Multiplex communications – Communication techniques for information carried in plural... – Combining or distributing information via time channels
Reexamination Certificate
2008-03-07
2011-10-18
Lai, Andrew (Department: 2473)
Multiplex communications
Communication techniques for information carried in plural...
Combining or distributing information via time channels
C370S350000, C370S395620
Reexamination Certificate
active
08040922
ABSTRACT:
The present invention relates to an apparatus and method of frame synchronization in broad band wireless communication systems. In an apparatus of frame synchronization in a mobile station, a time variant phase rotation compensator eliminates time variant phase rotation carried in received signals by conjugated multiplication between adjacent signal samples. Then, the processed signal is fed into a delay correlator to calculate a plurality of correlations between two successive frames. A local power calculator acquires an average power of several symbols centered on delayed correlation values. A normalizer normalizes the delayed correlation values with a local average power corresponding to the delayed correlation values. A maximum value detector selects the maximum value from normalized correlation values to trigger frame synchronizing and timing signals.
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Hayashi Hiroyuki
Nakamura Michiharu
Nakaya Yuuta
Suzuki Syuusaku
Wang Xin
Fujitsu Limited
Katten Muchin & Rosenman LLP
Lai Andrew
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