OFDM receiver using time-domain and frequency-domain...

Details OFDM receiver using time-domain and frequency-domain... OFDM receiver using time-domain and frequency-domain...

2011-01-11

2011-01-11

Kim, Kevin Y (Department: 2611)

Pulse or digital communications

Equalizers

Reexamination Certificate

active

07869495

ABSTRACT:
An orthogonal frequency division multiplexing (OFDM) receiver capable of improving equalization performance is provided. In the OFDM receiver receiving an OFDM signal having a frame structure constructed with one reference symbol and a plurality of data symbols following the reference symbol, the OFDM receiver includes: a synchronizer which detects a position of the reference symbol from the received OFDM signal; a time-domain equalizer which equalizes in a time domain the data symbols that are separated by a distance longer than a predetermined distance from the position of the reference symbol; an FFT (fast Fourier transform) unit which performs an FFT process on the OFDM signal; and a frequency-domain equalizer which equalizes in a frequency domain the data symbols that are separated by a distance shorter than a predetermined distance from the position of the reference symbol.

REFERENCES:
patent: 6628704 (2003-09-01), Long et al.
patent: 10-2004-0110341 (2004-12-01), None
Korean Intellectual Property Office, Office Action mailed Jan. 24, 2008.

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