GNU Radio 3.7.0 C++ API
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A rate 1/2, k=7 convolutional decoder for the CCSDS standard. More...
#include <decode_ccsds_27_fb.h>
Public Types | |
typedef boost::shared_ptr < decode_ccsds_27_fb > | sptr |
Static Public Member Functions | |
static sptr | make () |
Additional Inherited Members | |
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unsigned | decimation () const |
void | set_decimation (unsigned decimation) |
void | forecast (int noutput_items, gr_vector_int &ninput_items_required) |
Estimate input requirements given output request. More... | |
int | general_work (int noutput_items, gr_vector_int &ninput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items) |
compute output items from input items More... | |
int | fixed_rate_ninput_to_noutput (int ninput) |
Given ninput samples, return number of output samples that will be produced. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this. More... | |
int | fixed_rate_noutput_to_ninput (int noutput) |
Given noutput samples, return number of input samples required to produce noutput. N.B. this is only defined if fixed_rate returns true. Generally speaking, you don't need to override this. More... | |
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enum | vcolor { WHITE, GREY, BLACK } |
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sync_decimator (void) | |
sync_decimator (const std::string &name, gr::io_signature::sptr input_signature, gr::io_signature::sptr output_signature, unsigned decimation) | |
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std::vector< long > | d_max_output_buffer |
std::vector< long > | d_min_output_buffer |
gr::thread::mutex | d_setlock |
gr::logger_ptr | d_logger |
gr::logger_ptr | d_debug_logger |
A rate 1/2, k=7 convolutional decoder for the CCSDS standard.
This block performs soft-decision convolutional decoding using the Viterbi algorithm.
The input is a stream of (possibly noise corrupted) floating point values nominally spanning [-1.0, 1.0], representing the encoded channel symbols 0 (-1.0) and 1 (1.0), with erased symbols at 0.0.
The output is MSB first packed bytes of decoded values.
As a rate 1/2 code, there will be one output byte for every 16 input symbols.
This block is designed for continuous data streaming, not packetized data. The first 32 bits out will be zeroes, with the output delayed four bytes from the corresponding inputs.
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