CHANNEL ESTIMATION APPARATUS OF OFDM RECEIVER
PURPOSE: A channel estimation apparatus of an OFDM receiver is provided to compensate distortion of a signal through equalizing by presuming the response of a frequency channel by a multiple path fading channel. CONSTITUTION: A pilot extractor(102) extracts a pilot signal from a demodulated signal o...
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| Format: | Patent |
| Sprache: | eng ; kor |
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| Zusammenfassung: | PURPOSE: A channel estimation apparatus of an OFDM receiver is provided to compensate distortion of a signal through equalizing by presuming the response of a frequency channel by a multiple path fading channel. CONSTITUTION: A pilot extractor(102) extracts a pilot signal from a demodulated signal of an OFDM symbol which is FFT calculation. A LS(Least Square) channel estimator(103) presumes the LS channel of the extracted pilot signal. A correlation degree estimator(104) presumes correlation by using the LS channel estimation result of the pilot signal. A correlation matrix estimating unit(105) configures the correlation matrix by using the number of pilot which has high pilot. |
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