Apparatus and method for parallel searching and correlating for CDMA system
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United States of America Patent
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Feb 11, 2003
Grant Date -
N/A
app pub date -
May 28, 1999
filing date -
May 28, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A method to expediently perform search/correlation operation between an internal pilot pseudonoise (PN) sequence and an incoming pilot PN sequence. This operation is used to acquire base stations in a Code Division Multiple Access (CDMA) system. In one embodiment, the present invention recites a method comprising several steps. First, a plurality of PN sequence values are provided internally and an input signal sample is received. The input signal sample is correlated, in parallel, with the plurality of PN sequence values. The correlation operation is performed at a rate equivalent to the input sample rate times the number of PN sequence values being correlated in parallel, assuming a resolution of one. The resultant products are respectively summed and stored in a plurality of accumulators.
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