학술논문

Hermitian-Lifted Codes
Document Type
Working Paper
Source
Designs, Codes and Cryptography, 89 (2021), no. 3, 497-515
Subject
Computer Science - Information Theory
94B05, 11T71, 94B27
Language
Abstract
In this paper, we construct codes for local recovery of erasures with high availability and constant-bounded rate from the Hermitian curve. These new codes, called Hermitian-lifted codes, are evaluation codes with evaluation set being the set of $\mathbb{F}_{q^2}$-rational points on the affine curve. The novelty is in terms of the functions to be evaluated; they are a special set of monomials which restrict to low degree polynomials on lines intersected with the Hermitian curve. As a result, the positions corresponding to points on any line through a given point act as a recovery set for the position corresponding to that point.