Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2006-09-12
2006-09-12
Corrielus, Jean B (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S144000, C375S142000, C375S150000, C370S500000
Reexamination Certificate
active
07106783
ABSTRACT:
The present invention discloses a method for searching multipaths of a mobile communication system, which includes the steps of: performing a coherent detection on a reversed I and Q channel signals of a DPCCH transmitted form a mobile station, multiplying the detected signal by a pilot pattern to accumulate a pilot symbol section in a corresponding section, and performing a coherent accumulation on the other symbol section in a symbol basis; calculating energy value for each coherently accumulated I and Q channel signals; multiplying the calculated energy values by a weight that has been multiplied by the pilot symbol section and another weight that has been multiplied by the other symbol section, respectively; noncoherently accumulating the energy values multiplied by variable weights, and saving the energy values; comparing the saved energy values with a periodically designated threshold; and searching timing information as many as a number of fingers in order of highest energy value according to the comparison result.
REFERENCES:
patent: 2002/0057730 (2002-05-01), Karlsson et al.
patent: 2002/0110140 (2002-08-01), Juntti et al.
Park Dong Jo
Seo Kyung Sam
Corrielus Jean B
Fleshner & Kim LLP
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