| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a wireless system of an SC-FDMA scheme without decreasing power efficiency and frequency utilization efficiency by performing subcarrier mapping capable of dealing with a plurality of users and making CP transmission needless. <P>SOLUTION: There is provided a wireless system where, in a transmission apparatus: an encoding section 11 encodes transmission data; an inter-leaver 12 carries out inter-leaving; a modulation section 13 carries out modulation; a K-FFT section 14 carries out discrete Fourier transform by K points; a subcarrier mapping section 15 carries out serial/parallel conversion in an S/P converter 141, carries out discrete Fourier transform by the K points in a K-FFT section 142, performs processing to carry out mapping on a subcarrier in a subcarrier mapping processing section 143, carries out inverse discrete Fourier transform by M points larger than the K points in an M-IDFT section 144, and carries out parallel/serial conversion in a P/S converter 145; and an M-IFFT section 16 carries out inverse discrete Fourier transform by the M points. <P>COPYRIGHT: (C)2012,JPO&INPIT |
