Patent ID: 7606139

Claim:
A method comprising: storing, in a memory, instructions for performing the method; executing the instructions on a processor; according to the instructions being executed; receiving a multiple preamble Orthogonal Frequency Division Multiplexing (OFDM) signal comprising a plurality of frames, the frames comprising symbols and a preamble with a plurality of predetermined preamble symbols; computing a maximum Frequency Domain Differential Correlator (FDDC) value for each of the symbols in the frames; and determining a location of the preamble in one of the plurality of frames by summing the maximum FDDC value for each symbol at a same frame location in consecutive frames of the OFDM signal, wherein said determining the location of the preamble further comprises comparing the summed maximum FDDC values for each symbol at a same frame location in consecutive frames with a summed maximum FDDC values for each symbol at an adjacent frame location in consecutive frames, wherein said determining the preamble location further comprises identifying the preamble location of the symbols at the same frame location in consecutive frames as having a summed maximum FDDC value lamer than the summed maximum FDDC value for each symbol in the adjacent frame locations in consecutive frames.