Patent ID: 8670734

Claim:
A method for wireless communications, comprising: receiving, at a first antenna of an apparatus, a first signal comprising a reference sequence; receiving, at a second antenna of the apparatus, a second signal comprising the same reference sequence; sampling the first and second signals to form first and second signal sequences; correlating the first and second signal sequences with each of one or more candidate sequences for the reference sequence using normalization, wherein using normalization comprises, for each of the candidate sequences: dividing the square of the absolute value of the correlations for the first and second signal sequences by the square of the mathematical norm of the candidate sequences to obtain first and second signal energy estimates for the first and second antennas, respectively; dividing the first signal energy estimate by the difference between the square of the mathematical norm of the first signal sequence and the first signal energy estimate; and dividing the second signal energy estimate by the difference between the square of the mathematical norm of the second signal sequence and the second signal energy estimate; and determining the reference sequence and timing for the first and second signals based on the normalized correlations.