Pulse or digital communications – Systems using alternating or pulsating current – Plural channels for transmission of a single pulse train
Reexamination Certificate
2011-04-19
2011-04-19
Payne, David C (Department: 2611)
Pulse or digital communications
Systems using alternating or pulsating current
Plural channels for transmission of a single pulse train
Reexamination Certificate
active
07929621
ABSTRACT:
A terminal demodulation apparatus previously stores a received frame signal in a memory before inputting the same into a fast Fourier transform (FFT) unit, performs a demodulation to necessary information read from the corresponding memory, and has a separate data subcarrier memory and pilot subcarrier memory, and uses the signal demodulation method mixed with a subcarrier allocation method so as to easily demodulate various subcarrier allocation methods.
REFERENCES:
patent: 6842421 (2005-01-01), Sarraf et al.
patent: 6912682 (2005-06-01), Aoki
patent: 1020050051746 (2005-06-01), None
Saverio Cacopardi et al., High End Implementation of DVB-T OFDM Demodulator Using General Purpose DSPs, 1998 IEEE, pp. 382-383.
Jung Jae-Gun
Kim Dae-Ho
Kim Jun-Woo
Park Hyeong-Sook
Park Youn-Ok
Electronics and Telecommunications Research Institute
Haider Syed
Hanaro Telecom, Inc.
KT Corporation
Payne David C
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