Optimal frequency allocation techniques in cognitive radio networks

Abstract

Data-intensive applications are now introduced with goodconsumer experience due to the advances in information and communicationstechnologies. Due to the huge development of wireless devices and mobiledata traffic had gained attention towards identifying accurate solutions formore proficient utilization of the wireless spectrum. An essential issueconfronting the future aspects of wireless systems is to point out the bestspectrum bands to promote the issue of administrations of future. The largerpart of the radio spectrum is allotted to different process, requisitions andindividuals promotes that spectrum handling is quite low. The spectrumsensing is promoted at the beginning of each duration channel before the datagets transmits. As a promising system to enhance the spectrum usage,Cognitive Radio (CR) methodology has the higher potential to satisfy suchobligation by promoting unlicensed individuals to process co-ordinately inlicensed bands. Through this work, Cognitive radio and Full-Duplex (FD)based two-way relay communications are developed to enhance spectrum utilization for multichannel and to decrease the false alarm rate.To solve the optimization problems in spectral efficiency, soft computing techniques are proposed to minimize the self-interference and delay to the licensed users.