Apparatus and method for using training sequences to...

Details Apparatus and method for using training sequences to... Apparatus and method for using training sequences to...

2006-07-18

2006-07-18

Burd, Kevin (Department: 2631)

Pulse or digital communications

Synchronizers

C375S340000

Reexamination Certificate

active

07079613

ABSTRACT:
An apparatus and method is disclosed for estimating timing error in a digital signal receiver from a difference between an arrival time of a first training sequence and an arrival time of a second training sequence in the digital signal receiver. Time domain representations of the timing sequence data are converted into frequency domain representations and used to calculate a complex cross power spectrum. The timing error is obtained by determining an average phase of the complex cross power spectrum. The timing error is then used to calculate an accurate value for the clock rate of the digital signal transmitter.

REFERENCES:
patent: 6040800 (2000-03-01), Raith et al.
patent: 6184829 (2001-02-01), Stilp
patent: 2001/0046266 (2001-11-01), Rakib et al.
patent: 2002/0037028 (2002-03-01), Baltersee et al.
Heinrich Meyr, Marc Moeneclaey and Stefan Fechtel, “Digital Communication Receivers: Synchronization, Channel Estimation and Signal Processing”, John Wiley and Sons, New York, 1998.

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