| 摘要 |
A method and an apparatus for transceiving in an OFDMA(Orthogonal Frequency Division Multiple Access) system are provided to perform a low power operation by using a control signal as an IDFT(Inverse Discrete Fourier Transform). An apparatus for transceiving in an OFDMA system includes an FFT unit(423), conjugation operating units(425,427), a control channel modulator, an up-link coupler(431), and switching units(421,433,435). The FFT unit(423) processes data according to up and down transceiving by receiving data transmitted from the outside and conjugation operated up transmission data to perform Fourier transform. At least one conjugation operating unit(425,427) transmits data to be transmitted into the FFT unit by performing conjugation operation when up-transmitting and operates the output data of the FFT unit. The control channel modulator generates the control information of up data when transmitting the up data. The up-link coupler(431) selectively transmits one of the up data and the control information according to the predetermined timing. At least one switching unit(421,433,435) controls the path control of up and down transceiving data. |
