Primary user signal detection over fading channel in the presence of weakly correlated noise
Journal Title: International Journal for Research in Applied Science and Engineering Technology (IJRASET) - Year 2016, Vol 4, Issue 3
Abstract
The rapid deployment of new wireless devices and application leads to increase in demands for wireless radio spectrum. But the fixed spectrum assignment policy becomes a bottleneck for more efficient spectrum utilization, under which a greater portion of licensed spectrum is severely underutilized. However in cognitive radio networks reliable spectrum sensing is necessary to avoid interference to secondary users from the primary users. The cognitive radio networks are networks that have reconfigurable properties and the capability to detect the unoccupied spectrum holes and change frequency for end to end communication. Spectrum sensing methods independent of noise samples will not provide optimum performance. To address this issue a locally optimum detection method is adopted. The performance of LO detection mainly depends on false alarm and detection probability. Numerical and simulation results demonstrate the superiority of the proposed method over the known detection method with comparable complexities. Furthermore the estimated correlation different from the real correlation is considered for detailed study in this paper.
Authors and Affiliations
S. S. Harshini, K. A. Dattatreya
Keywords
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