drowe67 [Tue, 30 May 2017 01:57:35 +0000 (01:57 +0000)]
working on 16kHz support, number of samples/frame now a run time varialble, c2sim and c2enc/dec 1300 output bit exact
git-svn-id: https://svn.code.sf.net/p/freetel/code@3146
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hobbes1069 [Tue, 30 May 2017 00:14:08 +0000 (00:14 +0000)]
Tag release FreeDV 1.2.1.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3145
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hobbes1069 [Tue, 30 May 2017 00:12:35 +0000 (00:12 +0000)]
Merge win32 log fix into 1.2 branch.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3144
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drowe67 [Sat, 27 May 2017 21:54:31 +0000 (21:54 +0000)]
SNR estimation for EME
git-svn-id: https://svn.code.sf.net/p/freetel/code@3143
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drowe67 [Thu, 25 May 2017 02:31:55 +0000 (02:31 +0000)]
making a start on HF noise cancellation problems
git-svn-id: https://svn.code.sf.net/p/freetel/code@3142
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drowe67 [Thu, 18 May 2017 10:43:09 +0000 (10:43 +0000)]
few tweaks to only log errors when valid signal
git-svn-id: https://svn.code.sf.net/p/freetel/code@3141
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drowe67 [Thu, 18 May 2017 00:36:05 +0000 (00:36 +0000)]
thicker lines on plots
git-svn-id: https://svn.code.sf.net/p/freetel/code@3140
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drowe67 [Thu, 18 May 2017 00:35:23 +0000 (00:35 +0000)]
ssb filtering feature and bcleaned up rx logs
git-svn-id: https://svn.code.sf.net/p/freetel/code@3139
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drowe67 [Tue, 16 May 2017 20:37:37 +0000 (20:37 +0000)]
selects Nc based on code rate to maintain 700 bit/s payload data rate
git-svn-id: https://svn.code.sf.net/p/freetel/code@3138
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drowe67 [Tue, 16 May 2017 03:03:30 +0000 (03:03 +0000)]
added analog signal simulation and interleaving of (224,112) code, and a basic sync system for rx
git-svn-id: https://svn.code.sf.net/p/freetel/code@3137
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drowe67 [Tue, 16 May 2017 03:02:29 +0000 (03:02 +0000)]
added error pattern and analog simulation
git-svn-id: https://svn.code.sf.net/p/freetel/code@3136
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drowe67 [Tue, 16 May 2017 03:00:41 +0000 (03:00 +0000)]
added rate 0.8 wenet ldpc code for comparison
git-svn-id: https://svn.code.sf.net/p/freetel/code@3135
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drowe67 [Sat, 13 May 2017 21:59:39 +0000 (21:59 +0000)]
one frame ldpc enc/dec working for ofdm_rx/ofdm_tx
git-svn-id: https://svn.code.sf.net/p/freetel/code@3134
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drowe67 [Sat, 13 May 2017 09:06:54 +0000 (09:06 +0000)]
added various new plots for characterising system, added diversity for comparison, normalised HF power, slower freq tracking to improve perf
git-svn-id: https://svn.code.sf.net/p/freetel/code@3133
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drowe67 [Fri, 12 May 2017 02:33:04 +0000 (02:33 +0000)]
adding multiple LDPC frame interleaving, reorganised plots
git-svn-id: https://svn.code.sf.net/p/freetel/code@3132
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drowe67 [Thu, 11 May 2017 21:55:27 +0000 (21:55 +0000)]
script to separate all.wav into separate wave files for listening tests
git-svn-id: https://svn.code.sf.net/p/freetel/code@3131
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drowe67 [Wed, 10 May 2017 05:47:49 +0000 (05:47 +0000)]
interleaver working better, at least for ldpc_short, getting PER<0.1 at 6dB for 576*4 codewords on ldpc_qpsk and for 32 fr interleaver on ldpc_short
git-svn-id: https://svn.code.sf.net/p/freetel/code@3130
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drowe67 [Tue, 9 May 2017 20:53:07 +0000 (20:53 +0000)]
brought ldpcut back to a simplified demo for blog post
git-svn-id: https://svn.code.sf.net/p/freetel/code@3129
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drowe67 [Sun, 7 May 2017 20:48:16 +0000 (20:48 +0000)]
added a few notes and tested
git-svn-id: https://svn.code.sf.net/p/freetel/code@3128
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drowe67 [Sun, 7 May 2017 20:29:30 +0000 (20:29 +0000)]
added better HF model which reconciled (poor) perf with ldpcut
git-svn-id: https://svn.code.sf.net/p/freetel/code@3127
