Importance

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Abstract

A circuit for synchronizing symbols of a received OFDM signal includes a unit configured to detect cross-correlation of a received signal to generate a value of the cross-correlation, a unit configured to obtain synchronous summation of the value of the cross-correlation performed at predetermined intervals, a unit configured to obtain received electric power of the received signal, an autocorrelation electric power obtaining unit configured to obtain autocorrelation electric power of the received signal, a threshold obtaining unit configured to obtain a synchronous summation threshold responsive to the received electric power, and a symbol timing detecting unit configured to identify timing of a peak of the synchronous summation as symbol timing in response to detecting, at the timing of the peak, that the autocorrelation electric power is smaller than the received electric power multiplied by a predetermined factor and that the synchronous summation is larger than the synchronous summation threshold.

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First Claim