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Cognitive radio technology necessitates accurate and timely sensing of primary users' activity on the chosen set of channels. Reduction of sensing error may be accomplished through random selection in which idle and active channels are assigned different probabilities of being selected for sensing. In this paper, the authors explains about the probabilistic analysis of this policy and they investigates the range of values in which such, incomplete sensing is capable of maintaining an accurate view of the status of the working channel set.
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