diff options
| author | Tom Rondeau <trondeau@vt.edu> | 2011-12-23 13:28:06 -0500 |
|---|---|---|
| committer | Tom Rondeau <trondeau@vt.edu> | 2011-12-23 13:28:06 -0500 |
| commit | 6a78e0a8ae6dc17a12ab5e397f1452a1a363e7d1 (patch) | |
| tree | 28e3d86e87a758c1024f30c67b1675a9300cc3cb /gr-digital/swig | |
| parent | c1c68974a6677f6dd81b1fb6e3c129e8d08c1fd0 (diff) | |
digital: added a class, digital_mpsk_snr_est_cc, that estimates the SNR of an M-ary PSK signal.
This block can calculate the SNR using 1 of 4 different methods specified in the block's constructor. They (tend to) trade off accuracy for computational performnace.
Diffstat (limited to 'gr-digital/swig')
| -rw-r--r-- | gr-digital/swig/CMakeLists.txt | 1 | ||||
| -rw-r--r-- | gr-digital/swig/digital_mpsk_snr_est_cc.i | 46 | ||||
| -rw-r--r-- | gr-digital/swig/digital_swig.i | 2 |
3 files changed, 49 insertions, 0 deletions
diff --git a/gr-digital/swig/CMakeLists.txt b/gr-digital/swig/CMakeLists.txt index dd60972869..136f9e43f0 100644 --- a/gr-digital/swig/CMakeLists.txt +++ b/gr-digital/swig/CMakeLists.txt @@ -59,6 +59,7 @@ install( digital_lms_dd_equalizer_cc.i digital_kurtotic_equalizer_cc.i digital_mpsk_receiver_cc.i + digital_mpsk_snr_est_cc.i digital_ofdm_cyclic_prefixer.i digital_ofdm_frame_acquisition.i digital_ofdm_frame_sink.i diff --git a/gr-digital/swig/digital_mpsk_snr_est_cc.i b/gr-digital/swig/digital_mpsk_snr_est_cc.i new file mode 100644 index 0000000000..cb61e94825 --- /dev/null +++ b/gr-digital/swig/digital_mpsk_snr_est_cc.i @@ -0,0 +1,46 @@ +/* -*- c++ -*- */ +/* + * Copyright 2011 Free Software Foundation, Inc. + * + * This file is part of GNU Radio + * + * GNU Radio is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 3, or (at your option) + * any later version. + * + * GNU Radio is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with GNU Radio; see the file COPYING. If not, write to + * the Free Software Foundation, Inc., 51 Franklin Street, + * Boston, MA 02110-1301, USA. + */ + +GR_SWIG_BLOCK_MAGIC(digital,mpsk_snr_est_cc); + +enum snr_est_type_t { + SNR_EST_SIMPLE = 0, // Simple estimator (>= 7 dB) + SNR_EST_SKEW, // Skewness-base est (>= 5 dB) + SNR_EST_M2M4, // 2nd & 4th moment est (>= 3 dB) + SNR_EST_SVN // SVN-based est (>= 0dB) +}; + +digital_mpsk_snr_est_cc_sptr +digital_make_mpsk_snr_est_cc(snr_est_type_t type, double alpha); + +class digital_mpsk_snr_est_cc : public gr_sync_block +{ +private: + void digital_mpsk_snr_est_cc(snr_est_type_t type, double alpha); + +public: + double snr(); + snr_est_type_t type() const; + double alpha() const; + void set_type(snr_est_type_t t); + void set_alpha(double alpha); +}; diff --git a/gr-digital/swig/digital_swig.i b/gr-digital/swig/digital_swig.i index 86b5cab13e..9182b2b097 100644 --- a/gr-digital/swig/digital_swig.i +++ b/gr-digital/swig/digital_swig.i @@ -41,6 +41,7 @@ #include "digital_kurtotic_equalizer_cc.h" #include "digital_lms_dd_equalizer_cc.h" #include "digital_mpsk_receiver_cc.h" +#include "digital_mpsk_snr_est_cc.h" #include "digital_ofdm_cyclic_prefixer.h" #include "digital_ofdm_frame_acquisition.h" #include "digital_ofdm_frame_sink.h" @@ -65,6 +66,7 @@ %include "digital_kurtotic_equalizer_cc.i" %include "digital_lms_dd_equalizer_cc.i" %include "digital_mpsk_receiver_cc.i" +%include "digital_mpsk_snr_est_cc.i" %include "digital_ofdm_cyclic_prefixer.i" %include "digital_ofdm_frame_acquisition.i" %include "digital_ofdm_frame_sink.i" |