Adaptation of guard interval lengths in an OFDM communication system

摘要

These transmission and reception methods and devices make it possible to automatically adjust (64) the value of the guard time to be complied with between two successive blocks of data to be transmitted, according to the quality of reception of the data, by virtue of a marking signal, inserted (22) in the data, the marking signal, determined on reception, representing the value of the guard time to be complied with on transmission. They apply to the transmission of OFDM symbols. <IMAGE> <IMAGE> <IMAGE>