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Create a Custom Channel

The simulator is designed for black-box use, but it is possible to implement your own channel.

If you want to create your own decoder without dealing with the complex, factory-heavy binary, example CVQKD chains are provided in src/examples/.

Understanding the Examples

The example files illustrate how AFF3CT tasks are connected depending on the channel, simulation mode, and coding scheme. Their filenames follow this convention:

<channel>_<coding scheme>[_pip|_seq]
  • The channel name comes first, then the coding scheme type.
  • The suffix _pip indicates a pipeline, and _seq indicates a sequence.

Info

When a coding scheme is described in the filename as syndrome concatenation WITHOUT coset, it uses the original AFF3CT decoder. Such an example is provided for educational purposes only as their \(\beta\)/FER performance will be lower than with the modified decoder.

Creating a Custom File

Once you have created your own .cpp file (or adapted an example) in src/, register it in CMakeLists.txt:

1. Add the executable:

add_executable(new_cpp_file_binary_name
    $<TARGET_OBJECTS:CVQKD-obj>
    ${CMAKE_CURRENT_SOURCE_DIR}/src/new_cpp_file.cpp
)

2. Add it to the target list:

set(ALL_TARGETS
    new_cpp_file_binary_name

    create_bsparse_from_cil
    HDirac
)