The Evaluation of Cyclostationarity-Based Spectrum Sensing in Multipath Fading Channel

Cognitive radio is based on dynamic spectrum
sharing in order to increase spectrum efficiency. In this
approach , which is opposite of the current spectrum allocation,
a secondary user (unlicensed) shares a frequency band with
designated primary users (licensed) without causing
interference or performance degradation to the primary users.
Cognitive radio needs reliable spectrum sensing techniques to
detect the vacant licensed spectrum and utilize them. In this
paper, we evaluate the performance of cyclostationary-based
spectrum sensing algorithms in comparison with energy
detector in multipath fading channel and noise uncertainty.
These algorithms were developed in context of WRAN 802.22;
the first cognitive radio standard, for TV-PAL and wireless
microphone as the primary users. The results show a superior
performance of the proposed algorithms in multipath fading
channel.