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drowe67 [Sun, 7 May 2017 20:26:18 +0000 (20:26 +0000)]
added ldpc code
git-svn-id: https://svn.code.sf.net/p/freetel/code@3126
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drowe67 [Sun, 7 May 2017 20:23:40 +0000 (20:23 +0000)]
modified to test Bill's short LDPC codes
git-svn-id: https://svn.code.sf.net/p/freetel/code@3125
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drowe67 [Sun, 7 May 2017 00:42:03 +0000 (00:42 +0000)]
diabled writing log file on Win32
git-svn-id: https://svn.code.sf.net/p/freetel/code@3124
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drowe67 [Fri, 5 May 2017 03:27:32 +0000 (03:27 +0000)]
added fading channel model, results check out ok
git-svn-id: https://svn.code.sf.net/p/freetel/code@3123
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drowe67 [Thu, 4 May 2017 05:36:43 +0000 (05:36 +0000)]
first pass at LDPC integration. Good results for AWGN channel, but HF fading not working properly
git-svn-id: https://svn.code.sf.net/p/freetel/code@3122
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drowe67 [Thu, 4 May 2017 05:35:38 +0000 (05:35 +0000)]
changed amplitde scaling to prevent clipping with noise
git-svn-id: https://svn.code.sf.net/p/freetel/code@3121
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drowe67 [Wed, 3 May 2017 19:46:05 +0000 (19:46 +0000)]
URL change, thanks Steve
git-svn-id: https://svn.code.sf.net/p/freetel/code@3120
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drowe67 [Wed, 3 May 2017 03:55:16 +0000 (03:55 +0000)]
aquisition working with freq offsets up to +/-20Hz. A bit slow, but gd enough for initial OTA tests. Will speed up later.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3119
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drowe67 [Wed, 3 May 2017 00:40:36 +0000 (00:40 +0000)]
added AWGN and HF channel simulation, usual confusion with real signals, SNR est and meas. How rx is syncing up OK
git-svn-id: https://svn.code.sf.net/p/freetel/code@3118
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drowe67 [Tue, 2 May 2017 05:40:32 +0000 (05:40 +0000)]
first pass coarse timing/frame sync working on ofdm_rx
git-svn-id: https://svn.code.sf.net/p/freetel/code@3117
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drowe67 [Mon, 1 May 2017 02:32:21 +0000 (02:32 +0000)]
brought aquisition UT back to life, falls over when abs(freq offset) >= 25Hz, which is about half symbol rate. Coincidence?
git-svn-id: https://svn.code.sf.net/p/freetel/code@3116
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drowe67 [Mon, 1 May 2017 01:55:56 +0000 (01:55 +0000)]
ofdm_tx and ofdm_rx working with no noise
git-svn-id: https://svn.code.sf.net/p/freetel/code@3115
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drowe67 [Sun, 30 Apr 2017 21:09:41 +0000 (21:09 +0000)]
error that was casuing sm1000 to crash - need one extra storage for phase H[]
git-svn-id: https://svn.code.sf.net/p/freetel/code@3114
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drowe67 [Sat, 29 Apr 2017 23:56:05 +0000 (23:56 +0000)]
first pass at file based tx
git-svn-id: https://svn.code.sf.net/p/freetel/code@3113
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drowe67 [Sat, 29 Apr 2017 23:55:31 +0000 (23:55 +0000)]
first pass at file based rx
git-svn-id: https://svn.code.sf.net/p/freetel/code@3112
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drowe67 [Sat, 29 Apr 2017 22:40:11 +0000 (22:40 +0000)]
split rate fs ofdm simulation into multiple files
git-svn-id: https://svn.code.sf.net/p/freetel/code@3111
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drowe67 [Sat, 29 Apr 2017 21:53:20 +0000 (21:53 +0000)]
linker mods to reduce file of sm1000 binary - thanks Steve
git-svn-id: https://svn.code.sf.net/p/freetel/code@3110
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drowe67 [Sat, 29 Apr 2017 00:06:41 +0000 (00:06 +0000)]
moved buffer shift inside ofdm_demod, default init of run time states
git-svn-id: https://svn.code.sf.net/p/freetel/code@3109
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drowe67 [Fri, 28 Apr 2017 01:02:38 +0000 (01:02 +0000)]
code for handling sample slips, tested with +/-500ppm clock offsets
git-svn-id: https://svn.code.sf.net/p/freetel/code@3108
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drowe67 [Thu, 27 Apr 2017 06:49:28 +0000 (06:49 +0000)]
cleaned up loop indexes
git-svn-id: https://svn.code.sf.net/p/freetel/code@3107
