Pulse or digital communications – Synchronizers – Frequency or phase control using synchronizing signal
Reexamination Certificate
2005-06-28
2005-06-28
Phu, Phuong (Department: 2631)
Pulse or digital communications
Synchronizers
Frequency or phase control using synchronizing signal
C375S364000, C375S362000, C375S260000, C375S366000, C370S514000
Reexamination Certificate
active
06912262
ABSTRACT:
A method and apparatus for time-shift extraction in a wideband transmitted signal containing strong narrowband interference or noise. The time-shift extraction is based on the time domain and frequency domain relation of symbol misalignment. The invention uses the sign of the product of a recieved signal sample and a reference symbol in the frequency domain to determine the time-shift. It does not rely on the signal magnitude and is therefore less dependent on the signal gain. It also does not rely on the soft phase values, which have ambiguity for values more than three hundred sixty (360) degrees.
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Alavi Hossein
Chini Ahmad
Kilani Mehdi T.
Omidi Mohammad J.
Blakely , Sokoloff, Taylor & Zafman LLP
Maxim Integrated Products Inc.
Phu Phuong
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