Patent ID: 7746762

Claim:
A transmitting apparatus comprising: a coding section that encodes a transmit signal and outputs systematic bit data and parity bit data; a spreading section that performs spreading processing of the systematic bit data and the parity bit data, with a spreading ratio of “1”; a multiplexing section that code-multiplexes the systematic bit data and the parity bit data subjected to spreading processing in said spreading section, with a code multiplexing number of “1”; an insertion section that inserts a first guard interval in the systematic bit data code-multiplexed in said multiplexing section and inserts a second guard interval in the parity hit data code-multiplexed in said multiplexing section; and a control section that sets a length of the first guard interval longer than a length of the second guard interval and lengthens the length of the first guard interval in accordance with an increase in a number of retransmissions of the systematic bit data and the parity bit data.