Spectrum Sensing Techniques and Issues in Cognitive Radio

  ijett-book-cover  International Journal of Engineering Trends and Technology (IJETT)          
© 2013 by IJETT Journal
Volume-4 Issue-4                       
Year of Publication : 2013
Authors : Bodepudi Mounika , Kolli Ravi Chandra , Rayala Ravi Kumar


Bodepudi Mounika , Kolli Ravi Chandra , Rayala Ravi Kumar. "Spectrum Sensing Techniques and Issues in Cognitive Radio". International Journal of Engineering Trends and Technology (IJETT). V4(4):695-699 Apr 2013. ISSN:2231-5381. www.ijettjournal.org. published by seventh sense research group


In present day communication wireless communication has become the most popular communication. Because of this growing demand on wireless applications has put a lot of constraints on the available radio spectrum which is limited and precious. In fixed spectr um assignments there are many frequencies that are not being properly used. So cognitive radio helps us to use these unused frequency bands which are also called as “White Spaces”. This is a unique approach to improve utilization of radio electromagnetic s pectrum. In establishing the cognitive radio there are 4 important methods. In this paper we are going to discuss about the first and most important method to implement cognitive radio i.e., “spectrum sensing”. The challenges, issues and techniques that ar e involved in spectrum sensing will discussed in detail.


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Primary User, Secondary User, Spectrum Sensing, Signal Processing Techniques.