CCDM for Probabilistic Shaping in Python

The whole coding is based on the C++ implementation of CCDM mentioned in https://github.com/mihaivarsandan/Probabilistic_Constellation_Shaping.git

Code Structure

Usage

from probabilisticShaping import probabilisticShaping
M = 256
shaping_factor = 0.01
symbol_num = 10000
ps = probabilisticShaping(M, shaping_factor, symbol_num)
symbols = ps.genSymbols()

The constellation of symbols generated is enlarged to keep same power as uniform distribution qam.

Reference

[1]Edson Porto da Silva, Adolfo Fernandes Herbster. "OptiCommPy: Open-source Simulation of Fiber Optic Communications with Python", Journal of Open Source Software, 9(98), 6600, (2024) https://doi.org/10.21105/joss.06600
[2] https://github.com/mihaivarsandan/Probabilistic_Constellation_Shaping.git