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drowe67 [Thu, 27 Apr 2017 06:48:14 +0000 (06:48 +0000)]
cleaned up loop indexes
git-svn-id: https://svn.code.sf.net/p/freetel/code@3106
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drowe67 [Thu, 27 Apr 2017 05:58:04 +0000 (05:58 +0000)]
moved demodulation to phase correction loop
git-svn-id: https://svn.code.sf.net/p/freetel/code@3105
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drowe67 [Thu, 27 Apr 2017 00:36:50 +0000 (00:36 +0000)]
cleaned up, next step put demod in function
git-svn-id: https://svn.code.sf.net/p/freetel/code@3104
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drowe67 [Wed, 26 Apr 2017 22:14:12 +0000 (22:14 +0000)]
fine timing and fine freq working on fixed buf
git-svn-id: https://svn.code.sf.net/p/freetel/code@3103
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drowe67 [Wed, 26 Apr 2017 09:03:34 +0000 (09:03 +0000)]
refactoring rx side - rx sym not working on fixed buf,HF results looking gd
git-svn-id: https://svn.code.sf.net/p/freetel/code@3102
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drowe67 [Sun, 23 Apr 2017 08:04:48 +0000 (08:04 +0000)]
starting to refactor rate Fs ofdm simulation, and changed name of rate fs and rate rs
git-svn-id: https://svn.code.sf.net/p/freetel/code@3101
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drowe67 [Thu, 20 Apr 2017 03:19:40 +0000 (03:19 +0000)]
fine timing getting gd results (almost no IL) with no sample clock errors, and acceptable results at +/-500 and +/-1000ppm
git-svn-id: https://svn.code.sf.net/p/freetel/code@3100
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drowe67 [Wed, 19 Apr 2017 21:27:03 +0000 (21:27 +0000)]
fine timing doing some sensible things, tracking timing as multipath changes, however BER still a little worse than fixed fine timing
git-svn-id: https://svn.code.sf.net/p/freetel/code@3099
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drowe67 [Wed, 19 Apr 2017 03:58:31 +0000 (03:58 +0000)]
progressing fine timing algorithm, added test based on small deviations from current timing est
git-svn-id: https://svn.code.sf.net/p/freetel/code@3098
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drowe67 [Sat, 15 Apr 2017 22:04:22 +0000 (22:04 +0000)]
timing and freq aquisition test
git-svn-id: https://svn.code.sf.net/p/freetel/code@3097
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drowe67 [Tue, 11 Apr 2017 00:32:09 +0000 (00:32 +0000)]
drawing curves
git-svn-id: https://svn.code.sf.net/p/freetel/code@3096
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drowe67 [Mon, 10 Apr 2017 22:51:01 +0000 (22:51 +0000)]
converted to QPSK
git-svn-id: https://svn.code.sf.net/p/freetel/code@3095
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drowe67 [Mon, 10 Apr 2017 21:40:32 +0000 (21:40 +0000)]
added BIll's ml_pd and comparedwith some curves
git-svn-id: https://svn.code.sf.net/p/freetel/code@3094
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drowe67 [Fri, 7 Apr 2017 04:47:30 +0000 (04:47 +0000)]
progressing rate Fs bpsk ofdm simulation
git-svn-id: https://svn.code.sf.net/p/freetel/code@3093
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hobbes1069 [Tue, 4 Apr 2017 20:42:22 +0000 (20:42 +0000)]
update pkgconfig template for codec2.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3092
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drowe67 [Tue, 4 Apr 2017 19:42:00 +0000 (19:42 +0000)]
edited to support new cohpsk_mod API
git-svn-id: https://svn.code.sf.net/p/freetel/code@3091
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hobbes1069 [Tue, 4 Apr 2017 13:37:52 +0000 (13:37 +0000)]
Disable building GUI tools for wxWidgets since we don't need them.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3090
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drowe67 [Tue, 4 Apr 2017 08:48:33 +0000 (08:48 +0000)]
generates figures of various options
git-svn-id: https://svn.code.sf.net/p/freetel/code@3089
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drowe67 [Tue, 4 Apr 2017 02:36:40 +0000 (02:36 +0000)]
refactored to gives constant run time for different pilot insertion rates
git-svn-id: https://svn.code.sf.net/p/freetel/code@3088
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drowe67 [Tue, 4 Apr 2017 01:19:25 +0000 (01:19 +0000)]
added modn stripping refinemeant and wider time window options
git-svn-id: https://svn.code.sf.net/p/freetel/code@3087
