check.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

/* CHECK.H - Interface to procedure for computing parity checks, etc. */

/* Copyright (c) 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 CHECK_H
#define CHECK_H

int check(mod2sparse *H, int *dblk, int *pchk);

double changed(double *, int *, int);

//double expected_parity_errors(mod2sparse *, double *);

//double loglikelihood(double *, char *, int);
//double expected_loglikelihood(double *, double *, int);

//double entropy(double *, int);

#endif