Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2005-08-30
2009-12-29
Liu, Shuwang (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C370S203000, C370S204000, C370S208000, C370S210000, C370S343000, C455S103000, C455S126000, C455S501000, C455S522000, C455S561000
Reexamination Certificate
active
07639748
ABSTRACT:
A method for fine timing synchronization is provided. The method comprises: detecting an end point of the short preamble; delivering the samples after the end point to a matched filter to generate a plurality of correlation peaks; searching the correlation peaks generated from the samples of the first LTS for a first maximal peak point which is the correlation peak with a first maximal intensity, and obtaining the first time index of the first maximal peak point; searching the correlation peaks generated from the samples of the first LTS for a pre-peak point which is the correlation peak forming a peak intensity appearing before and nearest to the first maximal peak point, and obtaining the second time index of the pre-peak point; estimating a third time index of the start point of the second LTS according to the first and second time indexes.
REFERENCES:
patent: 7280605 (2007-10-01), Cha
patent: 7298772 (2007-11-01), Neerudu et al.
patent: 7415059 (2008-08-01), Chadha et al.
patent: 2004/0170197 (2004-09-01), Mehta
Liu Shuwang
Patel Dhaval
Thomas Kayden Horstemeyer & Risley
Via Technologies Inc.
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