Receiver for receiving data in a broadcast system using redundancy data

A receiver for receiving data, comprising:

• a receiver configured to receive, via a transmission system, a receiver input data stream comprising a plurality of channel symbols represented by constellation points in a constellation diagram;
• a demodulator configured to demodulate the channel symbols into codewords;
• a decoder configured to decode the codewords into output data words;
• a selection circuitry configured to select, if demodulation of a channel symbol and/or decoding of a codeword is erroneous or likely to fail, one of at least two redundancy data sources providing redundancy data at different redundancy data rates via a broadband system for correct demodulation and decoding by use of the originally received channel symbol and additional redundancy data;
• and
• a broadband receiver configured to obtain the redundancy data via the broadband system;
• wherein the demodulator and/or the decoder is configured to use the obtained redundancy data to demodulate the respective channel symbols and to decode the respective codewords, respectively, and
• wherein the selection circuitry is configured to select a redundancy data source based on a redundancy data source address list indicating addresses of the at least two redundancy data sources and to request the redundancy data by forwarding a request to the selected redundancy data source.

A broadband server for providing redundancy data to a receiver via a broadband system, comprising:

• data receiving circuitry configured to receive data from a transmitter;
• data conversion circuitry configured to convert the received data into at least two redundancy data streams of redundancy data having different redundancy data rates;
• at least two redundancy data sources each configured to provide one of the at least two redundancy data streams at the different redundancy data rate for use by a receiver for correct demodulation and decoding by use of the redundancy data and data received by the receiver;
• and
• signaling circuitry configured to signal a redundancy data source address list for use by the receiver to select a redundancy data source and to send a request to the selected redundancy data source, the redundancy data source address list indicating addresses of the at least two redundancy data sources.

A receiving method for receiving data, comprising:

• receiving, via a transmission system, a receiver input data stream comprising a plurality of channel symbols represented by constellation points in a constellation diagram;
• demodulating the channel symbols into codewords;
• decoding the codewords into output data words;
• selecting or requesting via a broadband system, if demodulation of a channel symbol and/or decoding of a codeword is erroneous or likely to fail, redundancy data for demodulation of the channel symbols and/or decoding of the codewords;
• and
• obtaining the redundancy data via the broadband system;
• wherein the demodulating and/or the decoding is configured to use the obtained redundancy data to demodulate the channel symbols and to decode the codewords, respectively, and
• wherein the selecting includes selecting a redundancy data source based on a redundancy data source address list indicating addresses of at least one redundancy data source and to request the redundancy data by forwarding a request to the selected redundancy data source.

A receiving method for receiving data, comprising:

• receiving, via a transmission system, a receiver input data stream comprising a plurality of channel symbols represented by constellation points in a constellation diagram;
• demodulating the channel symbols into codewords;
• decoding the codewords into output data words;
• selecting, if demodulation of a channel symbol and/or decoding of a codeword is erroneous or likely to fail, one of at least two redundancy data sources providing redundancy data at different redundancy data rates via a broadband system for correct demodulation and decoding by use of the originally received channel symbol and additional redundancy data;
• and
• obtaining the redundancy data via the broadband system;
• wherein the demodulating and/or the decoding is configured to use the obtained redundancy data to demodulate the respective channel symbols and to decode the respective codewords, respectively, and
• wherein the selecting includes selecting a redundancy data source based on a redundancy data source address list indicating addresses of the at least two redundancy data sources and requesting the redundancy data by forwarding a request to the selected redundancy data source.

A method for providing redundancy data to a receiver of a transmission system, comprising:

• receiving data from a transmitter of a transmission system;
• converting the received data into at least two redundancy data streams of redundancy data having different redundancy data rates;
• providing the at least two redundancy data streams at a different redundancy data rate for use by a receiver of the transmission system for correct demodulation and decoding by use of the redundancy data and data received by the receiver via the transmission system;
• and
• signaling a redundancy data source address list for use by the receiver to select a redundancy data source and to send a request to the selected redundancy data source, the redundancy data source address list indicating addresses of the at least two redundancy data sources.