Patent ID: 8027397
Filing Date: 2011-09-27
Classification: H04L

Abstract:
1. A device for generating an orthogonal frequency division multiplexing (OFDM) symbol, the device comprising: a complex number separating unit for separating a plurality of digital-modulated symbols as a real part symbol group and an imaginary part symbol group; a discrete cosine transform (DCT) unit for performing a DCT operation of the real part symbol group, and generating a DCT symbol group; a discrete sine transform (DST) unit for performing a DST operation for the imaginary part symbol group, and generating a DST symbol group; a complex number combining unit, coupled to outputs of the DCT and DST units, for combining the DCT symbol group and the DST symbol group respectively generated by the DCT and DST units, and outputting a complex symbol group; an inverse fast Fourier transform (IFFT) unit, coupled to an output of the complex number combining unit, for performing an IFFT operation for the complex symbol group output by the complex number combining unit, and generating an IFFT symbol group; and an analog converter for converting the IFFT symbol group generated by the IFFT unit into an analog signal, and generating the OFDM symbol.