Steven Franke
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7d52234371
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Fix a bug in wspr4 signal generation.
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2020-04-15 07:58:31 -05:00 |
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Steven Franke
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c5e2593979
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Add routines necessary to generate simulated 'wspr4' wav files.
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2020-04-14 10:34:00 -05:00 |
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Joe Taylor
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e82b9ffa38
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Allow entry and decoding of WSPR-format message in ldpcsim174_74.
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2020-04-13 15:43:34 -04:00 |
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Steven Franke
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65fa6aed6c
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Add a new (174,74) LDPC code (regular, column weight 3) and supporting files.
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2020-04-13 10:23:02 -05:00 |
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Steven Franke
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e972fbbfec
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Change sync word to 4 concatenated 4x4 Costas arrays. Tweaks to optimize sync efficiency.
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2020-04-07 13:18:41 -05:00 |
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Steven Franke
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1044342245
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Use Joe's sync vector.
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2020-04-05 14:40:19 -05:00 |
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Steven Franke
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583f9d2f0e
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Comment out a debug write statement.
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2020-04-03 10:39:51 -05:00 |
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Steven Franke
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cf5a69d25b
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Updates and additions to wsprcpm files.
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2020-04-03 10:27:43 -05:00 |
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Steven Franke
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0f2793dcbe
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Update calls to bpdecode174_91.
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2020-03-17 12:18:10 -05:00 |
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Steven Franke
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cf07d478ac
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Some repairs and tweaks to development-related programs in fsk4hf directory.
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2020-02-09 16:13:52 -06:00 |
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Steven Franke
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e9160f3c2f
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Make ldpcsim174_91 work again. Scale SNR2500 assuming coherent BPSK, same Eb as FT8.
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2020-02-08 14:49:21 -06:00 |
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Steve Franke
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66e3f11fba
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Add ft4 files in lib/ft4.
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2019-01-25 16:01:34 -06:00 |
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Steve Franke
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3bdbf19d1d
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Make ft4sim and ft4d work.
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2019-01-22 11:01:28 -06:00 |
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Steve Franke
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b4639b77d0
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Fix CMakeLists.txt so that ft2_decode still builds. Fix a bug in ft4d - sync now seems to work.
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2019-01-21 19:52:13 -06:00 |
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Steve Franke
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f2dc394c84
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Add ft4 files; ft4sim works, ft4d is work in progress.
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2019-01-21 19:31:54 -06:00 |
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Steve Franke
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f447fe49e1
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Fix some indexing problems. Create subroutine ft2_gfsk_iwave.f90 for use with ft2.exe. Needs testing.
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2019-01-17 15:25:06 -06:00 |
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Steve Franke
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7701516b43
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ft2sim now creates a GFSK waveform with BT=1.0. It also adds raised cosine ramp up and down at the beginning and end of the transmission.
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2019-01-17 14:01:40 -06:00 |
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Bill Somerville
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074914d607
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Fix merge issues
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2019-01-16 20:55:01 +00:00 |
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Steve Franke
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348e7c8ad5
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In principle, ft2d can now decode multiple signals. Not yet tested.
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2019-01-13 15:44:16 -06:00 |
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Steve Franke
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1fb89929a9
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Make ft2d slightly more robust. Still very rough.
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2019-01-13 10:58:35 -06:00 |
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Steve Franke
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cf1fe6c3d6
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More work on FT2. New frame format is 16sync + 128codeword. Data chunk is assumed to be 2.5s long. A rudimentary sync routine is implemented which finds the single strongest signal.
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2019-01-12 13:28:10 -06:00 |
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Steve Franke
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f63f0301eb
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Tweak some decoder parameters for better performance.
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2019-01-10 10:35:09 -06:00 |
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Steve Franke
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e0658f183f
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Add simulator (ft2sim.f90) and decoder (ft2d.f90) for experimental medium-fast mode.
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2019-01-10 10:20:31 -06:00 |
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Steve Franke
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87b97039b6
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Remove a small bias in Watterson channel simulator channel amplitude.
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2018-10-25 16:39:17 -05:00 |
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Steve Franke
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9657617cdc
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Merge branch 'integrate-77bit' into develop
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2018-09-13 15:24:33 -05:00 |
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Steve Franke
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642540ff8f
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unpack77 now returns logical variable unpk77_success, which will be .false. if there is something obviously wrong with the message. Still to do: set the flag if the unpacked message contains CQ in an implausible place.
