the spectrum efficiency compared with the traditional orthogonal multiple access technology. In addition, grant-free transmission technology can further reduce the transmission delay of the system and effectively improve the ...
Wanwei Tang   +5 more
openaire   +1 more source

Ovarian Sex Cord Stromal Tumors in Children and Adolescents—The European Standard Clinical Practice Recommendations

open access: yesPediatric Blood &Cancer, EarlyView.
ABSTRACT As part of the European Cooperative Study Group for Paediatric Rare Tumours initiative, we developed standard clinical practice guidelines for ovarian sex cord stromal tumors, based on comprehensive national and international cohort analyses, literature review, and a final expert consensus conference.
Dominik T. Schneider   +15 more
wiley   +1 more source

On the Performance of PDMA With Decode-and-Forward Relaying in Downlink Network

open access: yesIEEE Access, 2018
This paper studies the application of cooperative techniques for pattern division multiple access (PDMA) in downlink (DL) network. More particularly, the performance of joint decode-and-forward (DF) relaying and PDMA (DF-PDMA) is investigated over ...
Wanwei Tang   +4 more
doaj   +1 more source

How neighborhood environment modified the effects of power outages on multiple health outcomes in New York state?

open access: yesHygiene and Environmental Health Advances, 2022
Background: Although power outage (PO) is one of the most important consequences of increasing weather extremes and the health impact of POs has been reported previously, studies on the neighborhood environment underlying the population vulnerability in ...
Wangjian Zhang   +12 more
doaj   +1 more source

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