Cognitive Radio (CR)
Spectrum Sensing and Security in Cognitive Radio
... It can be seen from (3) that for p = 2, W reduces to statistics corresponding to the conventional energy detector. In a cooperative sensing scheme, multiple CRs exist in a cognitive radio network such that ...
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Spectrum Handoff in Cognitive Radio Networks: A Survey
... Cognitive radio (CR) is a promising solution to improve the spectrum utilization by enabling unlicensed users to exploit the spectrum in an opportunistic ...in cognitive radio networks is to ...
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Enhanced Energy Detection Technique for Cognitive Radio
... on cognitive radio systems. Cognitive radio is a resource sharing strategy which allows the licensed owner to share part of his licensed spectrum with a rental system (RS), cognitive ...
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Adaptive Spectrum Sensing in Cognitive Radio Networks
... Cognitive radio is a new method for executing radio communications which takes into consideration more efficient use of spectrum [1]. It senses the spectral environment over a range of frequency ...
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Hypernetworks based Radio Spectrum Profiling in Cognitive Radio Networks
... Radio spectrum is a very valuable but scarce resource, especially when considering the overall picture of the existing wireless communication systems. However, this resource has not been utilized in the most ...
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Research and Analysis on Cognitive Radio Network Security
... to radio business ...the radio frequency band has tendency to be ...improvement. Cognitive Radio (CR) is put forward to solve this problem ...of radio equipment with independent to find ...
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Quality of Service Provisioning in Cognitive Radio Network
... The paper proposed an algorithm using fuzzy inference system that assesses the impact of signal-strength, bandwidth and user-mobility on QoS in cognitive radio. The analysis of the proposed algorithm is ...
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Realisation of Cognitive Radio: Issues and Challenges
... sustained. Cognitive radio (CR) is a future technology initiated by many research organizations and academic institutions to increase the spectrum utilization of underutilized spectrum channels to ...
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Spectrum Sensing for Tactical Cognitive Radio
... of Radio Frequency ...tactical radio that can dynamically sense, classify and coordinate access to the spectrum for more improved performance and robust ...operations. Cognitive Radio(CR) ...
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An Extensive Review on Cognitive Radio Networks
... Despite the fact that the call handoff plans have been researched altogether in cell systems, there exist numerous tests that must be examined for the improvement of range handover techniques.[1,2] The range handover ...
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Spectrum Sensing Techniques and Cognitive Radio System
... The two tiers of users in the cognitive radio model are Primary Users (PU) and Secondary Users (SU). PU are licensed users who have the rights of priority in using certain frequency band for communications ...
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A Survey of Cognitive Radio Network Techniques and Architecture
... Spectrum sensing and analysis: Cognitive radio can detect the white space by using Spectrum sensing and analysis techniques. When primary user is not using a portion of frequency band then by using Spectrum ...
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Learning and Reasoning in Cognitive Radio Networks
... a cognitive network scenario is the concept of delayed ...the cognitive radio literature focuses on the maximization of the immediate reward, whereas the RL paradigm aims at optimizing the long term ...
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Recon UWB Antenna for Cognitive Radio
... Cognitive radio (CR), unlike conventional radio communication systems, can change its parameters such as carrier frequency, modulation or transmit power when interacts with environment which detects ...
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Applications and Opportunities for Cognitive Radio and Networks
... Cognitive radio (CR) is a promising technology to solve inefficiencies in spectrum usage in the network generation of wireless systems. In CR networks, each mobile user has the ability to intelligently ...
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Spectrum sharing in cognitive radio networks
... the second scenario, where the spectrum usage is relatively low over time, the spec- trum efficiency can be improved by increasing the access efficiency i.e. allowing access of unlicensed (secondary) devices to the ...
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Antenna Selection in MIMO Cognitive Radio
... the cognitive radio operating in coexisting scenarios have to optimize their performance under their own power as well interference constraints of the primary ...for cognitive MIMO system [17] needs ...
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Contemporary Issues in Cognitive Radio Network
... A Cognitive Radio (CR) is a well-informed radio platform which has the ability to exploit its environment to increase spectral efficiency and ...However Cognitive radio networks (CRN) ...
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A Survey On Cognitive Radio
... The radio spectrum is a natural resource regulated by governmental or international agencies and is assigned to license holders on a long term basis using a fixed spectrum assignment policy ...of Cognitive ...
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Survey on Security Issues in Cognitive Radio Network
... The cognitive radio component is shown in figure ...The radio atmosphere parameter measures by the sensing ...the cognitive engine. Combine the information by the cognitive engine which ...
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