Method and device for estimating the relative drift between...

Details Method and device for estimating the relative drift between... Method and device for estimating the relative drift between...

2011-03-29

2011-03-29

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Synchronizers

C375S265000, C375S341000

Reexamination Certificate

active

07916818

ABSTRACT:
A method is for estimating drift between a first clock used in a digital transmission processing of a first Ultra Wide Band (UWB) pulse train signal and a second clock used in a digital reception processing of a second UWB pulse train signal resulting from a transmission of the first UWB pulse train signal. The method may include sampling the second UWB pulse train signal, and calculating trellis information representative of a trellis having reference paths respectively associated to different reference values of the drift and including sample transitions of a sampled third signal from the sampled second UWB pulse train signal. The method may further include processing the sampled third signal along the trellis for obtaining a path metric for each processed reference path, and selecting the processed reference path having a greatest path metric, the drift being the reference value associated to the selected processed reference path.

REFERENCES:
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patent: 6408420 (2002-06-01), Todoroki
patent: 6532567 (2003-03-01), Ino
patent: 2004/0101040 (2004-05-01), Agazzi
patent: 2004/0133843 (2004-07-01), Yamakawa
patent: 2004/0202203 (2004-10-01), Kolze et al.

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