Patent ID: 8913571

Claim:
A cell search method in a multiple carrier wireless network, said method comprising: a step of obtaining and/or ordering an initial list of possible candidate couples, [carrier frequency; bandwidth], by an apparatus according to said multiple carrier wireless network; a step of reducing said initial list by the apparatus, delivering a reduced list of candidate couples, said reduced list comprising only the candidate couples of the initial list that are compatible with a predetermined communication mode of said multiple carrier wireless network, wherein said step of reducing said initial list comprises for at least some candidate couples of said initial list, an OFDMA processing step, in which a preamble is searched in view of a given number of symbols applied to a received signal at values of a current candidate couple, said search being made by calculating a differential cross correlation C, between a differential received vector, calculated from said received signal, and a differential preamble vector; and a step of searching, among the reduced list of candidate couples [carrier frequency; bandwidth], for at least one candidate couple associated with at least one cell of said multiple carrier wireless network and, if identified, selecting the at least one candidate couple associated with the at least one cell of said multiple carrier wireless network.