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drowe67 [Thu, 30 Mar 2017 20:09:46 +0000 (20:09 +0000)]
if-deffed out code not rqd for stm32 build
git-svn-id: https://svn.code.sf.net/p/freetel/code@3086
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drowe67 [Thu, 30 Mar 2017 04:40:35 +0000 (04:40 +0000)]
reasonable results with HF channel model, about 1dB IL on HF at 6dB Eb/No. Next step try interpolating or pilots from > 2 frames
git-svn-id: https://svn.code.sf.net/p/freetel/code@3085
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drowe67 [Wed, 29 Mar 2017 21:19:54 +0000 (21:19 +0000)]
first pass at pilot based phase estimation averaged over three carriers
git-svn-id: https://svn.code.sf.net/p/freetel/code@3084
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drowe67 [Fri, 24 Mar 2017 03:05:29 +0000 (03:05 +0000)]
can now simulate avergaing three carriers, about to speed up for longer tests
git-svn-id: https://svn.code.sf.net/p/freetel/code@3083
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drowe67 [Thu, 23 Mar 2017 23:25:33 +0000 (23:25 +0000)]
baseline rate Rs BPSK AWGN simulation, about to add HF
git-svn-id: https://svn.code.sf.net/p/freetel/code@3082
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drowe67 [Thu, 23 Mar 2017 06:47:58 +0000 (06:47 +0000)]
working on handling phase est ambiguity neat +/- pi/2
git-svn-id: https://svn.code.sf.net/p/freetel/code@3081
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drowe67 [Tue, 21 Mar 2017 23:45:28 +0000 (23:45 +0000)]
added worksheet for new BPSK waveform, nice results on paper
git-svn-id: https://svn.code.sf.net/p/freetel/code@3080
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drowe67 [Tue, 21 Mar 2017 23:43:05 +0000 (23:43 +0000)]
building up simulation to inlude phase and frequency offsets
git-svn-id: https://svn.code.sf.net/p/freetel/code@3079
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drowe67 [Tue, 21 Mar 2017 09:59:18 +0000 (09:59 +0000)]
bpsk simulation with ML dbpsk and mod stripping phase est
git-svn-id: https://svn.code.sf.net/p/freetel/code@3078
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drowe67 [Mon, 20 Mar 2017 19:30:13 +0000 (19:30 +0000)]
updated command line examples
git-svn-id: https://svn.code.sf.net/p/freetel/code@3077
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drowe67 [Sun, 19 Mar 2017 23:24:16 +0000 (23:24 +0000)]
better support for multiple LDPC codes
git-svn-id: https://svn.code.sf.net/p/freetel/code@3076
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drowe67 [Sun, 19 Mar 2017 23:23:30 +0000 (23:23 +0000)]
soft dec output, ready for LDPC dec
git-svn-id: https://svn.code.sf.net/p/freetel/code@3075
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hobbes1069 [Sun, 19 Mar 2017 21:44:50 +0000 (21:44 +0000)]
Clean up how SVN revision works.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3074
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hobbes1069 [Sun, 19 Mar 2017 21:28:58 +0000 (21:28 +0000)]
README cleanup, still needs some work.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3073
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drowe67 [Sun, 19 Mar 2017 09:45:36 +0000 (09:45 +0000)]
ldpc_dec modified to read in half frames and perform FEC frame sync, cohpsk and unit tests modified to work with non-diversity, next step verify cohpsk with AWGN and test on cmd line with LDPC decoder
git-svn-id: https://svn.code.sf.net/p/freetel/code@3072
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drowe67 [Sun, 19 Mar 2017 00:06:09 +0000 (00:06 +0000)]
112 LDPC code support in LDPC unit tests
git-svn-id: https://svn.code.sf.net/p/freetel/code@3071
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drowe67 [Sat, 18 Mar 2017 21:21:11 +0000 (21:21 +0000)]
traps wrong CML path
git-svn-id: https://svn.code.sf.net/p/freetel/code@3070
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drowe67 [Sat, 18 Mar 2017 06:30:11 +0000 (06:30 +0000)]
typo in header
git-svn-id: https://svn.code.sf.net/p/freetel/code@3069
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drowe67 [Sat, 18 Mar 2017 06:11:45 +0000 (06:11 +0000)]
break LDPC code->headerfile func out of ldpc_fsk_lib.m
git-svn-id: https://svn.code.sf.net/p/freetel/code@3068
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drowe67 [Sat, 18 Mar 2017 02:20:44 +0000 (02:20 +0000)]
better plot output, but not satisfied by fuzzy ouput of eps->png conversion
git-svn-id: https://svn.code.sf.net/p/freetel/code@3067
