Cognitive Radio based Spectrum Sharing technique for 5G system

The spectrum insufficiency, which is posing as a threat to the upcoming wireless communication systems, can be tackled using spectrum sharing .The spectrum sensing function of cognitive radio can be applied for spectrum sharing. The radio spectrum can be classified as unlicensed and licensed spectrum. The spectrum available officially has become insufficient and it alone cannot handle the traffic requests. As a result the unlicensed spectrum have to be fully exploited to support data communications in 5G. The aim of this paper is to propose a cognitive radio based spectrum sharing technique for 5G that utilizes the spectrum sensing function to efficiently assign spectrum to the unlicensed users. The traditional sensing techniques do not work well with different configurations like fast time varying channels. Therefore a sensing technique can be developed by modifying the traditional technique on the receiver side by dividing the sensing time period. It would opportunistically access the unlicensed spectrum to increase the cellular capacity within the default sensing period. The proposed technique would enhance the performance of the existing detectors for spectrum sensing.