Abstract: A transmitting apparatus and a transmitting method wherein the systematic bit reception quality can be improved and the throughput performance can be improved. An IR parameter control part (101) controls, based on the number of retransmissions, the ratio of systematic bits to parity bits in mapping them to packets, and controls to map a parity bit to an initially transmitted packet, while mapping a systematic bit to a retransmitted packet. An encoding part (102) generates the systematic bits and parity bits and maps them to the packets in accordance with the IR parameters. A transmission power calculating part (105) calculates, based on reception quality information of the initially transmitted packet fed back from a receiving end, the transmission power of the transmitted packet to which the systematic bit is mapped.

Abstract: There is provided a signal processing apparatus and a signal processing method, which can simultaneously perform reduction in jitter components and reduction in error rate. A signal processing apparatus for processing a signal by a PRML method is provided with an A/D converter (4) for converting an analog signal into a digital signal; a first waveform equalizer (14) which is connected to the A/D converter (4), and amplifies a specific band of a signal to optimize data of a clock extraction system; a second waveform equalizer (15) which is connected to the A/D converter (4), and amplifies the specific band of the signal and performs waveform equalization to optimize data of a data processing system; a timing recovery logic circuit (11) which is connected to the first waveform equalizer (14), and extracts a reproduction clock; and a decoder (16) which is connected to the second waveform equalizer (15), and decodes data.