gr::dvbs2rx::reed_muller Class Reference

Interleaved (64, 7, 32) Reed-Muller encoder/decoder. More...

#include <reed_muller.h>

Public Member Functions
	reed_muller (euclidean_map_func_ptr p_custom_map=nullptr)
	Construct the Reed-Muller encoder/decoder. More...
	reed_muller (std::vector< uint8_t > &&enabled_codewords, euclidean_map_func_ptr p_custom_map=nullptr)
	Construct the Reed-Muller encoder/decoder for a codeword subset. More...
uint64_t	encode (uint8_t in_dataword)
	Encode a given dataword (PLSC) into the corresponding codeword. More...
uint8_t	decode (uint64_t hard_dec)
	Decode a binary hard decision into the corresponding dataword. More...
uint8_t	decode (const float *soft_dec)
	Decode a real soft decision vector into the corresponding dataword. More...

Static Public Member Functions
static void	default_euclidean_map (float *dptr, uint64_t codeword)
	Map codeword to a real vector using 2-PAM. More...

Public Attributes
euclidean_map_func_ptr	euclidean_map

Detailed Description

Interleaved (64, 7, 32) Reed-Muller encoder/decoder.

This class implements DVB-S2's Reed-Muller (RM) code used by the physical layer signaling (PLS) encoding.

Constructor & Destructor Documentation

reed_muller() [1/2]

gr::dvbs2rx::reed_muller::reed_muller ( euclidean_map_func_ptr  p_custom_map = nullptr )

explicit

Construct the Reed-Muller encoder/decoder.

Parameters

p_custom_map

Pointer to a custom mapping function used to map the binary the codewords into real-valued Euclidean-space images. If not defined, method "default_euclidean_map" is used.

reed_muller() [2/2]

gr::dvbs2rx::reed_muller::reed_muller ( std::vector< uint8_t > &&  enabled_codewords, euclidean_map_func_ptr  p_custom_map = nullptr  )

explicit

Construct the Reed-Muller encoder/decoder for a codeword subset.

Parameters

enabled_codewords	Temporary vector with the indexes within [0, 128) corresponding to subset of codewords that may appear (according to a priori knowledge) on the incoming signal.
p_custom_map	Pointer to a custom mapping function used to map the binary the codewords into real-valued Euclidean-space images. If not defined, method "default_euclidean_map" is used.

Member Function Documentation

decode() [1/2]

uint8_t gr::dvbs2rx::reed_muller::decode

(

const float *

soft_dec

)

Decode a real soft decision vector into the corresponding dataword.

Parameters

soft_dec

Received 64-element soft decision real vector to be decoded.

Returns

Decoded 7-bit dataword.

decode() [2/2]

uint8_t gr::dvbs2rx::reed_muller::decode

(

uint64_t

hard_dec

)

Decode a binary hard decision into the corresponding dataword.

Parameters

hard_dec

Received 64-bit hard decision to be decoded.

Returns

Decoded 7-bit dataword.

default_euclidean_map()

static void gr::dvbs2rx::reed_muller::default_euclidean_map ( float *  dptr, uint64_t  codeword  )

static

Map codeword to a real vector using 2-PAM.

Parameters

dptr	Destination pointer for the 64 real 2-PAM mapped symbols.
codeword	64-bit (64, 7, 32) Reed-Muller codeword to be mapped.

Note

This is the default Euclidean-space mapping if another custom mapping is not provided through the constructor.

encode()

uint64_t gr::dvbs2rx::reed_muller::encode

(

uint8_t

in_dataword

)

Encode a given dataword (PLSC) into the corresponding codeword.

Parameters

in_dataword

7-bit PLSC dataword.

Returns

64-bit interleaved (64, 7, 32) RM codeword.

Member Data Documentation

euclidean_map

euclidean_map_func_ptr gr::dvbs2rx::reed_muller::euclidean_map

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

• reed_muller.h