gr_probe_mpsk_snr_c Class Reference
#include <gr_probe_mpsk_snr_c.h>
Inheritance diagram for gr_probe_mpsk_snr_c:
Public Member Functions | |
| ~gr_probe_mpsk_snr_c () | |
| int | work (int noutput_items, gr_vector_const_void_star &input_items, gr_vector_void_star &output_items) |
| just like gr_block::general_work, only this arranges to call consume_each for you | |
| double | signal_mean () const |
| double | noise_variance () const |
| double | snr () const |
| void | set_alpha (double alpha) |
Friends | |
| gr_probe_mpsk_snr_c_sptr | gr_make_probe_mpsk_snr_c (double alpha) |
Detailed Description
Compute the estimate SNR of an MPSK signal using the Squared Signal to Noise Variance (SNV) technique.
This technique assumes an AWGN channel.
- Parameters:
-
alpha Mean and variance smoothing filter constant
Compute the running average of the signal mean and noise variance. The estimated signal mean, noise variance, and SNR are available via accessors.
This SNR estimator is inaccurate below about 7dB SNR.
Constructor & Destructor Documentation
| gr_probe_mpsk_snr_c::~gr_probe_mpsk_snr_c | ( | ) |
Member Function Documentation
| double gr_probe_mpsk_snr_c::noise_variance | ( | ) | const [inline] |
| void gr_probe_mpsk_snr_c::set_alpha | ( | double | alpha | ) |
| double gr_probe_mpsk_snr_c::signal_mean | ( | ) | const [inline] |
| double gr_probe_mpsk_snr_c::snr | ( | ) | const |
| int gr_probe_mpsk_snr_c::work | ( | int | noutput_items, |
| gr_vector_const_void_star & | input_items, | ||
| gr_vector_void_star & | output_items | ||
| ) | [virtual] |
just like gr_block::general_work, only this arranges to call consume_each for you
The user must override work to define the signal processing code
Implements gr_sync_block.
Friends And Related Function Documentation
| gr_probe_mpsk_snr_c_sptr gr_make_probe_mpsk_snr_c | ( | double | alpha | ) | [friend] |
The documentation for this class was generated from the following file:
