Concatenated error correction code: Difference between revisions

Revision as of 15:56, 5 February 2010

Revision as of 15:59, 5 February 2010

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'''Outer Code : long blocks''' <br>

The larger symbol size of the Outer Code (typically a Reed-Solomon code) makes the outer code more robust to [[error burst|burst error]]s that may occur due to channel impairments. AndReed-Solomon becausecodes erroneoustypically outputexhibit ofbursty theerror convolutionalstate code itself is typically bursty. Additionallyconditions, anbut [[interleaving]]this layermisbehaviour maycan be usedturned thatto spreadsadvantage burstwith errors across athe widerconcatenation rangemethod.

Additionally, an [[interleaving]] layer may be used that spreads burst errors across a wider range.

The combination of an inner ''Viterbi convolutional code'' with an outer ''Reed-Solomon code'' (known as an RSV code) became the most popular construction use of code concatenation.