Process for determining a time lapse between a trigger...

Details Process for determining a time lapse between a trigger... Process for determining a time lapse between a trigger...

2007-10-02

2007-10-02

Lee, Andrew C. (Department: 2616)

Multiplex communications

Communication over free space

Combining or distributing information via code word channels...

C375S226000

Reexamination Certificate

active

10144183

ABSTRACT:
A process for determining a time lapse between a trigger signal and a start of a cyclic sequence of a pilot signal of a CDMA high frequency signal includes: simultaneously scanning and storing the trigger signal and the pilot signal; comparing the trigger signal with a trigger threshold to capture a time (ttrig) to reach the trigger threshold; comparing the trigger signal with a trigger threshold to capture a time (ttrig) to reach the trigger threshold; generating a CDMA baseband signal by transforming the CDMA high frequency signal into a complex baseband; correlating the CDMA baseband signal with a cyclic reference sequence to capture the time (tpn) up to the start of the cyclic sequence of the pilot signal; and subtracting ttrigfrom tpnto determine the lapse in time.

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Abstract of JP 2000307474 A, Michiaki et al., Nov. 2, 2000.

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