Multiplex communications – Generalized orthogonal or special mathematical techniques – Particular set of orthogonal functions
Reexamination Certificate
2005-09-13
2005-09-13
Kizou, Hassan (Department: 2662)
Multiplex communications
Generalized orthogonal or special mathematical techniques
Particular set of orthogonal functions
C370S210000, C375S149000
Reexamination Certificate
active
06944122
ABSTRACT:
An input of an OFDM signal containing known pilot carriers among given subcarriers is separated into subcarriers through Fourier transform in a fast Fourier transform unit. A data carrier phase error estimating unit obtains an amount of phase correction of each subcarrier on the basis of the pilot carriers in the separated subcarriers. A data carrier phase correcting unit corrects the phase of the separated subcarrier signal on the basis of the amount of phase correction. Thus, the phase errors of the subcarriers can be corrected and the OFDM symbols can be demodulated even if a frequency error and a timing error are occurring between the transmitter and receiver.
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Harada Yasuo
Hayashino Hiroshi
Nakahara Hideki
Shirakata Naganori
Tanaka Koichiro
Kizou Hassan
Levitan Dmitry
Wenderoth , Lind & Ponack, L.L.P.
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