Spectrum Sensing in Cognitive Radio using Mimo Technique
Suman Rathi1, Rajeshwar Lal Dua2, Parmender Singh3

1Suman Rathi, Research Scholar, Department of Electronics & Communication, JNU, Jaipur, Jaipur, Rajasthan, India.
2Prof. Rajeshwar Lal Dua, Professor, Department of Electronics & Communication, JNU, Jaipur, Jaipur, Rajasthan, India.
3Parmender Singh, Assistant Professor, Department of Electronics & Communication, GITM, Gurgaon, Haryana, India.
Manuscript received on October 09, 2011. | Revised Manuscript received on October 21, 2011. | Manuscript published on November 05, 2011. | PP: 259-265 | Volume-1 Issue-5, November 2011. | Retrieval Number: E0215101511/2011©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: 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 efficiency of the spectrum usage is an urgent need as an intrinsic result of the increasing demand for higher data rates, better quality of services and higher capacity. There are several spectrum sensing techniques proposed in literature for cognitive radio based systems like Non cooperative and cooperative spectrum sensing. But there are some practical challenges and limitations 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 benefit for communication system. The probability of detection increases and the probability of false alarm decreases as given below in the simulation section.
Keywords: Cognitive Radio, Spectrum hole, Spectrum Sensing, MIMO, Cooperative.