System and method for receiving OFDM signal

Details System and method for receiving OFDM signal System and method for receiving OFDM signal

2007-03-27

2007-03-27

Ha, Dac V. (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S340000, C375S355000, C370S203000, C370S330000, C370S480000

Reexamination Certificate

active

10029037

ABSTRACT:
A system for receiving an OFDM signal. An AD converter samples a received signal at a first sampling rate. A low pass filter removes noise from a signal outputted from the AD converter. A rate converter extracts data from a signal outputted from the low pass filter at a second sampling rate. An OFDM signal decoding circuit converts and decodes a signal outputted from the rate converter from a time domain to a frequency domain. An error correction circuit corrects errors of a signal outputted from the OFDM signal decoding circuit. The low pass filter varies its frequency characteristic in response to said first sampling rate.

REFERENCES:
patent: 6512798 (2003-01-01), Akiyama et al.
patent: 6711221 (2004-03-01), Belotserkovsky et al.
patent: 2 344 729 (2000-06-01), None
patent: 4-72905 (1992-03-01), None
patent: 2001-24619 (2001-01-01), None
patent: 3183659 (2001-04-01), None

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