Transmission of a data stream using OFDM symbols at two carrier frequencies having overlapping superframes of a commensurable time duration

A method for switching reception between two received signals including OFDM symbols, comprising:

• combining a number of OFDM symbols in a transmission frame;
• transmitting a number of transmission frames in one transmission superframe, each transmission superframe having an information block having at least one OFDM symbol at an established position of the transmission superframe;
• and
• switching between reception of a first of the received signals and reception of a second of the received signals during a time period in which an information block is transmitted both in the first and in the second received signal,
• wherein a transmitted information is received in the information blocks of the second received signal which states with which information blocks of the second transmission superframe the information block of the first transmission superframe is transmitted simultaneously.

A method for switching reception between two received signals including OFDM symbols, comprising:

• combining a number of OFDM symbols in a transmission frame;
• transmitting a number of transmission frames in one transmission superframe, each transmission superframe having an information block having at least one OFDM symbol at an established position of the transmission superframe;
• and
• switching between reception of a first of the received signals and reception of a second of the received signals during a time period in which an information block is transmitted both in the first and in the second received signal,
• wherein, directly after the switching between the received signals, a channel estimate is carried out with the aid of pilot signals including information blocks that are provided in the first and in the second received signal.

A reception device in a digital transmission system for receiving a received signal, comprising:

• a reception unit configured to receive a first received signal in a first carrier frequency range and a second received signal in a second carrier frequency range, the received signals including OFDM symbols, in each case, a number of OFDM symbols combined in one transmission frame, a number of transmission frames are included in one transmission superframe, each transmission superframe having an information block having at least one OFDM symbol in an established position of the transmission superframe;
• and
• a switching device configured to carry out a switching between reception of the first and the second received signal, the switching device configured to carry out the switching between the received signals during a time period defined in that an information block is transmitted both in the first and in the second received signal,
• a detection unit configured to evaluate transmitted information included in the information block of the second received signal, the transmitted information at least states at which information blocks of the second received signal the information block of the first received signal is transmitted in an at least partially overlapping manner, the detection unit adapted to control the switching device to carry out a switching between the received signals, while the information block is transmitted in both received signals.

A transmitting device for transmitting a data stream in a digital transmission system, the data stream transmitted in a transmitted signal using successive OFDM symbols, in each case, a number of OFDM symbols combined in one transmission frame, a number of transmission frames combined in one transmission superframe, the transmission superframe having an information block having at least one OFDM symbol in an established position of the transmission superframe, comprising:

• a first transmitting unit configured to transmit a first data stream in a first carrier frequency range;
• a second transmitting unit configured to transmit a second data stream in a second carrier frequency range, the first and the second transmission unit adjusted to each other such that a time duration of the transmission superframe of the first transmitted signal is set to an integer multiple of a time duration of the transmission superframe of the second transmitted signal;
• and
• a synchronization unit configured to adjust the transmission superframes of the first transmitted signal and the transmission superframes of the second transmitted signal to each other such that the information blocks of the transmission superframes of the first transmitted signal and at least one of the information blocks of the transmission superframes of the second transmitted signal overlap in time.