Author : Dr.Dipak P.Patil 1
Date of Publication :7th August 2016
Abstract: Cognitive radio (CR) is a new archetype wireless communication system which is use for efficient utilization of radio frequency (RF) spectrum or RF channel for opportunity to wireless communication. The motivation behind cognitive radio is the insufficiency of the existing frequency band and rising demand due to the up-and-coming wireless applications for mobile users. Cognitive radio is advanced technology for dynamic spectrum detection and for the use of unutilized spectrum. The secondary user (SU) devices enthusiastically sense to the primary user (PU) and use the spectrum band if it is accessible without affecting their performance. In this paper we intend methodology and comparative sensing schemes for Cyclostationary feature detection techniques and Co-operative Eigen value based spectrum detection in CR. The performance of various wireless fading channels is evaluated by analyzing it’s operating characteristics. The study of the performance outcome shows that, at low signal to noise ratio (SNR) sensing is improved in Eigen value based detection method because it does not require any prior information about primary signals. For simulation we used MATLAB software.
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