Patent ID: 8254497

Claim:
A method for detecting a cyclostationary signal in a signal to be analyzed, comprising: receiving from a transmitter by a receiver, or reading from a recording medium by a reading device, said signal to be analyzed, characterized by: estimating the value of a discrimination function J, said discrimination function being 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 (I K ) of cyclic frequencies; comparing the value 1 - γ ⁡ ( v , U σ 4 ⁢ J ) with a false detection rate η, where γ(v,x) is the normalized lower incomplete gamma function, ν is 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 auto correlation window on which the cyclic correlation coefficients are calculated, and σ 4 is the square of the noise variance; indicating whether said cyclostationary signal is present in said signal to be analyzed, depending upon the result of this comparison.