Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2006-01-25
2009-08-18
Wang, Ted (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
C375S233000, C375S316000, C375S326000, C375S327000, C375S340000
Reexamination Certificate
active
07577206
ABSTRACT:
An Orthogonal Frequency Division Multiplexing (OFDM) signal receiving apparatus and method of estimating a common phase error (CPE) using data subcarriers (and pilot subcarriers) instead of only pilot subcarriers. In the OFDM signal receiver, a channel measurement unit estimates a channel from a fast-Fourier-transformed signal to generate information about good subcarrier indexes as channel state information (CSI). A Common Phase Error (CPE) estimation unit estimates good pilot subcarriers and good data subcarriers from an equalized signal output from an equalizer (EQ) based on the channel state information (CSI), calculates the first and second common phase errors from the estimated pilot and data subcarriers respectively, and combines the first and second common phase errors to generate a final common phase error.
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F. Chau & Associates LLC
Samsung Electronics Co,. Ltd.
Wang Ted
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