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- W2386498562 abstract "Spectrum detection is a critical technology in cognitive radio.Secondary user(CR) can get the prior information about primary user using channels by periodically detecting,which can guide the detection algorithm to find idle channels quickly and greatly reduce the delay time and minimize the CR user's average interruption probability.This paper develops an optimization algorithm for searching an idle channel by considering idle probability and utilization probability of a channel,then we derive the expressions of average delay that CR user searches the first idle channel.It is observed from the simulation that simulated and theoretical curves exhibit the same trend and their values are almost the same,which verify the correctness of theoretical analysis in this paper.Comparing random searching method,our algorithm can greatly reduce the searching delay.The impact of waiting time to average delay is discussed.It is found that there is an optimal waiting time that minimizes the average delay of CR user searching the first idle channel." @default.
- W2386498562 created "2016-06-24" @default.
- W2386498562 creator A5056970858 @default.
- W2386498562 date "2011-01-01" @default.
- W2386498562 modified "2023-09-25" @default.
- W2386498562 title "Optimization algorithm for channel searching in cognitive radio system" @default.
- W2386498562 hasPublicationYear "2011" @default.
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