Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-10-23
2007-10-23
Ghayour, Mohammed (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S150000, C375S147000
Reexamination Certificate
active
10692287
ABSTRACT:
The invention relates to a method for determining the correlation phase between a signal received at a receiver and a replica sequence. A matched filter multiplies samples (21) of the received signal with samples (22) of the replica and sums the resulting products to obtain a correlation value for a specific correlation phase. The samples of the received signal and the replica are shifted relative to each other for each correlation phase that is to be checked. In order to reduce the computational load, it is proposed that results obtained in the correlation calculations for one correlation phase are used by the matched filter also for calculations for a subsequent correlation phase. The invention relates equally to a corresponding receiver, to an electronic device comprising such a receiver, to a device cooperating with such a receiver and to a corresponding system.
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Interim Guidelines for Examination of Patent Applications for Patent Subject Matter Elgibility, pp. 50-54.
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Ghayour Mohammed
Nokia Corporation
Williams Lawrence
LandOfFree
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