Results 21 to 30 of about 85,911 (275)

Supplementary Material to “Distributed Consensus-based Weight Design for Cooperative Spectrum Sensing” [PDF]

open access: yes, 2015
—This material is a supplement to the paper “Distributed Consensus-based Weight Design for Cooperative Spectrum Sensing”. Section 1 offers related literature review on cooperative spectrum sensing and consensus algorithms.
Chen, Yingying   +5 more
core   +2 more sources

Cognitive node selection and assignment algorithms for weighted cooperative sensing in radar systems [PDF]

open access: yes, 2009
For the radar spectrum to be shared efficiently a good sensing capability within a secondary cognitive communication system is required. In this paper, the swept radar's rotation mechanism is explored to improve the sensing performance.
Doufexi, A   +3 more
core   +2 more sources

Advanced Energy Detector Based Cooperative Spectrum Sensing In Cognitive Networks

open access: yesMATEC Web of Conferences, 2016
Cognitive radio is a befitting hopeful technology for future. Spectrum sensing is the most critical function of cognitive radio. Most of the spectrums sensing processes proposed earlier become impractical at lower signal to noise ratio conditions.
Ritu, Seehra Ameeta
doaj   +1 more source

A Low-Overhead Energy Detection Based Cooperative Sensing Protocol for Cognitive Radio Systems

open access: yes, 2009
Cognitive radio and dynamic spectrum access represent a new paradigm shift in more effective use of limited radio spectrum. One core component behind dynamic spectrum access is the sensing of primary user activity in the shared spectrum.
Lau, Vincent K. N.   +2 more
core   +3 more sources

Spectrum Sharing between Cooperative Relay and Ad-hoc Networks: Dynamic Transmissions under Computation and Signaling Limitations

open access: yes, 2011
This paper studies a spectrum sharing scenario between a cooperative relay network (CRN) and a nearby ad-hoc network. In particular, we consider a dynamic spectrum access and resource allocation problem of the CRN.
Li, Yunzhou   +4 more
core   +1 more source

Energy efficient scheme based on simultaneous transmission of the local decisions in cooperative spectrum sensing [PDF]

open access: yes, 2016
A common concern regarding cooperative spectrum sensing (CSS) schemes is the occupied bandwidth and the energy consumption during the transmissions of sensing information to the fusion center over the reporting control channels.
Aquino, Guilherme Pedro   +2 more
core   +1 more source

Overhead Reduction in Cooperative Spectrum Sensing Via Sequential Detection in Cognitive Radio Networks Under Bandwidth Constraint [PDF]

open access: yesJournal of Intelligent Procedures in Electrical Technology, 2014
Reliable and efficient spectrum sensing plays an important role in cognitive radio networks. On the other hand, accurate and fast sensing of spectrum is the main function of a cognitive radio for cognitive users to avoid harmful interference in licensed ...
Samira Torabi   +2 more
doaj  

Spatial-Spectral Joint Detection for Wideband Spectrum Sensing in Cognitive Radio Networks

open access: yes, 2008
Spectrum sensing is an essential functionality that enables cognitive radios to detect spectral holes and opportunistically use under-utilized frequency bands without causing harmful interference to primary networks.
Cui, Shuguang   +3 more
core   +2 more sources

Consensus-Based Distributive Cooperative Spectrum Sensing for Mobile Ad Hoc Cognitive Radio Networks

open access: yesInternational Journal of Distributed Sensor Networks, 2013
Cognitive radio network (CRN) is an intelligent network that provides solution to underutilization of spectrum band by detecting spectrum holes. For this purpose, certain important tasks including spectrum sensing, spectrum analysis, and spectrum ...
Anam Raza   +3 more
doaj   +1 more source

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

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