Top PDF Interference Mapping for Spectrum Sensing in Cognitive Radio

Interference Mapping for Spectrum Sensing in Cognitive Radio

Interference Mapping for Spectrum Sensing in Cognitive Radio

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RF-Spectrum Opportunities for Cognitive Radio Networks Operating Over GSM Channels

RF-Spectrum Opportunities for Cognitive Radio Networks Operating Over GSM Channels

... the radio frequency spectrum opportunities available in a common global system for mobile communications (GSM) channel to support the opera- tion of a cognitive radio network ...(CRN). ...

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Routing in Cognitive Radio Networks - A Survey

Routing in Cognitive Radio Networks - A Survey

... changes in the CRN that may trigger a large number of updates and lead to rapidly changing routing ...the cognitive radio is to sense and determine whether a channel is available or ...senses ...

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Intelligent Wireless Communication System Using Cognitive Radio

Intelligent Wireless Communication System Using Cognitive Radio

... efficient spectrum utilization challenge. To address this challenge, cognitive radio (CR) is emerged as the key technology; which enables opportunistic access to the ...communication in which ...

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Analytical Model Analysis Of Distributed Cooperative Spectrum Sensing Method

Analytical Model Analysis Of Distributed Cooperative Spectrum Sensing Method

... to spectrum sensing control, awareness networking and cooperative spectrum sensing in Figure ...Cooperative spectrum sensing is a powerful concept to leverage the spatial ...

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A Novel Reservation-based MAC Scheme for Distributed Cognitive Radio Networks

A Novel Reservation-based MAC Scheme for Distributed Cognitive Radio Networks

... the spectrum sens- ing and spectrum access ...the spectrum sensing ...the spectrum sensing and spectrum ac- cess periods and may correct clock ...ysis, in what ...

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Current Trends and Research Challenges in Spectrum-Sensing for Cognitive Radios

Current Trends and Research Challenges in Spectrum-Sensing for Cognitive Radios

... of sensing the spectrum, making a decision about the hole and the licensed user, sharing the spectrum and mobility of secondary user in case a licensed user is ...as: Spectrum ...

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A Cooperative Spectrum Sensing Scheme Based on Trust and Fuzzy Logic for Cognitive Radio Sensor Networks

A Cooperative Spectrum Sensing Scheme Based on Trust and Fuzzy Logic for Cognitive Radio Sensor Networks

... depicted in Fig. 4. It can be seen that the proposed scheme has the highest detection probability than the OR/AND fusion rules based scheme, the EGC based scheme, and the fuzzy logic scheme. It means that the ...

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Mitigating Intrusion and Vulnerabilities in Cognitive Radio Networks

Mitigating Intrusion and Vulnerabilities in Cognitive Radio Networks

... threats in cognitive radio entail majorly illegal information injection and forging of information ...The radio environment map (REM) fetches several characteristic data from a large ...

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

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

... efficient spectrum sensing plays an important role in cognitive radio ...fast sensing of spectrum is the main function of a cognitive radio for ...

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Channel Decision in Cognitive Radio Enabled Sensor Networks: A Reinforcement Learning Approach

Channel Decision in Cognitive Radio Enabled Sensor Networks: A Reinforcement Learning Approach

... the sensing frequency based on the amount of PU activity detected on the current ...function in (8) and the value in (9) and ...average interference decreases with the reduced PU ...detected ...

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Multiple Detectors Based Analytical Performance of Spectrum Sensing

Multiple Detectors Based Analytical Performance of Spectrum Sensing

... a sensing period so as to determine whether the PU has emerged or ...of spectrum sensing is to detect the presence of PU correctly, ...increase in Signal-to-Noise ratio[5]. There are 3 major ...

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A Novel Scheme to Improve the Spectrum Sensing Performance

A Novel Scheme to Improve the Spectrum Sensing Performance

... of spectrum for licensed users only, the need for secondary access by unlicensed users is ...increasing. Cognitive radio turns out to be helping this situation because all that is needed is a ...

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Power Allocation with Random Removal Scheme in Cognitive Radio System

Power Allocation with Random Removal Scheme in Cognitive Radio System

... the radio frequency spectrum ...scenario in which all PUs are staying in receiving mode, and SUs are trying to transmit data in the uplink to the ...the interference from ...the ...

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SPECTRUM SENSING IN COGNITIVE RADIO NETWORKS: QOS CONSIDERATIONS

SPECTRUM SENSING IN COGNITIVE RADIO NETWORKS: QOS CONSIDERATIONS

... allocated spectrum or not, is an essential task for a CR ...improving sensing accuracy by avoiding false positive results while detecting the presence of a ...employed sensing technique should ...

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User Characterization through Dynamic Bayesian Networks in Cognitive Radio Wireless Networks

User Characterization through Dynamic Bayesian Networks in Cognitive Radio Wireless Networks

... Cognitive Radio is a technology that allows to implement new and innovative skills to wireless systems such as dynamic access to spectrum; a concept comprising the autonomous control of multiple ...

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Two stage spectrum sensing for cognitive radio using cyclostationarity detection and energy detection

Two stage spectrum sensing for cognitive radio using cyclostationarity detection and energy detection

... two-stage spectrum sensing that we propose is shown in figure ...serially. In the coarse sensing stage, the channel is sensed using energy ...fine sensing consisting of ...

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ENERGY EFFICIENT COOPERATIVE SPECTRUM SENSING IN COGNITIVE RADIO

ENERGY EFFICIENT COOPERATIVE SPECTRUM SENSING IN COGNITIVE RADIO

... versus sensing time is presented in Figure ...the sensing time for each CR leads to increase in the number of samples which improves the accuracy (smaller false alarm and miss-detection ...

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WAVELET AND S-TRANSFORM BASED SPECTRUM SENSING IN COGNITIVE RADIO

WAVELET AND S-TRANSFORM BASED SPECTRUM SENSING IN COGNITIVE RADIO

... vacant spectrum and sub band edges with low computational ...fast in sensing time and flexibility and can effectively detect frequency boundaries accurately even at low Signal to Noise ...the ...

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ENERGY DETECTION BASED SPECTRUM SENSING FOR COGNITIVE RADIO

ENERGY DETECTION BASED SPECTRUM SENSING FOR COGNITIVE RADIO

... — Cognitive Radio is an emerging technology which avoids the congestion in wireless communication by exploiting unused radio spectrum ...The Spectrum sensing plays a ...

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