Spectrum Sensing in Cognitive Radio using MIMO Technique
Suman Rathi, Rajeshwar Lal Dua, Parmender Singh · 2011
In this paper one of the most important cognitive radio task i.e. spectrum sensing is explained in detail. Cognitive radio is an intelligent wireless communication technology in order to increase the spectrum efficiency. Increasing effici ency of the spectrum usage is an urgent need as an intrinsic re sult of the increasing demand for higher data rates, better qua lity of services and higher capacity. There are several spectrum sensing techniques proposed in literature for cognitive rad io based systems like Non cooperative and cooperative spectrum sensing. But there are some practical challenges and limitati ons in these techniques. So this paper provides the idea behind the MIMO concept in cognitive radio where multiple antennas can be placed both on primary user and secondary user and results evaluate the performance of its implementation. With the emergence of MIMO system, multipath were effectively converted into be nefit for communication system. The probability of detection increases and the probability of false alarm decreases as given b elow in the simulation section.