Serial concatenated convolutional codes: Difference between revisions

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'''Serial concatenated convolutional codes (SCCC)''' are a class of [[forward error correction]] (FEC) codes highly suitable for [[Turbo code|turbo]] (iterative) decoding.<ref name="Minoli2008">{{cite book|last=Minoli|first=Daniel|title=Satellite Systems Engineering in an IPv6 Environment|url=http://books.google.com/books?id=4yJi1UQDPp8C&pg=PA152|accessdate=4 June 2014|date=2008-12-18|publisher=CRC Press|isbn=9781420078695|pages=152–}}</ref><ref name="RyanLin2009">{{cite book|last1=Ryan|first1=William|last2=Lin|first2=Shu|title=Channel Codes: Classical and Modern|url=http://books.google.com/books?id=0gwqxBU_t-QC&pg=PA320|accessdate=4 June 2014|date=2009-09-17|publisher=Cambridge University Press|isbn=9781139483018|pages=320–}}</ref> Data to be transmitted over a noisy channel may first be encoded using an SCCC. Upon reception, the coding may be useused to remove any errors introduced during transmission. The decoding is performed by repeated decoding and [de]interleaving of the received symbols.

SCCCs typically include an [[inner code]], an [[outer code]], and a linking interleaver. A distinguishing feature of SCCCs is the use of a recursive [[convolutional code]] as the inner code. The recursive inner code provides the 'interleaver gain' for the SCCC, which is the source of the excellent performance of these codes.