Integrated circuit for code acquisition

Details Integrated circuit for code acquisition Integrated circuit for code acquisition

2008-07-22

2008-07-22

Wang, Ted (Department: 2611)

Pulse or digital communications

Spread spectrum

Direct sequence

C375S142000, C375S143000, C375S149000, C375S326000

Reexamination Certificate

active

07403558

ABSTRACT:
A semiconductor integrated circuit for processing a plurality of received broadcast signals, such as GPS signals, is operable in two modes: acquisition and tracking. In an acquisition mode, a memory arrangement comprising two circulating shift registers circulates samples of a received signal for correlation with a locally generated version of a GPS code. In a tracking mode, the sampled signal is provided direct to the correlators. The same correlators are thereby used to increase acquisition speed.

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