Results 31 to 40 of about 85,658 (276)

Energy-Efficient Cooperative Spectrum Sensing Scheme Based on Spatial Correlation for Cognitive Internet of Things

open access: yesIEEE Access, 2020
Due to the negative impact from spatial correlation, spatially correlated cognitive radio (CR) based devices participating in cooperative spectrum sensing may be harmful to the detection performance.
Runze Wan   +3 more
doaj   +1 more source

Joint Cooperative Spectrum Sensing and MAC Protocol Design for Multi-channel Cognitive Radio Networks [PDF]

open access: yes, 2014
In this paper, we propose a semi-distributed cooperative spectrum sen sing (SDCSS) and channel access framework for multi-channel cognitive radio networks (CRNs).
Le, Long Bao, Tan, Le Thanh
core   +2 more sources

Sensing-Based Spectrum Sharing Method in Satellite-Terrestrial Network

open access: yes天地一体化信息网络, 2021
Considering the spatial possibility of opportunistic spectrum sharing, sensing-based spectrum sharing method ws applied in the satellite-terrestrial network.The sensing-throughput tradeoff problem was studied, and the throughput is a concave function of ...
Jing HU   +4 more
doaj   +2 more sources

Cooperative subcarrier sensing using antenna diversity based weighted virtual sub clustering [PDF]

open access: yes, 2016
The idea of cooperation and the clustering amongst cognitive radios (CRs) has recently been focus of attention of research community, owing to its potential to improve performance of spectrum sensing (SS) schemes.
Ghafoor, Abdul   +2 more
core   +1 more source

Research on the multiuser MIMO linear cooperative spectrum sensing in cognitive radio networks

open access: yesTongxin xuebao, 2012
The multiuser MIMO based linear cooperative spectrum sensing problem was investigated in cognitive radio system to improve the reliability of spectrum sensing.Both the local spectrum detecting strategy and global spectrum detecting strategy for multiuser
Yong-qiang HEI, Xiao-hui LI, Wen-tao LI
doaj   +2 more sources

Cooperative Full-Duplex Physical and MAC Layer Design in Asynchronous Cognitive Networks [PDF]

open access: yes, 2017
In asynchronous cognitive networks (CNs), where there is no synchronization between primary users (PUs) and secondary users (SUs), spectrum sensing becomes a challenging task.
Febrianto, Teddy   +2 more
core   +2 more sources

Disordered but rhythmic—the role of intrinsic protein disorder in eukaryotic circadian timing

open access: yesFEBS Letters, EarlyView.
Unstructured domains known as intrinsically disordered regions (IDRs) are present in nearly every part of the eukaryotic core circadian oscillator. IDRs enable many diverse inter‐ and intramolecular interactions that support clock function. IDR conformations are highly tunable by post‐translational modifications and environmental conditions, which ...
Emery T. Usher, Jacqueline F. Pelham
wiley   +1 more source

On the Impact of User Distribution on Cooperative Spectrum Sensing and Data Transmission with Multiuser Diversity [PDF]

open access: yes, 2011
In this thesis, we investigate the independent but not identically distributed (i.n.i.d.) situations for spectrum sensing and data transmission. In particular, we derive the false-alarm probability and the detection probability of cooperative spectrum ...
Rao, Anlei
core   +1 more source

Mechanisms of parasite‐mediated disruption of brain vessels

open access: yesFEBS Letters, EarlyView.
Parasites can affect the blood vessels of the brain, often causing serious neurological problems. This review explains how different parasites interact with and disrupt these vessels, what this means for brain health, and why these processes matter. Understanding these mechanisms may help us develop better ways to prevent or treat brain infections in ...
Leonor Loira   +3 more
wiley   +1 more source

Cooperative Spectrum Sensing Technique Based on Blind Detection Method [PDF]

open access: yes, 2016
Spectrum sensing is a key task for cognitive radio. Our motivation is to increase the probability of detection of spectrum sensing in cognitive radio.
Siddaiah, P. (P), Vijayalakshmi, B. (B)
core  

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