Results 1 to 10 of about 262,325 (158)

Evaluation of loop-mediated isothermal amplification (LAMP) assay for detection of aprV2 positive Dichelobacter nodosus in-field by secondary users [PDF]

open access: yesBMC Research Notes, 2019
Objective Dichelobacter nodosus is the primary aetiological agent of footrot in sheep. Ovine footrot causes considerable economic losses and substantial animal welfare issues in the Australian sheep industry. Current methods for detecting D.
Nickala Best   +3 more
doaj   +2 more sources

Accessible Capacity of Secondary Users [PDF]

open access: yesIEEE Transactions on Information Theory, 2014
42 pages, 12 figures, 2 tables; Submitted to IEEE Transactions on Information Theory on December, 2010, Revised on November ...
Baoming Bai, Xiujie Huang
exaly   +3 more sources

Cooperative spectrum sharing of multiple primary users and multiple secondary users

open access: yesDigital Communications and Networks, 2016
This paper proposes a multiple-input multiple-output (MIMO) based cooperative dynamic spectrum access (DSA) framework that enables multiple primary users (PUs) and multiple secondary users (SUs) to cooperate in spectrum sharing.
Hang Liu   +4 more
doaj   +2 more sources

Spectrum Pricing Games with Random Valuations of Secondary Users [PDF]

open access: yesIEEE Journal on Selected Areas in Communications, 2012
We analyze price competition among primary users in a Cognitive Radio Network (CRN), in which there are a random and unknown number of secondary users. In every slot, each primary has unused bandwidth with some probability, which it would like to lease to a secondary user, and must set a price for this bandwidth.
Gaurav Kasbekar, Saswati Sarkar
exaly   +2 more sources

Improved Resource Allocation Model for Reducing Interference Among Secondary Users in TV White Space for Broadband Services

open access: yesIEEE Access, 2022
In recent years, the Television White Space has attracted the interest of many researchers due to its propagation characteristics obtainable between 470MHz and 790MHz spectrum bands.
Marco P. Mwaimu   +4 more
doaj   +3 more sources

A Formula for Successful Transmission Probability in Opportunistic Networks Under Memory-Time Correlated Channel Availability

open access: yesIEEE Access, 2023
Dynamic Spectrum Access (DSA) technology in wireless Cognitive Radio Networks (CRNs) provides opportunistic access for unlicensed users, also known as Secondary Users (SUs), which can offer huge bandwidth to enable future wireless communication.
Sharhabeel H. Alnabelsi   +1 more
doaj   +1 more source

Impact of secondary user communication on security communication of primary user [PDF]

open access: yesSecurity and Communication Networks, 2015
AbstractCognitive radio network concept has been considered as a promising solution to improve the spectrum utilization. However, it may be vulnerable to security problems as the primary user (PU) and secondary user (SU) access the same resource.
Louis Sibomana   +2 more
openaire   +2 more sources

Improvement in the performance of mobile/hidden secondary users in multi‐user CRN [PDF]

open access: yesIET Communications, 2020
In a multi‐user cognitive radio network (CRN), mobile or hidden secondary users (SUs) are present. Conventionally, such SUs utilize rigid threshold value (λ) for spectrum sensing (SS). When these SUs perform SS, they receive poor quality signals from primary users.
Rakhi Khedkar, Rajendrakumar A. Patil
openaire   +1 more source

A multi-layer hyper-graph routing with jamming-awareness for improved throughput in full-duplex cognitive radio networks

open access: yesJournal of King Saud University: Computer and Information Sciences, 2022
There are differences between routing in traditional and in Cognitive Radio Networks (CRNs). The availability of channels, periodic spectrum sensing, jammers activity, are some of these differences, etc.
Sharhabeel H. Alnabelsi   +3 more
doaj   +1 more source

Maximum throughput of a secondary user cooperating with an energy-aware primary user [PDF]

open access: yes2014 12th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks (WiOpt), 2014
Accepted WiOpt ...
Ahmed El Shafie 0001   +2 more
openaire   +3 more sources

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