Patent ID: 8340072

Claim:
A subscriber station in an orthogonal frequency division multiplexing access (OFDMA) system, the subscriber station comprising: a) receive circuitry adapted to receive and downconvert a plurality of OFDM signals, said plurality of OFDM signals forming an OFDMA frame having a training sequence; b) Fourier Transform (FT) logic adapted to provide a FT on each of said plurality of OFDM signals to generate a plurality of divided-multiplexed coded signals; and c) decoder logic adapted to provide division-multiplexing decoding on said plurality of divided-multiplexed coded signals to recover data from a plurality of base stations; wherein said training sequence is a preamble having a common synchronization channel comprising common synchronization subcarriers, said common synchronization subcarriers carrying a common sequence; said common sequence providing locations of candidate base stations, and reducing a search window for base station specific preamble.