11-12-2012, 05:58 PM
Abstract On Performance analysis of signal detection in Cognitive Radio
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Abstract
Today’s increasing demand of radio spectrum which gains a important resource with increasing demand. All radio spectrums are allocated to different services, applications, mobile communication. After all observation the scene came in picture was that allocated spectrum band could not get used all the time by a particular user , we are having limited resource & many user to overcome this problem & improve the spectrum usage cognitive radio got importance.cognetive radio can scene a radio environment and adapt to the environment to achieve more frequency. The most important task for the CR system is to identify the transmission in space & time .cognitive radio is the system that senses, environment and can dynamically and autonomously adjust its radio operating parameters
Accordingly there are various methods like energy detector, match filter, & cyclostationary detection to detect the signal.
In future there will be some issues regarding CR security first one is it may create the interferences to secondary user when it is getting allocated to secondary user & another one is, where we will find the suitable spectrum band to meet our demand?