Pulse or digital communications – Spread spectrum – Direct sequence
Reexamination Certificate
2011-05-24
2011-05-24
Puente, Eva Y (Department: 2611)
Pulse or digital communications
Spread spectrum
Direct sequence
C375S260000, C375S326000, C375S343000, C370S343000, C370S335000, C370S203000, C370S210000
Reexamination Certificate
active
07949034
ABSTRACT:
Provided is an apparatus and method for estimating an uplink frequency offset in a wireless communication system. In a receiving apparatus of a wireless communication system using a random access channel composed of two equivalent sequences, the apparatus includes a channel receiver which extracts samples corresponding to the two sequences from an input random access channel signal; a correlator which computes first and second correlation values by correlating preceding and trailing samples among the samples output from the channel receiver with a predetermined sequence; and a frequency offset estimator which estimates a frequency offset by using a ratio of the second correlation value to the first correlation value output from the correlator.
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Cho Jae-Weon
Cho Young-Kwon
Choi Ho-Kyu
De Carvalho Elisabeth
Jeong Su-Ryong
Puente Eva Y
Samsung Electronics Co,. Ltd
The Farrell Law Firm P.C.
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