OFDM receiver apparatus

Details OFDM receiver apparatus OFDM receiver apparatus

2007-10-16

2007-10-16

Bocure, Tesfaldet (Department: 2611)

Pulse or digital communications

Receivers

C375S354000, C375S233000, C375S340000, C370S208000, C370S210000

Reexamination Certificate

active

10813014

ABSTRACT:
An OFDM receiver apparatus comprises a receiver to receive an OFDM signal, an estimator to estimate a distortion, a distortion compensator subjecting the sub-carrier to distortion compensation according to a control signal to generate a distortion-compensated sub-carrier, a demodulator to demodulate the distortion-compensated sub-carrier, an estimator to generate first phase distortion information, using the distortion-compensated sub-carrier and the distortion information, a weighting synthesizer to weight the first phase distortion information by weighting factors with time function over symbol intervals and then synthesize the first phase distortion information, to generate second phase distortion information, and a control signal generator to generate the control signal using the distortion information and the second phase distortion information.

REFERENCES:
patent: 5889759 (1999-03-01), McGibney
patent: 6862262 (2005-03-01), Imamura
patent: 6928120 (2005-08-01), Zhang
patent: 7058002 (2006-06-01), Kumagai et al.
patent: 2004/0101073 (2004-05-01), Doi
patent: 2000-286819 (2000-10-01), None
Yi-Hsin Yu et al., “A Joint Scheme of Decision-Directed Channel Estimation and Weighted Average Phase Error Tracking for OFDM WLAN System,” IEEE, Asain Pasific Conference, 204, pp. 985-988.

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