| 摘要 |
A method for detecting a cyclostationary signal in a signal to be analyzed, received from a transmitter by a receiver or read from a recording medium by a reader device. According to this method, the value of a discrimination function J is estimated, expressed as a quadratic form of the cyclic correlation coefficients of the signal to be analyzed for a set (I*M) of non-zero time shifts and a set (IK) of cyclic frequencies, and the value 1 -γ ( v , Uσ4 J ) is compared with a wrong detection rateηin order to determine whether said cyclostationary signal is present in the signal to be analyzed, whereinγ(ν,x) is the normalized lower incomplete gamma function,νis the product of the cardinal (M) of said set of non-zero time shifts and of the cardinal (K) of said set of cyclic frequencies, U is the width of the autocorrelation window on which the cyclic correlation coefficients are calculated, andσ4 is the square of the noise variance.
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