OFDM demodulator, receiver, and method

Details OFDM demodulator, receiver, and method OFDM demodulator, receiver, and method

2007-01-26

2010-02-16

Wang, Ted M (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S229000, C375S316000, C375S324000, C375S340000

Reexamination Certificate

active

07664189

ABSTRACT:
An orthogonal frequency division multiplexing (OFDM) demodulator demodulates an OFDM signal constituted by OFDM symbols each including at least an effective symbol and a scattered known signal. The OFDM demodulator includes a Fourier transform performing unit, a known signal extracting unit, a time dimension interpolation unit, a delay spread generating unit, a frequency dimension interpolation unit, and a waveform equalizing unit. The delay spread generating unit employs a time difference between a time point for a starting position of the Fourier transform operation performed by the Fourier transform performing unit and a time point at which a latest arriving path arrived as the delay spread.

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