Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2007-02-06
2007-02-06
Burd, Kevin (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C342S357490
Reexamination Certificate
active
09805602
ABSTRACT:
One embodiment of the present invention includes a first memory, an address counter, and an adder. The first memory having KN locations stores K sums of mixer samples during an epoch interval. The mixer samples are generated at a first clock frequency from a mixer for N channels corresponding to N satellites in a global positioning system (GPS) receiver. The address counter generates an address modulo-KN corresponding to a first location in the memory at the first clock frequency. The adder adds one of the mixer samples to contents of the first location to generate a sum. The sum is written into the first location.
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Eftekhar Ali A.
Fotowat-Ahmady Ali
Mehrnia Alireza
Nassiri Massoumeh
Shakeri Kaveh
Blakely , Sokoloff, Taylor & Zafman LLP
Burd Kevin
PRI Research & Development Corp.
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