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METHOD FOR IMPROVING THE SENSING ACCURACY OF DISTRIBUTED SPECTRUMS IN A COGNITIVE RADIO SYSTEM REQUIRED FOR SECURITY HAVING IMPROVED SENSING ACCURACY AND OPERATION SPEED
METHOD FOR IMPROVING THE SENSING ACCURACY OF DISTRIBUTED SPECTRUMS IN A COGNITIVE RADIO SYSTEM REQUIRED FOR SECURITY HAVING IMPROVED SENSING ACCURACY AND OPERATION SPEED
PURPOSE: A method for improving the sensing accuracy of distributed spectrums in a cognitive radio system is provided to rapidly eliminate influence caused by an attack by excluding a sensing node having high attack capability from a fusion process in a following sensing step.;CONSTITUTION: A plurality of sensing values is inputted according to the sequence of reputation values of the plurality of sensing values. A final result value is calculated by applying a weighted value to the plurality of sensing values(S100). The reputation values of the plurality of sensing values are controlled according to the final result value. A trend value is calculated for the reputation values of the plurality of sensing values(S200). The abnormality of the plurality of sensing values is determined based on the trend value. A corresponding sensing node showing abnormal symptom is excluded from fusion(S300), IDs of the plurality of sensing nodes are arranged in a descending order based on the reputation values of the plurality of sensing values(S400).;COPYRIGHT KIPO 2012
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