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How to upload own convolutional codes
You can upload your own convolutional code examples. Create a .txt file containing generator polynomials in octal notation. Polynomials need to be comma separated. An example is shown on the right.

After selecting your local .txt file, click update. A trellis based on your code example will be created and shown. You can download a file containing TikZ Code of the trellis diagram and change it to meet your requirements, if necessary.

Additionaly, you can upload a received sequence to be decoded. Your sequence should be in a separate file. Your received sequence should be also comma separated for each output bit and new lines should separate time steps. You can see an example sequence on the right. You can choose between hard decision and soft decision Viterbi algorithm to decode your sequence. The decoding process will be shown in an animated diagram and you can download the corresponding TikZ Code.