Fast Fourier Transmitter processor Fast Fourier Transmitting method and Orthogonal Frequency Division Multiplexing receiving device having the same

摘要

PURPOSE: An FFT processor, an FFT method using the same, and an OFDM receiver having the same are provided to reduce a period of time for processing an OFDM signal by using a structure of a parallel memory. CONSTITUTION: An FFT processor includes a timing acquisition unit, a controller, a signal conversion unit, and a frequency domain equalizer. The timing acquisition unit(210) detects an end point of a long preamble and outputs a detected timing signal. The controller(230) outputs the first and the second control signals in response to the timing signal. The signal conversion unit(220) stores the long preamble in response to the first control signal, performs an FFT process for the stored long preamble, performs the FFT process for plural data, outputs the stored preamble, and stores the transformed data. The frequency domain equalizer(240) is used for synchronizing the converted long preamble and the converted data in response to the second control signal and outputting the synchronized long preamble and data.