Coding a data stream

A method of decoding a coded data stream (WS1, WS2), in which coded data stream respective partitions of a given part of the coded data stream have been channel encoded with different error protection rates, the coded data stream further comprising length information (lf) concerning respective lengths of the respective partitions in the coded data stream, the method comprising:

• reading (40) the length information (lf), and
• channel decoding (31) the coded data stream (WS1, WS2) using the length information (lf) to obtain a decoded data stream (S1, S2).

An encoder for coding a data stream (S1, S2), the encoder comprising:

• a channel encoder (11) for channel coding respective partitions of a given part of the data stream with different error protection rates to obtain a coded data stream (WS1, WS2), and
• means (14, 20) for including length information (lf) concerning respective lengths of the respective partitions in the coded data stream (WS1, WS2).

A decoder for decoding a coded data stream (WS1, WS2), in which coded data stream respective partitions of a given part of the coded data stream have been channel encoded with different error protection rates, the coded data stream further comprising length information (lf) concerning respective lengths of the respective partitions in the coded data stream, the decoder comprising:

• means (40) for reading the length information, and
• means (31) for channel decoding the coded data stream (WS1, WS2) using the length information (lf) to obtain a decoded data stream (S1, S2).

A coded data stream (WS1, WS2) in which respective partitions of a given part of the coded data stream have been channel encoded with different error protection rates, the coded data stream further comprising length information (lf) concerning respective lengths of the respective partitions in the coded data stream