Results 31 to 40 of about 292,760 (265)
Outage Analysis and Power Allocation in Uplink Non-Orthogonal Multiple Access Systems [PDF]
, 2017 We propose a tractable expression for the outage probability in single-cell uplink non-orthogonal multiple access (NOMA) systems serving an arbitrary number of users. The expression is obtained by approximating the inter-user interference using a shifted-
Mahsa Derakhshani +5 more
core +2 more sources
EURASIP 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
IEEE 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
Applied 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
Journal 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
On the Performance of PDMA With Decode-and-Forward Relaying in Downlink Network
IEEE 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
Hygiene 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
Massively Concurrent Non-Orthogonal Multiple Access for 5G Networks and Beyond
IEEE Access, 2019 We propose a new signal spreading-based non-orthogonal multiple access (NOMA) schemes that exploits the frame-theoretic design principles to enable the efficient concurrence of multiple users in both downlink (DL) and uplink (UL).
Razvan-Andrei Stoica +3 more
doaj +1 more source
A Bibliometric Analysis of Publications in Uremic Toxins From 1991 to 2024
Therapeutic Apheresis and Dialysis, EarlyView.ABSTRACT Background Uremic toxins are a growing area of research in nephrology, with significant implications in the progression and treatment of chronic kidney disease (CKD) and the management of end‐stage kidney disease (ESKD). This bibliometric analysis aims to evaluate the global research trends, key contributors, and the impact of publications in ...
Yuh‐Shan Ho +7 more
wiley +1 more source
Multi-Channel Joint Forecasting-Scheduling for the Internet of Things
IEEE Access, 2020 We develop a methodology for Multi-Channel Joint Forecasting-Scheduling (MC-JFS) targeted at solving the Medium Access Control (MAC) layer Massive Access Problem of Machine-to-Machine (M2M) communication in the presence of multiple channels, as found in ...
Volkan Rodoplu +3 more
doaj +1 more source