Receiver for receiving data in a broadcast system using redundancy data
First Claim
1. A receiver for receiving data, comprising:
- a broadcast receiver configured to receive, via a broadcast 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 said channel symbols into codewords;
a decoder configured to decode said codewords into output data words;
a broadband receiver configured to obtain redundancy data via a broadband system, said redundancy data for a channel symbol including a constellation subset identifier indicating a subset of constellation points corresponding to the constellation point representing the channel symbol;
wherein said demodulator and/or said decoder is further configured to combine said redundancy data with said receiver input data stream to demodulate the respective channel symbol and to decode the respective codeword, respectively, andthe redundancy data is less than an entirety of the channel symbol.
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Abstract
A receiver for receiving data in a broadcast system includes a broadcast receiver that receives, via the broadcast system, a receiver input data stream including plural channel symbols represented by constellation points in a constellation diagram. A demodulator demodulates the channel symbols into codewords and a decoder decodes the codewords into output data words. A broadband receiver obtains redundancy data via a broadband system, the redundancy data for a channel symbol including one or more least robust bits of the channel symbol or a constellation subset identifier indicating a subset of constellation points including the constellation point representing the channel symbol. The demodulator and/or the decoder is configured to use the redundancy data to demodulate the respective channel symbol and to decode the respective codeword, respectively.
20 Citations
14 Claims
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1. A receiver for receiving data, comprising:
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a broadcast receiver configured to receive, via a broadcast 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 said channel symbols into codewords; a decoder configured to decode said codewords into output data words; a broadband receiver configured to obtain redundancy data via a broadband system, said redundancy data for a channel symbol including a constellation subset identifier indicating a subset of constellation points corresponding to the constellation point representing the channel symbol; wherein said demodulator and/or said decoder is further configured to combine said redundancy data with said receiver input data stream to demodulate the respective channel symbol and to decode the respective codeword, respectively, and the redundancy data is less than an entirety of the channel symbol. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14)
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11. A receiving method for receiving data, comprising:
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receiving, via a broadcast system, a receiver input data stream comprising a plurality of channel symbols represented by constellation points in a constellation diagram; demodulating said channel symbols into codewords; decoding said codewords into output data words; obtaining redundancy data via a broadband system, said redundancy data for a channel symbol including a constellation subset identifier indicating a subset of constellation points corresponding to the constellation point representing the channel symbol; wherein said demodulating and/or said decoding is configured to combine said redundancy data with the receiver input data stream to demodulate the respective channel symbol and to decode the respective codeword, respectively, and the redundancy data is less than an entirety of the channel symbol. - View Dependent Claims (12)
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Specification