A Modification Method for Constructing Low-Density Parity-Check Codes for Burst Erasures

We study a modification method for constructing lowdensity parity-check (LDPC) codes for solid burst erasures. Our proposed modification method is based on a column permutation technique for a parity-check matrix of the original LDPC codes. It can change the burst erasure correction capabilities without degradation in the performance over random erasure channels. We show by simulation results that the performance of codes permuted by our method are better than that of the original codes, especially with two or more solid burst erasures. key words: low-density parity-check (LDPC) code, burst erasure, sumproduct decoding, stopping set