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On puncturing strategies for polar codes

Abstract : This paper introduces a class of specific puncturing patterns, called symmetric puncturing patterns, which can be characterized and generated from the rows of the generator matrix GN. They are first shown to be non-equivalent, then a low-complexity method to generate symmetric puncturing patterns is proposed, which performs a search tree algorithm with limited depth, over the rows of GN. Symmetric patterns are further optimized by density evolution, and shown to yield better performance than state-of-the-art rate compatible code constructions, relying on either puncturing or shortening techniques.
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Ludovic Chandesris, Valentin Savin, David Declercq. On puncturing strategies for polar codes. Communications Workshops (ICC Workshops), 2017 IEEE International Conference on, May 2017, Paris, France. pp.766 - 771, ⟨10.1109/ICCW.2017.7962751⟩. ⟨cea-01573439⟩

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