Patent ID: 8831070

Claim:
A method for detecting a known start of frame delimiter pattern in a received stream of samples of a data packet, said data packet comprising at least a preamble portion and a header portion, said preamble portion preceding said header portion and containing said start of frame delimiter pattern, the method comprising the steps of: correlating a portion of said received stream of samples of said data packet with a first sequence corresponding to said start of frame delimiter pattern, thereby obtaining a first correlation result; comparing said first correlation result with a given threshold; correlating said portion of said received stream of samples with a second sequence, said second sequence derived from a pattern present in said preamble portion and different from said first sequence, thereby obtaining a second correlation result; comparing said first correlation result with said second correlation result; deciding that said start frame delimiter pattern has been detected, if said first correlation result is larger than said given threshold and larger than said second correlation result; otherwise, repeating the previous steps with a further portion of said first and second sequence.