Steve Franke
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f7d423296f
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Minor code cleanup.
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2018-07-29 17:15:02 -05:00 |
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Steve Franke
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b67589d29f
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Bring isync=1 message simulator, ft8sim, up to date. Fix ap decoding for isync=1 messages.
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2018-07-29 16:29:11 -05:00 |
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Steve Franke
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df0b5e2622
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Progress on AP decoding for 77bit messages. AP is basically working for regular i3=1 messages.
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2018-07-28 17:32:45 -05:00 |
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Steve Franke
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750bf569f3
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ft8sim2: make it easier to identify callsign and grid bits in simulated messages.
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2018-07-28 09:26:54 -05:00 |
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Steve Franke
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bee1ecd109
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Detect and reject messages with invalid i3 and or n3.
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2018-07-28 08:50:50 -05:00 |
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Joe Taylor
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017629ac36
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Suppress any "QU1RK" decodes, they are necessarily bad.
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2018-07-27 10:43:58 -04:00 |
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Steve Franke
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59f713ba76
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The change committed to decodedtext.cpp fixes a crash that occurred when processing certain isync=2 decodes. Is this the right fix? Other changes are minor code cleanups.
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2018-07-17 17:48:23 -05:00 |
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Steve Franke
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ab7c811552
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Remove bcontest from ft8sim2.f90 so that it works.
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2018-07-17 16:55:22 -05:00 |
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Joe Taylor
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2c5dd053f3
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Don't send "mygrid" where it's no longer needed.
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2018-07-11 16:32:08 -04:00 |
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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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c1e71a46ef
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Remove more "bcontest" stuff from Fortrn code.
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2018-07-10 15:32:59 -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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Steven Franke
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e7b19b29b0
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Screen out FT8 decodes with excessively large number of hard errors. These are almost certainly undetected errors.
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2018-07-08 13:29:12 +00:00 |
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Steven Franke
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8eb58a47ba
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Fix a problem in ldpcsim174_91.f90.
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2018-07-08 13:19:22 +00:00 |
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Steve Franke
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fd0ad33028
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MSK144: Wholesale changeover to (128,90) code with 77-bit messages. Compiles and doesn't crash, but communication between two instances has not been tested.
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2018-07-07 10:35:59 -05:00 |
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Steve Franke
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42f75bf404
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Fix graymap.
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2018-07-07 08:18:31 -05:00 |
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Steve Franke
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5948b671eb
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Still working on getting c++/fortran interface right.
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2018-07-06 18:14:56 -05:00 |
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Steve Franke
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b83b66e665
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Changed genft8 and related routines to accept 37 char message and return 37 char msgsent. For now, in mainwindow, just copy the 22 char message into message37.
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2018-07-05 15:32:04 -05:00 |
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Joe Taylor
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e5e81e01fb
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Make packjt77 into a module; move all its routines into file packjt77.f90.
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2018-07-05 14:07:17 -04:00 |
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Steve Franke
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4b8ea3ef45
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Wire up the 'Decode only 77-bit messages' checkbox.
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2018-07-05 07:51:10 -05:00 |
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Steve Franke
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ed92d5a86c
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SNR estimator is broken for isync=2 messages, due to different signal normalization. For now, go back to SJF's old signal/(noise+interference) estimator.
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2018-07-04 16:58:24 -05:00 |
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Steve Franke
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a448dc5640
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Use 37 character message for de-duping. Comment out some code that needs to be updated to work with new message type.
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2018-07-04 16:20:12 -05:00 |
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Steve Franke
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50d8945bca
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Fix up Usage message for ft8sim2.
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2018-07-04 12:41:43 -05:00 |
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Steve Franke
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d70e3dbb26
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Fix some problems in ft8sim2.f90.
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2018-07-04 10:38:10 -05:00 |
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Steve Franke
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df652e383b
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More progress on making ft8sim2 and ft8b_2 encode and decode all message types. For now, decoder.f90 is hardwired to always print 37 characters.
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2018-07-04 10:15:01 -05:00 |
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Steve Franke
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91388f8ba2
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Create a separate simulation program, ft8sim2, for New Style 77 bit messages. Hashes are not handled yet. Needs more testing.
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2018-07-04 09:52:39 -05:00 |
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Steve Franke
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24f4792b23
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Fix incorrect reference to extract77 - should have been unpack77
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2018-07-03 15:59:24 -05:00 |
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Steve Franke
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57ebc30369
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Call the new extract77 in ft8b_2. Define msg37 and msgsent37 to replace their 22-bit predecessors.
