Multiplex communications – Communication over free space – Combining or distributing information via frequency channels
Reexamination Certificate
2005-06-14
2005-06-14
Vanderpuye, Kenneth (Department: 2661)
Multiplex communications
Communication over free space
Combining or distributing information via frequency channels
C370S203000, C370S208000, C375S260000
Reexamination Certificate
active
06907026
ABSTRACT:
A signal transmission system of an OFDM using a plurality of carriers to transmit signal comprises a transmitting apparatus and a receiving apparatus. The receiving apparatus comprises an input unit for applying the OFDM signal from the transmitting apparatus; a fast Fourier transforming unit for separating the OFDM signal from the input unit into base-band signals including pilot signals; an interpolation unit for interpolating the pilot signals in a time-axis direction and a frequency-axis direction to calculate reference signal vectors of the carriers in which the pilot signals are not included; a demodulation unit for decoding to be produced as information codes; a delay a unit for adjusting a delay time of said base-band signals passing the delay unit; and a control unit coupled with the interpolation unit, for changing frequency band characteristics of the interpolation unit.
REFERENCES:
patent: 5867478 (1999-02-01), Baum et al.
patent: 6091702 (2000-07-01), Saiki
patent: 6449245 (2002-09-01), Ikeda et al.
patent: 6515960 (2003-02-01), Usui et al.
patent: 6545997 (2003-04-01), Bohnke et al.
patent: 6567374 (2003-05-01), Bohnke et al.
patent: 6606296 (2003-08-01), Kokkonen
patent: 6678337 (2004-01-01), Sugita
patent: 6768713 (2004-07-01), Siala et al.
patent: 2001/0015954 (2001-08-01), Kuwabara et al.
patent: 1075226 (1998-03-01), None
patent: 10164162 (1998-06-01), None
patent: 11163822 (1999-06-01), None
patent: 11239115 (1999-08-01), None
patent: 200059269 (2000-02-01), None
Habte Zewdu
Hitachi Kokusai Electric Inc.
Mattingly ,Stanger ,Malur & Brundidge, P.C.
Vanderpuye Kenneth
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