Parity Check Matrices of Low Density Parity Check Codes

This is a database of sparse graph codes. Properties recorded include the codes' parity check matrices, their rates and minimum distances, their empirical performance on the binary input Gaussian noise channel, and histograms of decoding times.

These Codes and Related Data are made freely available under the conditions that (1) when they are used, the authors of the codes and the data and this archive are acknowledged; (2) the authors of the codes and data are not liable for any inaccuracies in the materials presented here or any failure of the codes to work as hoped.