Construction of Girth-8 Type II QC-LPDC Codes

The program constructs girth-8 type II qc-ldpc codes given Base matrix, size of sub-matrix and row and columns weights. The base matrix, weights and size of sub-matrices are all variable. The program uses a search algorithm which might fail to find a code. The program could be run many times to find a code or simply increase the size of the code. The parity check matrix is stored in H.