v17_rx_state_t Struct Reference

#include <v17rx.h>

List of all members.

Public Attributes

int bit_rate
 The bit rate of the modem. Valid values are 7200 9600, 12000 and 14400.
put_bit_func_t put_bit
 The callback function used to put each bit received.
void * user_data
 A user specified opaque pointer passed to the put_but routine.
qam_report_handler_t * qam_report
 A callback function which may be enabled to report every symbol's constellation position.
void * qam_user_data
 A user specified opaque pointer passed to the qam_report callback routine.
float rrc_filter [2 *V17_RX_FILTER_STEPS]
 The route raised cosine (RRC) pulse shaping filter buffer.
int rrc_filter_step
 Current offset into the RRC pulse shaping filter buffer.
int diff
 The state of the differential decoder.
unsigned int scramble_reg
 The register for the data scrambler.
int short_train
 TRUE if the short training sequence is to be used.
int training_stage
 The section of the training data we are currently in.
int training_count
float training_error
int16_t last_sample
 The value of the last signal sample, using the a simple HPF for signal power estimation.
int signal_present
 >0 if a signal above the minimum is present. It may or may not be a V.17 signal.
uint32_t carrier_phase
 The current phase of the carrier (i.e. the DDS parameter).
int32_t carrier_phase_rate
 The update rate for the phase of the carrier (i.e. the DDS increment).
int32_t carrier_phase_rate_save
 The carrier update rate saved for reuse when using short training.
float carrier_track_p
float carrier_track_i
power_meter_t power
 The received signal power monitor.
int32_t carrier_on_power
int32_t carrier_off_power
float agc_scaling
float agc_scaling_save
float eq_delta
complexf_t eq_coeff [V17_EQUALIZER_PRE_LEN+1+V17_EQUALIZER_POST_LEN]
 The adaptive equalizer coefficients.
complexf_t eq_coeff_save [V17_EQUALIZER_PRE_LEN+1+V17_EQUALIZER_POST_LEN]
complexf_t eq_buf [V17_EQUALIZER_MASK+1]
int eq_step
 Current offset into equalizer buffer.
int eq_put_step
int baud_half
 The current half of the baud.
float symbol_sync_low [2]
 Band edge symbol sync. filter state.
float symbol_sync_high [2]
float symbol_sync_dc_filter [2]
float baud_phase
int total_baud_timing_correction
 The total symbol timing correction since the carrier came up. This is only for performance analysis purposes.
int32_t start_angles [2]
 Starting phase angles for the coarse carrier aquisition step.
int32_t angles [16]
 History list of phase angles for the coarse carrier aquisition step.
const complexf_tconstellation
 A pointer to the current constellation.
int space_map
 A pointer to the current space map. There is a space map for each trellis state.
int bits_per_symbol
 The number of bits in each symbol at the current bit rate.
int trellis_ptr
 Current pointer to the trellis buffers.
int full_path_to_past_state_locations [V17_TRELLIS_STORAGE_DEPTH][8]
 The trellis.
int past_state_locations [V17_TRELLIS_STORAGE_DEPTH][8]
 The trellis.
float distances [8]
 Euclidean distances (actually the sqaures of the distances) from the last states of the trellis.
logging_state_t logging
 Error and flow logging control.


Detailed Description

V.17 modem receive side descriptor. This defines the working state for a single instance of a V.17 modem receiver.


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