Orthogonal frequency division multiplexing receiver

Details Orthogonal frequency division multiplexing receiver Orthogonal frequency division multiplexing receiver

2008-05-30

2011-11-15

Tran, Khai (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

Reexamination Certificate

active

08059736

ABSTRACT:
In one aspect, an orthogonal frequency division multiplexing (OFDM) receiver includes an offset compensator, a fast Fourier transform (FFT) block, a control unit, a channel impulse response estimation block, and a sampling offset estimation block. The offset compensator is configured to receive a digital input signal and a sampling offset, and to convert the digital input signal into a baseband signal in accordance with the sampling offset. The fast Fourier transform (FFT) block is configured to perform an FFT operation of the base band signal output from the offset compensator and to output a corresponding FFT result. The control unit is configured to generate OFDM symbol information and a plurality of control signals based on the FFT result. The channel impulse response estimation block is configured to periodically generate receiving channel impulse response information of a receiving channel based on the FFT result. The sampling offset estimation block is configured to generate the sampling offset based on the FFT result, the receiving channel impulse response information, the OFDM symbol information, and the plurality of control signals.

REFERENCES:
patent: 7088672 (2006-08-01), Kim
patent: 7227834 (2007-06-01), Barton et al.
patent: 7684359 (2010-03-01), Kim et al.
patent: 2006/0176802 (2006-08-01), Ko et al.
patent: 2007/0211809 (2007-09-01), Kim
patent: 2000-295195 (2000-10-01), None
patent: 1020060016580 (2006-02-01), None

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