make-ldpc.h

用于LDPC编码译码的仿真实现。包括随机生成校验矩阵、由校验矩阵产生生成矩阵、编码、加随机噪声、译码等内容。原作者是老外

/* MAKE-LDPC.C - Make a Low Density Parity Check code's parity check matrix. */
//生成LDPC的校验矩阵
/* Copyright (c) 2000, 2001 by Radford M. Neal 
 *
 * Permission is granted for anyone to copy, use, or modify this program 
 * for purposes of research or education, provided this copyright notice 
 * is retained, and note is made of any changes that have been made. 
 *
 * This program is distributed without any warranty, express or implied.
 * As this program was written for research purposes only, it has not been
 * tested to the degree that would be advisable in any important application.
 * All use of this program is entirely at the user's own risk.
 */
#ifndef MAKE_LDPC_H
#define MAKE_LDPC_H

#include "mod2sparse.h"

int move_ps( int i, int j, int seed);
int eliminate(mod2entry *, int j, int seed);
void make_ldpc_l(char *pchk_file, double *lamita, int Dlmax,double *lao,int Drmax, int seed);
void make_ldpc_zhj1(char *pchk_file, int v,int num_sub_matrix);
void make_ldpc_KTS(char *pchk_file, int q,int num_sub_matrix);
void make_ldpc_B3G(char *pchk_file, double *lamita, int Dlmax,double *lao,int Drmax, int seed);
#endif