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2018-07-03 15:34:39 -05:00 |
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Steve Franke
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bb12c7424d
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Module packjt77.f90 includes the 77bit utility programs called by pak77 and unpack77. Modify genft8_174_91.f90 to generate type 2 messages.
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2018-07-03 15:08:38 -05:00 |
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Steve Franke
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cf64cad091
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Send m_i3, m_n3, m_isync from mainwindow to genft8.f90 and use these to determine the type of generated message, according to the scheme described in lib/77bit/NewCode.txt.
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2018-07-03 14:37:50 -05:00 |
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Steve Franke
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9295726931
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Fix the sign of i3 when trying to subtract a type message.
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2018-07-03 11:24:42 -05:00 |
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Steve Franke
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385cda8e01
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Comment out a debug message.
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2018-07-03 11:17:21 -05:00 |
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Steve Franke
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3f897225fe
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genft8 now looks at sign of n3 and i3. If either sign is negative, generate a type 1 (classic) message. Otherwise generate type 2. Type 1 seems to work. Type 2 does not yet work.
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2018-07-03 11:10:47 -05:00 |
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Steve Franke
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91b7544ba1
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More progress toward switching to (i3,n3). wsjtx runs without crashing now.
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2018-07-03 09:49:11 -05:00 |
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Steve Franke
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c39dd63f79
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Send (i3,n3) from mainwindow to genft8. First steps at interpreting (i3,n3) to send itype=1 for classic messages and itype=2 otherwise. Very buggy at this stage.
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2018-07-03 09:28:16 -05:00 |
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Steve Franke
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5fc4fe6eda
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Fix an off-by-one error. Remove attempt to refine DT estimate using polynomial interpolation.
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2018-07-02 16:13:27 -05:00 |
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Steve Franke
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26de3219d3
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Fix an off-by-one problem.
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2018-06-30 14:56:19 -05:00 |
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Steve Franke
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83d81bdcd2
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Streamline the sequence detector code.
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2018-06-27 15:11:39 -05:00 |
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Steve Franke
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229ee09b99
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Minor code cleanup.
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2018-06-27 09:55:34 -05:00 |
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Steve Franke
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03abada09b
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More progress on sequence demodulator. Can now do nsymb=1,2, and/or 3.
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2018-06-26 11:11:58 -05:00 |
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Steve Franke
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7684bd0e78
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Work toward a generalized sequence detector for nsymbols=1, 2, or 3. Works for nsymbol=3, but not yet for nsymbol=1, or 2.
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2018-06-25 17:01:34 -05:00 |
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Steve Franke
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0f5759270e
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Added 2-symbol sequence detection for proof-of-concept tests.
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2018-06-22 11:20:28 -05:00 |
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Steve Franke
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3f8c218ebe
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Make changes to ft8b_2.f90 to accommodate the new 77-bit in/out encoding/decoding routines. With these changes, WSJT-X decodes (174,91) frames.
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2018-06-17 12:11:32 -05:00 |
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Steve Franke
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1a31e5b2d6
|
For (174,91) code, move CRC generation and testing into encode and decode routines. Make ldpcsim174_91.f90 work with the new encode/decode routines.
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2018-06-17 08:44:10 -05:00 |
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Steve Franke
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e16e78790a
|
Create chkcrc13a.f90. Should chkcrc12a, chkcrc13a, and chkcrc14a be combined into one routine?
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2018-06-16 09:04:51 -05:00 |
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Steve Franke
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a5837bd5c7
|
AP decoding now works for type 2 frames. Also cleaned up and simplified AP implementation in ft8b_2.
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2018-06-11 15:10:44 -05:00 |
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Steve Franke
|
6fe9e8f860
|
Remove the need to re-order the parity-check matrix columns for compatibility with the generator matrix. Redefine the codeword to have the form [91 message bits|83 parity bits].
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2018-06-09 13:05:11 -05:00 |
|
Steve Franke
|
68beed88a7
|
Change to Gray bit to symbol mapping for (174,91) messages.
|
2018-06-08 16:21:21 -05:00 |
|
Steve Franke
|
a0db6a8a08
|
Disable AP passes for type 2 frames, for now. Write some diagnostics to lun 81.
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2018-06-07 11:40:25 -05:00 |
|
Steve Franke
|
a23e2b6f8b
|
Fix a bug that caused some second-decoding-attempt log-likelihoods to become NaN.
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2018-06-06 11:21:00 -05:00 |
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