TRANSMITTING APPARATUS, RECEIVING APPARATUS, TRANSMITTING METHOD, RECEIVING METHOD, INFORMATION RECORDING MEDIUM AND PROGRAM

摘要

A transmitting apparatus (101) wherein a modulating part (102) modulates, based on an adaptive modulation command based on feedback information transmitted from a receiving end, an encoded data; frequency symbol spread blocks (105) multiply a plurality of signals, which are outputted by a serial-parallel conversion part (104), by a quadrature spread code for combination; pseudo random number multiplying parts (106) multiply the respective signals by a pseudo random number; an inverse Fourier transform part (107) performs an inverse Fourier transform process; a parallel-serial conversion part (108) performs a parallel-serial conversion; a guard interval addition part (109) adds a guard interval to the parallel-serial converted signal; and a transmitting part (110) transmits the resultant signal. In this way, each of the frequency symbol spread blocks (105) requires only one piece of feedback information and only one piece of modulation level information, resulting in an improved transmission rate.