| 摘要 |
The present invention relates to a transmitter (10) and to a corresponding transmission method for broadcasting data in a broadcasting system. To enable a receiver in such a broadcasting system, in particular a moving receiver, to improve the decoding quality, if needed, a transmitter (10) is proposed comprising: - a data input for receiving at least one transmitter input data stream (11,12, ..., In) segmented into input data words (D), - an encoder (14; 141, 142, 143) for error correction code encoding the input data words (D) into codewords (Zl, Z2,Z3, ZA), a codeword comprising a basic codeword portion (B) and an auxiliary codeword portion (A), wherein said encoder (14) is adapted for generating said basic codeword portion (B) from an input data word (D) according to a first code and for generating said auxiliary codeword portion (A) from an input data word (D) according to a second code, said basic codeword portion (B) being provided for regular decoding and said auxiliary codeword portion (A) being provided as incremental redundancy if regular decoding of the codeword by use of the basic codeword portion (B) is erroneous, - a data mapper (16) for mapping the codewords (Zl, 22, 23, 24) onto fi-ames of a transmitter output data stream (01, and - a transmitter unit (1 8) for transmitting said transmitter output data stream (0). |
