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- W946284009 abstract "The recent developments in wireless industries have led to a remarkable increase in spectrum demand. Literatures have shown that the scarcity of radio spectrum is mainly due to the inefficiency of traditional static spectrum allocation policies and the available spectrums are also underutilized. Cognitive Radio offers a solution by utilizing the spectrum holes that represent the potential opportunities for non-interfering use of spectrum. The reduction of this scarcity is however achieved by improving the spectrum sensing performance. A typical type of spectrum sensing task is cooperative spectrum techniques. The main concept behind cooperative spectrum sensing is to enhance the sensing performance by exploiting the spatial diversity in the observations of spatially located cognitive radio (CR) users by cooperation. CR users can share their sensing information for making a combined decision more accurate than the individual decisions. This paper presents cooperation method using Centralized Cooperative Spectrum Sensing (CCSS) and Decentralized Cooperative Spectrum Sensing (DCSS) based on the probability of true detection (P d ) and the probability of false detection (P f ). The P d being important to the primary user as it indicates their protection level from secondary users just as the (P f ) is important to the secondary users as it indicates their usage of an unoccupied channel. The simulation results shows that the robust and reliable detection of primary user (PU) is possible even at very low SNR and increases proportionately with the number of secondary user to a certain level which is of crucial importance in cooperative sensing techniques in cognitive radio." @default.
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- W946284009 date "2015-01-01" @default.
- W946284009 modified "2023-09-26" @default.
- W946284009 title "Investigation of Interference in Cognitive Radio Using Cooperative Sensing Techniques" @default.
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