REVIEW ON SPECTRUM DETECTION TECHNIQUES UNDER BLIND PARAMETERS

Abstract

: From last ten years, cognitive radio gains much interest due to the complexity in
management and limited spectrum access for wireless communication. Some major obstacles are
occurred in the spectrum sensing such as false alarm, missed detection, complexity and time
consumption, because we cannot observe all parameters like frame size, modulation technique, data rate
of primary user (PU) signals due to some security issues.
For reducing these problems a new blind cyclostationary technique is introduced in which sum value of
magnitude square of cyclic spectral density (SCSD) is created. In this paper, the requirements of
cognitive radio are investigated. The main goal of this paper is to propose an another solution for the
reduction of sensing time to sense the spectrum by implementing the combination of FAM and blind
cyclostationary technique by assuming some parameters of primary user signal in existing techniques
and this technique will reduces the complexity too.