Convolutional Codes

Data Structures
struct	_convolutional_code_
Defines
#define	IT_CONVOLUTIONAL_CODE(q)   IT_CAST(it_convolutional_code_t, q)
#define	it_convolutional_code_encode(it_this, b)   __it_convolutional_code_encode(IT_CONVOLUTIONAL_CODE(it_this), b)
#define	it_convolutional_code_encode_symbolic(it_this, b)   __it_convolutional_code_encode_symbolic(IT_CONVOLUTIONAL_CODE(it_this), b)
#define	it_cc_encode(cc, b)   it_convolutional_code_encode(cc, b)
#define	it_cc_encode_symbolic(cc, b)   it_convolutional_code_encode_symbolic(cc, b)
#define	it_cc_decode(cc, v)   it_convolutional_code_decode(cc, v)
#define	it_cc_next(cc, s, b)   it_convolutional_code_trellis_next(cc, s, b)
#define	it_cc_label(cc, s, b)   it_convolutional_code_trellis_label(cc, s, b)
Typedefs
typedef struct _convolutional_code_	it_convolutional_code_t
Functions
	it_instanciate (it_convolutional_code_t)
static it_convolutional_code_t *	it_convolutional_code_new (imat generators, int feedback)
static bvec	__it_convolutional_code_encode (it_convolutional_code_t *it_this, bvec b)
static ivec	__it_convolutional_code_encode_symbolic (it_convolutional_code_t *it_this, ivec b)
static int	it_convolutional_code_trellis_label (it_convolutional_code_t *cc, int state, int symbol)
static int	it_convolutional_code_trellis_next (it_convolutional_code_t *cc, int state, int symbol)
ivec	it_viterbi_decode_symbolic (it_convolutional_code_t *cc, mat metrics)
bvec	it_viterbi_decode (it_convolutional_code_t *cc, mat metrics)

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Detailed Description

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Define Documentation

#define it_cc_decode	(	cc,
		v		)	it_convolutional_code_decode(cc, v)

Definition at line 118 of file convcode.h.

#define it_cc_encode	(	cc,
		b		)	it_convolutional_code_encode(cc, b)

Definition at line 116 of file convcode.h.

Referenced by main().

#define it_cc_encode_symbolic	(	cc,
		b		)	it_convolutional_code_encode_symbolic(cc, b)

Definition at line 117 of file convcode.h.

Referenced by trellis_coded_quantizer_dequantize(), and trellis_coded_quantizer_quantize().

#define it_cc_label	(	cc,
		s,
		b		)	it_convolutional_code_trellis_label(cc, s, b)

Definition at line 120 of file convcode.h.

Referenced by convolutional_code_encode(), and convolutional_code_encode_symbolic().

#define it_cc_next	(	cc,
		s,
		b		)	it_convolutional_code_trellis_next(cc, s, b)

Definition at line 119 of file convcode.h.

Referenced by convolutional_code_encode(), and convolutional_code_encode_symbolic().

#define IT_CONVOLUTIONAL_CODE

(

q

)

IT_CAST(it_convolutional_code_t, q)

Definition at line 75 of file convcode.h.

Referenced by convolutional_code_destructor().

#define it_convolutional_code_encode	(	it_this,
		b		)	__it_convolutional_code_encode(IT_CONVOLUTIONAL_CODE(it_this), b)

Definition at line 88 of file convcode.h.

#define it_convolutional_code_encode_symbolic	(	it_this,
		b		)	__it_convolutional_code_encode_symbolic(IT_CONVOLUTIONAL_CODE(it_this), b)

Definition at line 94 of file convcode.h.

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Typedef Documentation

typedef struct _convolutional_code_ it_convolutional_code_t

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Function Documentation

static bvec __it_convolutional_code_encode	(	it_convolutional_code_t *	it_this,
		bvec	b
	)			[inline, static]

Definition at line 89 of file convcode.h.

References _convolutional_code_::encode.

static ivec __it_convolutional_code_encode_symbolic	(	it_convolutional_code_t *	it_this,
		ivec	b
	)			[inline, static]

Definition at line 96 of file convcode.h.

References _convolutional_code_::encode_symbolic.

static it_convolutional_code_t* it_convolutional_code_new	(	imat	generators,
		int	feedback
	)			[inline, static]

Definition at line 81 of file convcode.h.

References it_new_va, and it_va.

Referenced by main().

static int it_convolutional_code_trellis_label	(	it_convolutional_code_t *	cc,
		int	state,
		int	symbol
	)			[inline, static]

Definition at line 102 of file convcode.h.

References _convolutional_code_::output.

Referenced by it_convolutional_code_trellis_next().

static int it_convolutional_code_trellis_next	(	it_convolutional_code_t *	cc,
		int	state,
		int	symbol
	)			[inline, static]

Definition at line 108 of file convcode.h.

References _convolutional_code_::automaton, and it_convolutional_code_trellis_label().

it_instanciate

(

it_convolutional_code_t

)

Definition at line 64 of file convcode.c.

References convolutional_code_destructor(), convolutional_code_encode(), convolutional_code_encode_symbolic(), DUMM_NODE, encode_conv(), fls(), imat_clone(), imat_height(), imat_new(), imat_new_set(), imat_width(), it_construct, it_new_args_next, it_new_args_start, it_new_args_stop, it_overload, it_set_magic, mat_new_zeros(), NULL_INDEX, state, vec_new_set(), and vec_new_zeros().

bvec it_viterbi_decode	(	it_convolutional_code_t *	cc,
		mat	metrics
	)

Definition at line 297 of file convcode.c.

References bit, bvec_new(), it_viterbi_decode_symbolic(), ivec_delete(), _convolutional_code_::k, and mat_width().

Referenced by main().

ivec it_viterbi_decode_symbolic	(	it_convolutional_code_t *	cc,
		mat	metrics
	)

Definition at line 271 of file convcode.c.

References _convolutional_code_::automaton, _convolutional_code_::input, ivec_length(), _convolutional_code_::logalpha_0, _convolutional_code_::logbeta_end, logviterbi(), and _convolutional_code_::next_state_logpt.

Referenced by it_viterbi_decode(), and trellis_coded_quantizer_quantize().