Pulse or digital communications – Receivers
Reexamination Certificate
2011-06-14
2011-06-14
Fan, Chieh M (Department: 2611)
Pulse or digital communications
Receivers
C375S326000, C375S339000, C375S340000, C375S342000, C375S343000, C375S344000, C375S354000, C375S362000, C030S208000
Reexamination Certificate
active
07961816
ABSTRACT:
A device for signal synchronization in a communication system is configured to perform a first sliding correlation for a received signal and a pseudo-random noise (PN) sequence to obtain information on symbol timing, identify a fractional carrier frequency offset (FCFO) using the information on symbol timing and the cyclic extension property of the PN guard interval (GI), and provide a first product by multiplying the received signal with the FCFO. The device is also configured to provide a set of second products by multiplying the first product with each of a set of phases related to integral carrier frequency offsets (ICFOs), perform a second sliding correlation for the PN sequence and each one of the set of the second products to thereby provide a set of peak values, and identify an ICFO by detecting an index number of a maximal value among the set of peak values.
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Alston & Bird LLP
Fan Chieh M
Industrial Technology Research Institute
Vlahos Sophia
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