Serially concatenated block (product) codes are brothers and rivals of turbo codes

data block

row

check

column check

double

check

block coding in the x direction

block

coding

in the

y

direction

Kr

Kc

Nr

Nc

constituent

SISO

(Fang-Buda,

Chase,...)

decoder 1

decoded data block

constituent

SISO

(Fang-Buda,

Chase,...)

decoder 2

log-likelihood

for the set of nearest

codewords

product decoder

product coder

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