| 摘要 |
PURPOSE: A circuit for synchronizing an orthogonal frequency divisional multiplexing system is provided to easily and exactly detect the synchronous code without using an additional memory. CONSTITUTION: A circuit for synchronizing an orthogonal frequency divisional multiplexing system includes a serial-parallel converter(410), a Fast Fourier transform(FFT) unit(420), a synchronous code detector(400) and a parallel-serial converter(430). The serial-parallel converter(410) converts the serial data to be transmitted to the receiving device into a parallel data. The Fast Fourier transform(FFT) unit(420) performs the FFT for the output data of the serial-parallel converter(410). The synchronous code detector(400) sets a predetermined synchronous code previously defined. And, the parallel-serial converter(430) receives the output data of the FFT unit(420) and the synchronous code previously set at the synchronous code detector(400) to convert the received data into a serial data. |
