Patent ID: 7596154

Claim:
A method of generating a signal, r y,STS , indicating the presence of at least one predefined identification data marker, STS, of length X samples, in at least one received digital data frame, y, transmitted over a communication link comprising a plurality of received samples, each received sample being identified as v(n), for n>0, the method comprising: having an integrated circuit generate a first signal, STS ref , based on said predefined identification data marker according to an expression STS ref ={STS k ,STS k+1 ,STS k+2 , . . . ,STS X ,STS 1 ,STS 2 , . . . ,STS k−1 }. wherein k is a predefined amount; and having the integrated circuit generate a plurality of output signal values each according to the expression r y , STS ⁢ ⁢ ( n ) = ∑ l = 0 N - n - 1 ⁢ ⁢ y ⁢ ⁢ ( n ) · STS ref * ⁢ ⁢ ( l + n ) , where STS* ref is the complex conjugate of STS ref ; wherein the presence of the at least one predefined identification marker is indicated by a peak in r y,STS .