Moderate Density Parity-Check Codes from Projective Bundles [article]

Jessica Bariffi, Sam Mattheus, Alessandro Neri, Joachim Rosenthal
2021 arXiv   pre-print
A new construction for moderate density parity-check (MDPC) codes using finite geometry is proposed. We design a parity-check matrix for this family of binary codes as the concatenation of two matrices: the incidence matrix between points and lines of the Desarguesian projective plane and the incidence matrix between points and ovals of a projective bundle. A projective bundle is a special collection of ovals which pairwise meet in a unique point. We determine minimum distance and dimension of
more » ... hese codes, showing that they have a natural quasi-cyclic structure. In addition, we analyze the error-correction performance within one round of a modification of Gallager's bit-flipping decoding algorithm. In this setting, our codes have the best possible error-correction performance for this range of parameters.
arXiv:2103.09722v1 fatcat:tsvuul4l3zedfggz5klvs6pj2m