Cyclostationary Feature Detection in CRN
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Abstract
The cognitive radio is in demand where the frequency band, the sharing of frequency is realized for the assignment to the primary system. After sensing the frequency band being assigned to the primary systems, the signals are transmitted by the secondary cognitive terminal avoiding any interference between the two. Though the signals made by man are non-stationary but some of them are Cyclostationary that is periodicity is exhibited in their statistics, which is either due to the modulation and decoding or can be intentionally produced so that estimation of channel and synchronization can be aided. Moreover, they are capable of differentiating noise from PU signals. Hence for particular modulation type, such periodicity can be used to detect the random signals on the background of not only noise but signals with other modulation too.
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