Turbo Code Reader

The AFF3CT simulator can dump the internal values (alpha, beta and gamma) from the Turbo code encoder/decoder via JSON files (see the --enc-json-path option). This page allows you to nicely navigate into those values (fixed-point and/or floating-point data representations) and to visualize the convergence of the Turbo decoding process through the iterations (click here to download and play with a dumped file example and do not forget to unzip the file before to open it).

Select a JSON file:

Turbo code reader preview

Jump to a specific frame:

or press p for previous and n for next iteration.

Jump to a specific iteration:

Enable variable radius. Enable opacity. Enable big lines.


bit 0 bit 1 encoder decoder high likelihood low likelihood impossible

SISO in the Natural Domain

SISO in the Interleaved Domain