Efficient header acquisition

Details Efficient header acquisition Efficient header acquisition

2005-02-09

2010-02-09

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Receivers

Particular pulse demodulator or detector

C375S241000, C375S240230, C375S240270, C375S240210

Reexamination Certificate

active

07660372

ABSTRACT:
In an integrated satellite receiver, improved header acquisition techniques are described for quickly locating a header symbol sequence in a data stream substantially implemented on a single CMOS integrated circuit. To identify the location of a header symbol sequence in a data stream, a selected header acquisition technique employs a real time correlator followed by an accumulator. Once accumulation over a predetermined number of frames is finished, the largest or maximum value among the accumulated correlator values is identified. If the maximum value exceeds a threshold, it will be declared as a peak and the address associated is the peak timing.

REFERENCES:
patent: 4599732 (1986-07-01), LeFever
patent: 5737361 (1998-04-01), Park et al.
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patent: 6175560 (2001-01-01), Bhagalia et al.
patent: 2002/0061054 (2002-05-01), Boloorian
patent: 2005/0089083 (2005-04-01), Fisher et al.

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