TRANSMISSION OF A DATA STREAM USING OFDM SYMBOLS AT TWO CARRIER FREQUENCIES WITH OVERLAPPING CONTROLLING DATA TRANSMISSION FRAMES OF A COMMENSURABLE DURATION

摘要

The invention relates to a method for transmitting a data stream in a digital transmission system, said stream being transmitted in a send signal with sequential OFDM symbols. According to the invention, a number of OFDM symbols are combined in a data transmission frame and a number of data transmission frames are transmitted in a controlling data transmission frame, each controlling data transmission frame having an information block comprising one or more OFDM symbols in a defined position in the controlling data transmission frame. A first send signal (6) comprising a first data stream is transmitted in a first carrier frequency range and a second send signal comprising a second data stream that contains the same information content as the first data stream is transmitted in a second carrier frequency range. The duration of the controlling data transmission frame of the first send signal (6) is a whole-numbered multiple of the duration of the controlling data transmission frame of the second send signal.