High-speed cell search system for CDMA
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United States of America Patent
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May 7, 2002
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N/A
app pub date -
Jun 16, 1998
filing date -
Jun 16, 1997
priority date (Note) -
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Abstract
In a high-speed search system for CDMA, plural (M) symbols which are subjected to spread frequency coding with a spreading code called as a short code are prepared when synchronization of the spreading code is established before synchronization of carrier is established in a mobile station used in a CDMA cellular system, data which are obtained by forming an orthogonal code with the polarities of the M symbols are set as a down signal, and when the orthogonal code concerned is detected, coherent integration is performed by a correlator having combinations of the polarities which can be possibly taken by the code over the plural symbols (of M) constituting the code.
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