cldpc Class Reference

#include <gnuradio/fec/cldpc.h>

Public Member Functions
	cldpc ()
	Default constructor. More...
	cldpc (const GF2Mat X)
	Constructs the LDPC class from given GF2mat X. More...
	cldpc (const alist _list)
	Constructs the class from the given alist _list. More...
void	print_permute ()
	Prints the variable permute. More...
std::vector< char >	encode (std::vector< char > dataword)
	Encode the given vector dataword. More...
int	dimension ()
	Returns the dimension of the code. More...
GF2Mat	get_H ()
	Returns the parity check matrix H. More...
GF2Mat	get_G ()
	Returns the matrix G used in encoding. More...
int	get_M ()
	Returns the variable M. More...
int	get_N ()
	Returns the variable N. More...
std::vector< char >	syndrome (const std::vector< char > in)
	Returns the syndrome for a given vector "in". More...
bool	is_codeword (const std::vector< char > in)
	Returns true if "in" is a codeword, else false. More...
void	set_alist (const alist _list)
	Set the variable _list. More...
std::vector< char >	get_systematic_bits (std::vector< char > in)
	Obtain systematic bits from "in". More...

Constructor & Destructor Documentation

cldpc::cldpc ( )

inline

Default constructor.

cldpc::cldpc

(

const GF2Mat

X

)

Constructs the LDPC class from given GF2mat X.

cldpc::cldpc

(

const alist

_list

)

Constructs the class from the given alist _list.

Member Function Documentation

int cldpc::dimension

(

)

Returns the dimension of the code.

std::vector<char> cldpc::encode

(

std::vector< char >

dataword

)

Encode the given vector dataword.

dataword is of length K where K is the dimension of the code. The function returns a vector of length N where N is the block-length of the code.

For encoding a G matrix in the form [I P] is obtained from the parity matrix H, by (a) Column permutations, (b) Row additions and (c) Row permutations. Details of encoding is given in section A.1 of the reference given below.

• "Modern Coding Theory", T Richardson and R Urbanke.

GF2Mat cldpc::get_G

(

)

Returns the matrix G used in encoding.

GF2Mat cldpc::get_H

(

)

Returns the parity check matrix H.

int cldpc::get_M

(

)

Returns the variable M.

int cldpc::get_N

(

)

Returns the variable N.

std::vector<char> cldpc::get_systematic_bits

(

std::vector< char >

in

)

Obtain systematic bits from "in".

bool cldpc::is_codeword

(

const std::vector< char >

in

)

Returns true if "in" is a codeword, else false.

void cldpc::print_permute

(

)

Prints the variable permute.

void cldpc::set_alist

(

const alist

_list

)

Set the variable _list.

std::vector<char> cldpc::syndrome

(

const std::vector< char >

in

)

Returns the syndrome for a given vector "in".

---

The documentation for this class was generated from the following file:

• cldpc.h