v27ter_rx.c File Reference

#include <stdlib.h>
#include <inttypes.h>
#include <string.h>
#include <stdio.h>
#include <tgmath.h>
#include <math.h>
#include "floating_fudge.h"
#include "spandsp/telephony.h"
#include "spandsp/logging.h"
#include "spandsp/complex.h"
#include "spandsp/vector_float.h"
#include "spandsp/complex_vector_float.h"
#include "spandsp/vector_int.h"
#include "spandsp/complex_vector_int.h"
#include "spandsp/async.h"
#include "spandsp/power_meter.h"
#include "spandsp/arctan2.h"
#include "spandsp/dds.h"
#include "spandsp/complex_filters.h"
#include "spandsp/v29rx.h"
#include "spandsp/v27ter_rx.h"
#include "spandsp/private/logging.h"
#include "spandsp/private/v27ter_rx.h"
#include "v27ter_rx_4800_floating_rrc.h"
#include "v27ter_rx_2400_floating_rrc.h"

Defines
#define	IAXMODEM_STUFF
#define	CARRIER_NOMINAL_FREQ   1800.0f
#define	BAUD_RATE_2400   1200
#define	BAUD_RATE_4800   1600
#define	EQUALIZER_DELTA   0.25f
#define	V27TER_TRAINING_SEG_3_LEN   50
#define	V27TER_TRAINING_SEG_5_LEN   1074
#define	V27TER_TRAINING_SEG_6_LEN   8
#define	V27TER_EQUALIZER_LEN   (V27TER_EQUALIZER_PRE_LEN + 1 + V27TER_EQUALIZER_POST_LEN)
Enumerations
enum	{   TRAINING_STAGE_NORMAL_OPERATION = 0, TRAINING_STAGE_SYMBOL_ACQUISITION, TRAINING_STAGE_LOG_PHASE, TRAINING_STAGE_WAIT_FOR_HOP,   TRAINING_STAGE_TRAIN_ON_ABAB, TRAINING_STAGE_TEST_ONES, TRAINING_STAGE_PARKED }
Functions
float	v27ter_rx_carrier_frequency (v27ter_rx_state_t *s)
float	v27ter_rx_symbol_timing_correction (v27ter_rx_state_t *s)
float	v27ter_rx_signal_power (v27ter_rx_state_t *s)
void	v27ter_rx_signal_cutoff (v27ter_rx_state_t *s, float cutoff)
int	v27ter_rx_equalizer_state (v27ter_rx_state_t *s, complexf_t **coeffs)
int	v27ter_rx (v27ter_rx_state_t *s, const int16_t amp[], int len)
int	v27ter_rx_fillin (v27ter_rx_state_t *s, int len)
void	v27ter_rx_set_put_bit (v27ter_rx_state_t *s, put_bit_func_t put_bit, void *user_data)
void	v27ter_rx_set_modem_status_handler (v27ter_rx_state_t *s, modem_tx_status_func_t handler, void *user_data)
logging_state_t *	v27ter_rx_get_logging_state (v27ter_rx_state_t *s)
int	v27ter_rx_restart (v27ter_rx_state_t *s, int bit_rate, int old_train)
v27ter_rx_state_t *	v27ter_rx_init (v27ter_rx_state_t *s, int bit_rate, put_bit_func_t put_bit, void *user_data)
int	v27ter_rx_release (v27ter_rx_state_t *s)
int	v27ter_rx_free (v27ter_rx_state_t *s)
void	v27ter_rx_set_qam_report_handler (v27ter_rx_state_t *s, qam_report_handler_t handler, void *user_data)

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Detailed Description

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Define Documentation

#define BAUD_RATE_2400   1200

The nominal baud or symbol rate in 2400bps mode

#define BAUD_RATE_4800   1600

The nominal baud or symbol rate in 4800bps mode

#define CARRIER_NOMINAL_FREQ   1800.0f

The nominal frequency of the carrier, in Hertz

#define EQUALIZER_DELTA   0.25f

The adaption rate coefficient for the equalizer

#define V27TER_EQUALIZER_LEN   (V27TER_EQUALIZER_PRE_LEN + 1 + V27TER_EQUALIZER_POST_LEN)

The length of the equalizer buffer

#define V27TER_TRAINING_SEG_3_LEN   50

The length of training segment 3, in symbols

#define V27TER_TRAINING_SEG_5_LEN   1074

The length of training segment 5, in symbols

#define V27TER_TRAINING_SEG_6_LEN   8

The length of training segment 6, in symbols