Results 31 to 40 of about 138,567 (160)

Cooperative Spectrum Sensing With Data Mining of Multiple Users’ Historical Sensing Data

open access: yesIEEE Access, 2016
Under the case of exponentially growth of wireless services and the scarcity of spectrum resources, cognitive radio (CR) has been proposed to access licensed channels opportunistically, and thus improve spectrum utilization.
Xin-Lin Huang   +4 more
doaj   +1 more source

Cooperative distributed sequential spectrum sensing

open access: yes2011 National Conference on Communications (NCC), 2011
This paper has been withdrawn by the author due to the submission of detailed journal version of the same paper, to ...
S, Jithin K   +2 more
openaire   +2 more sources

Matched Stochastic Resonance Enhanced Underwater Passive Sonar Detection under Non-Gaussian Impulsive Background Noise

open access: yesSensors
Remote passive sonar detection with low-frequency band spectral lines has attracted much attention, while complex low-frequency non-Gaussian impulsive noisy environments would strongly affect the detection performance.
Haitao Dong   +3 more
doaj   +1 more source

Optimization of Spectrum Utilization in Cooperative Spectrum Sensing

open access: yesSensors, 2019
This paper presents an analytical framework for the probability of spectrum hole utilization (PSHU) of a cognitive radio system with soft cooperative spectrum sensing (CSS) under a practical consideration of fixed frame structure. In practical systems, the length of a time-frame is generally fixed, where the time-frame consists of sensing, reporting ...
Mohsin Ali, Haewoon Nam
openaire   +3 more sources

Research of double-threshold spectrum sensing algorithm based on D-S theory

open access: yesGong-kuang zidonghua, 2013
In view of problem that traditional double-threshold spectrum sensing algorithm cannot make full use of information of sensing users between two thresholds, the paper proposed a double-threshold spectrum sensing algorithm based on D-S theory. When signal
WANG Meng-dong   +3 more
doaj   +1 more source

Energy efficiency in cognitive radio network using cooperative spectrum sensing based on hybrid spectrum handoff

open access: yesEgyptian Informatics Journal, 2022
Rapid spectrum usage in wireless networks may reduce energy efficiency, requiring cognitive radio networks to be more efficient than conventional ones.
Kaleem Arshid   +7 more
doaj   +1 more source

A spatial diversity cooperative spectrum sensing system based on blockchain and deep learning

open access: yesDianxin kexue, 2023
Cooperative spectrum sensing is a key technology in cognitive radio.A data-driven intelligent cooperative spectrum sensing system was proposed with spatial diversity running on a smart contract to address issues of security, privacy, incentive and hidden
Zhongshan XIAO, Chunqi WANG, Daquan FENG
doaj   +2 more sources

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

Improvement of energy conservation using blockchain-enabled cognitive wireless networks for smart cities

open access: yesScientific Reports, 2022
In Smart Cities’ applications, Multi-node cooperative spectrum sensing (CSS) can boost spectrum sensing efficiency in cognitive wireless networks (CWN), although there is a non-linear interaction among number of nodes and sensing efficiency.
Shalli Rani   +3 more
doaj   +1 more source

Achievable performance of Bayesian compressive sensing based spectrum sensing

open access: yes2014 IEEE International Conference on Ultra-WideBand (ICUWB), 2014
In wideband spectrum sensing compressive sensing approaches have been used at the receiver side to decrease the sampling rate if the wideband signal can be represented as sparse in a given domain. While most studies consider the reconstruction of primary user's signal accurately it is indeed more important to analyze the presence or absence of the ...
Basaran, Mehmet   +2 more
openaire   +3 more sources

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