Patent ID: 7130331

Claim:
A method of searching for a synchronization sequence transmitted in bursts, comprising: shifting a first string of samples of a first received signal burst into a shift register according to a clock signal; subsequent to the shifting the first string, disabling the clock signal; calculating a first correlation result based on at least a first substring of the first string of samples; calculating a second correlation result based on at least a second substring of the first string of samples; subsequent to the disabling the clock signal, enabling the clock signal; subsequent to the enabling the clock signal, shifting a second string of samples of a second received signal burst into the shift register according to the clock signal; calculating a third correlation result based on at least a first substring of the second string of samples; calculating a fourth correlation result based on at least a second substring of the second string of samples; calculating a first coherent sum based on the first correlation result and the second correlation result; and calculating a second coherent sum based on the third correlation result and the fourth correlation result, wherein the noncoherent sum is based on the first coherent sum and the second coherent sum.