Category: IP (Viterbi), DSP
Tools: Quartus® Prime
device:-


The BER estimator function can be used as an option in Viterbi IP, but it is functionally a function to estimate the BER of the transmission path (medium), and note that the BER improvement effect by Viterbi Encode/Decode is not included. is required.
Therefore, it should be noted that we do not get a fairly low BER as a result of viterbi encoding, and that changing parameters such as the number of softbits does not show any improvement effect according to the parameters.

The figure in the question refers to the following.

Viterbi Compiler User Guide (Japanese)
https://www.altera.co.jp/en_JP/pdfs/literature/ug/ug_viterbi-compiler_e.pdf
(Figure 3-17 Actual BER vs. signal-to-noise ratio at various rates)

Reference information
Viterbi IP Core User Guide
https://www.altera.com/en_US/pdfs/literature/ug/ug_viterbi-compiler.pdf