Symbol-by-symbol APP decoding based on supercode decoding
Jürgen Freudenberger, Uwe Kaiser · Repository for Publications and Research Data (ETH Zurich) · 2012
An efficient sub-optimum symbol-by-symbol soft in/soft-out a posteriori probability (APP) decoding algorithm for linear binary block codes is presented.The three-step decoding procedure consists of: 1) list decoding of two supercodes, 2) calculating the intersection of these two lists, and 3) symbol-bysymbol APP decoding for the intersection.The presented results indicate that the proposed decoding procedure obtains good estimates of the ideal soft-output values and reduces the decoding complexity significantly.It may be an attractive alternative to conventional implementations of APP decoding.