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2018-09-12 15:06:26 -05:00 |
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Steve Franke
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629d061e30
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Move a couple of simulation files to fsk4hf, which will eventually be excluded from releases.
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2018-09-12 13:46:40 -05:00 |
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Steve Franke
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af7feaf65a
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No need to examine every entry in the hash table. Just calculate the hash of OSD-produced callsigns and see if they are in the table. Add OSD decoding to the deep setting for wspr decoding.
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2018-09-10 17:01:50 -05:00 |
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Steve Franke
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0c60db50d3
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Experimental -o option for wsprd uses ordered-statistics decoder. Decodes are accepted only if the callsign exists in the hashtable.
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2018-09-09 20:30:23 -05:00 |
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Steve Franke
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fa1822bb4a
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Trying to re-implement osd for wspr.
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2018-09-08 16:50:15 -05:00 |
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Joe Taylor
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14385611be
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Code cleanup related to "bcontest". Auto-seq now OK for new NA VHF Contest messages.
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2018-07-11 10:13:42 -04:00 |
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Joe Taylor
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d95d2df5b6
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Old-style "NA VHF Contest" mode removed from all Fortran routines.
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2018-07-10 15:09:42 -04:00 |
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Steve Franke
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48b60eab71
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Make two sync passes, one for each sync array. Label candidates with their type and decode accordingly.
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2018-06-05 16:44:52 -05:00 |
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Steve Franke
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86a5ae6596
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costasxcorr is a Gnu Octave script that calculates the cross correlation between Costas arrays.
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2018-06-04 14:06:14 -05:00 |
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Steve Franke
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c4ee0a2b41
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Replace all references to code a with references to code c.
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2018-06-04 08:04:22 -05:00 |
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Steve Franke
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689711ff1f
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Add definitions for a new and improved (174,91) code - called code c
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2018-06-04 08:04:22 -05:00 |
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Steve Franke
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01a380084d
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Changes to make it easier to test different codes.
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2018-06-04 08:04:22 -05:00 |
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Steve Franke
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358081f280
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Changes necessary to build ldpcsim174_91.f90.
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2018-06-04 08:04:22 -05:00 |
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Steve Franke
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87f5510999
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ldpcsim174_91 now works
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2018-06-04 08:04:22 -05:00 |
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Steve Franke
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84c153f9a9
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Really add the new encoder and decoders.
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2018-06-04 08:04:22 -05:00 |
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Steve Franke
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7a228d8f7d
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Starting to implement a (174,91) code.
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2018-06-04 08:04:22 -05:00 |
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Steve Franke
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aeee9b62bb
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Hack CMakeLists.txt so that repo will build.
Modify CMakeLists.txt so that wspr5sim, wspr5d build.
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2018-06-04 08:04:22 -05:00 |
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Steven Franke
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75111eef66
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Bring some simulation tools up to date.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8664 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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2018-05-18 15:04:15 +00:00 |
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Joe Taylor
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70768618b8
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Correct typo in a comment.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8663 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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2018-05-17 18:32:11 +00:00 |
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Steven Franke
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8149fe24be
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More work on block detection for dpsk.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8644 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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2018-04-28 22:18:19 +00:00 |
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Steven Franke
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cfcec4d02f
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Add a rudimentary decoder for dpsk test mode. Hardwired sync only so far.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8637 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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2018-04-24 16:37:29 +00:00 |
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Steven Franke
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bd0d414365
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More work on a simulator for dpsk with root-raised-cosine pulses.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8632 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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2018-04-22 19:51:31 +00:00 |
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Steven Franke
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92a45a68c6
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More work on dpsk simulator.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8611 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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2018-04-13 00:26:47 +00:00 |
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Steven Franke
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8772a101dc
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Add some development routines.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8604 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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2018-04-08 17:07:08 +00:00 |
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Steven Franke
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1f9d73963b
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Update wsprcpm simulator and decoder.
git-svn-id: svn+ssh://svn.code.sf.net/p/wsjt/wsjt/branches/wsjtx@8603 ab8295b8-cf94-4d9e-aec4-7959e3be5d79
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2018-04-03 14:55:55 +00:00 |
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