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- W3145928048 abstract "Cognitive radio(CR)is sensitive to the changes of environment,and by using the spectrum sensing to find the spectrum hole,it can adapt to the environment.The key technology of cognitive radio is to detect the primary users.The ability that cognitive users detect the primary users is restricted by multi-path effect and shadow fading so that the detection probability of primary users cannot be enhanced.Hence,a cooperative scheme,namely the three users' cooperative spectrum sensing was adopted.Three secondary users transmit data to a common receiver in the TDMA mode,and when the primary users appear,the three secondary users can detect the primary users by energy detection.Simulation result indicates that three users' cooperative spectrum sensing enhance the detection probability and reduce the detection time." @default.
- W3145928048 created "2021-04-13" @default.
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- W3145928048 date "2008-01-01" @default.
- W3145928048 modified "2023-09-28" @default.
- W3145928048 title "Cooperative spectrum sensing in cognitive radio network" @default.
- W3145928048 hasPublicationYear "2008" @default.
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