AC TRANSMISSION/RECEPTION METHOD FOR OFDM TRANSMISSION SYSTEM, TRANSMITTING APPARATUS AND RECEIVING APPARATUS

摘要

PROBLEM TO BE SOLVED: To overcome a problem of a conventional AC transmission/reception method for the OFDM transmission system that some difficulties are caused when applying this method to an audio signal transmission-back or the like and in the production of a relay program because of production of a frame delay causing a transmission delay of 100 ms or over when an audio signal subjected to error correction similar to the case of the TMCC is transmitted through an AC(Auxiliary Channel) of a ground digital broadcast. SOLUTION: In the transmission of an audio signal through the use of the AC of the ground digital broadcast, the configuration of an AC packet is designated by a bit placed in the vicinity of the head of a frame, and a parity bit for error correction in the unit of frames is not transmitted.