Orthogonal frequency division multiplexing (OFDM) receiver

Details Orthogonal frequency division multiplexing (OFDM) receiver Orthogonal frequency division multiplexing (OFDM) receiver

2005-11-29

2009-12-01

Liu, Shuwang (Department: 2611)

Pulse or digital communications

Systems using alternating or pulsating current

Plural channels for transmission of a single pulse train

C375S150000, C370S208000, C370S210000, C370S331000, C370S332000, C455S063100, C455S065000, C455S059000, C455S024000

Reexamination Certificate

active

07627047

ABSTRACT:
An OFDM receiver apparatus mounted on a movable object for receiving an OFDM signal, includes a plurality of directional antennas which receive an OFDM signal, an estimator to estimate a center frequency of a spectrum of a Doppler component from one of the received signals or a multiplexed signal obtained by multiplexing the received signals, a shift quantity calculator to calculate a shift quantity from the estimated center frequency of the estimator and directivity information representing directivity directions of the directional antennas, a plurality of frequency shifters to subject the received signals to frequency shift according to the shift quantity to compensate for Doppler shift, a combining unit to diversity-combine frequency shifted signals of the frequency shifters, and a demodulator/decoder to demodulate and decode combining diversity signals of the combining unit.

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