Communication methods and apparatus based on orthogonal hadamard-based sequences having selected correlation properties
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United States of America Patent
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Feb 25, 2003
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Aug 17, 1998
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Aug 17, 1998
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Abstract
Methods and apparatus for synchronization of a transmitter and a receiver are based on orthogonal sequences having optimized correlation properties. The transmitter may generate signed versions of S-Hadamard sequences that are obtained by position-wise scrambling a set of Walsh-Hadamard sequences with a special sequence having complex elements of constant magnitude. The receiver estimates a time location and sequence identity of a received version of the synchronization signal.
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