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A New Formula for the Minimum Distance of an Expander Code
Sudipta Mallik · 2021-01-05 · via cs.IT updates on arXiv.org

An expander code is a binary linear code whose parity-check matrix is the bi-adjacency matrix of a bipartite expander graph. We provide a new formula for the minimum distance of such codes. We also provide a new proof of the result that $2(1-\varepsilon) γn$ is a lower bound of the minimum distance of the expander code given by a $(m,n,d,γ,1-\varepsilon)$ expander bipartite graph.

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