Instantons causing iterative decoding to cycle
نویسنده
چکیده
It is speculated that the most probable channel noise realizations (instantons) that cause the iterative decoding of lowdensity parity-check codes to fail make the decoding not to converge. A simple example is given of an instanton that is not a pseudo-codeword and causes iterative decoding to cycle. A method of finding the instantons for large number of iterations is presented and tested on Tanner’s [155,64,20] code and Gaussian channel. The inherently dynamic instanton with effective distance of 11.475333 is found.
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عنوان ژورنال:
- CoRR
دوره abs/1108.5547 شماره
صفحات -
تاریخ انتشار 2011