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drowe67 [Thu, 16 Mar 2017 07:23:18 +0000 (07:23 +0000)]
added hf/multipath model, and diversity results
git-svn-id: https://svn.code.sf.net/p/freetel/code@3066
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drowe67 [Thu, 16 Mar 2017 05:16:04 +0000 (05:16 +0000)]
modified plots for blog post
git-svn-id: https://svn.code.sf.net/p/freetel/code@3065
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drowe67 [Thu, 16 Mar 2017 02:57:19 +0000 (02:57 +0000)]
first pass a AWGN perf curves for Bill's short codes
git-svn-id: https://svn.code.sf.net/p/freetel/code@3064
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drowe67 [Thu, 16 Mar 2017 00:49:40 +0000 (00:49 +0000)]
fix some warnings, remove unused ancient unittests
git-svn-id: https://svn.code.sf.net/p/freetel/code@3063
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drowe67 [Thu, 16 Mar 2017 00:49:14 +0000 (00:49 +0000)]
fix some warnings
git-svn-id: https://svn.code.sf.net/p/freetel/code@3062
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drowe67 [Thu, 16 Mar 2017 00:22:49 +0000 (00:22 +0000)]
removed some unused old codebook files
git-svn-id: https://svn.code.sf.net/p/freetel/code@3061
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drowe67 [Wed, 15 Mar 2017 10:43:41 +0000 (10:43 +0000)]
short LPDC codes
git-svn-id: https://svn.code.sf.net/p/freetel/code@3060
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drowe67 [Wed, 15 Mar 2017 05:22:52 +0000 (05:22 +0000)]
simulation to plot error curves for BIll VK5DSP's short LDPC codes
git-svn-id: https://svn.code.sf.net/p/freetel/code@3059
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hobbes1069 [Mon, 13 Mar 2017 17:50:30 +0000 (17:50 +0000)]
Add libsamplerate as a cmake dependency for codec2.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3058
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hobbes1069 [Tue, 7 Mar 2017 22:25:39 +0000 (22:25 +0000)]
Updates to support OSX.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3057
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drowe67 [Sun, 5 Mar 2017 09:14:14 +0000 (09:14 +0000)]
first pass at option to introduce interfering carrier
git-svn-id: https://svn.code.sf.net/p/freetel/code@3056
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drowe67 [Thu, 2 Mar 2017 04:31:39 +0000 (04:31 +0000)]
re-enabled unittest building in Cmake & fixed C99 build issue
git-svn-id: https://svn.code.sf.net/p/freetel/code@3055
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drowe67 [Sat, 25 Feb 2017 08:35:58 +0000 (08:35 +0000)]
added resyncs counter
git-svn-id: https://svn.code.sf.net/p/freetel/code@3054
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drowe67 [Fri, 24 Feb 2017 23:37:33 +0000 (23:37 +0000)]
tweaks to fix C99 issues
git-svn-id: https://svn.code.sf.net/p/freetel/code@3053
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hobbes1069 [Fri, 24 Feb 2017 15:12:08 +0000 (15:12 +0000)]
Update C standard flag logic as gnu99 is the minimum required.
git-svn-id: https://svn.code.sf.net/p/freetel/code@3052
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drowe67 [Fri, 24 Feb 2017 04:44:56 +0000 (04:44 +0000)]
added FreeDV GUI support for attenuating one carrier, tested OK, and mapping of carriers to bit error plots and histograms checkes out
git-svn-id: https://svn.code.sf.net/p/freetel/code@3051
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drowe67 [Fri, 24 Feb 2017 04:44:24 +0000 (04:44 +0000)]
cohpsk and freedv API support for attenuating once carrier for 700C test purposes
git-svn-id: https://svn.code.sf.net/p/freetel/code@3050
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drowe67 [Thu, 23 Feb 2017 03:51:22 +0000 (03:51 +0000)]
1600 test frame hitsogram working again
git-svn-id: https://svn.code.sf.net/p/freetel/code@3049
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drowe67 [Thu, 23 Feb 2017 03:36:56 +0000 (03:36 +0000)]
GUI support for bit error plot/historam before diversity combination, working OK on test using alsa loopback, part of 700C instrumentation
git-svn-id: https://svn.code.sf.net/p/freetel/code@3048
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drowe67 [Thu, 23 Feb 2017 03:35:46 +0000 (03:35 +0000)]
added support for measuring bit errors before diversity combination, part of 700C instrumentation
git-svn-id: https://svn.code.sf.net/p/freetel/code@3047
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