Apparatus for searching a signal in mobile communication system and method thereof
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United States of America Patent
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-
Aug 14, 2007
Grant Date -
Aug 15, 2002
app pub date -
Dec 19, 2001
filing date -
Dec 21, 2000
priority date (Note) -
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status (Latency Note)
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Abstract
Apparatus and methods for signal search in a mobile communication system can process input signals in parallel. A signal searcher apparatus in a communication system can include a first sequential storage device and a second sequential storage device for respectively storing PN codes and input signals. The signal searcher can include a plurality of despreading devices that despread in parallel the input signals having I and Q components by respectively using the PN codes. In a case where the length of coherent accumulation is a plurality of the number of despreading devices, additional buffers store (e.g., temporarily) the accumulated despreaded signals each having I and Q components that are equal to the number of searched PN offsets. According to preferred embodiments of the present invention, pilot signals searching speed can be increased and/or the length of PN offset and coherent calculation can be increased.
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