Data message bit synchronization and local time correction...

Details Data message bit synchronization and local time correction... Data message bit synchronization and local time correction...

2005-08-23

2005-08-23

Tran, Khai (Department: 2637)

Pulse or digital communications

Spread spectrum

Direct sequence

C342S357490

Reexamination Certificate

active

06934322

ABSTRACT:
Methods and architectures for data message bit synchronization of a spread spectrum signal having a repeating sequence of pseudorandom code bits modulated with data message bits having a data bit time that is an integer number of a repeat time of the pseudorandom code bits. In one embodiment, an adjusted bit sync offset time is determined for each of a plurality of signals for which bit sync offset time is not known based on a corresponding clock error corrected propagation time for each signal, based on a known bit synch offset time and based on a clock error corrected propagation time of the signal for which bit synch offset time is known.

REFERENCES:
patent: 5420593 (1995-05-01), Niles
patent: 5506861 (1996-04-01), Bottomley
patent: 5663734 (1997-09-01), Krasner
patent: 5893044 (1999-04-01), King et al.
patent: 5982324 (1999-11-01), Watters et al.
patent: 6532251 (2003-03-01), King et al.
patent: 6775319 (2004-08-01), King et al.

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