Commit Graph

2642 Commits

Author SHA1 Message Date
Steven Franke
4e70609223 Minor format change for nutc in fst4_decodes.dat. 2020-12-28 09:27:48 -06:00
Steven Franke
d8be8ff0e5 FT8: Make nagain work. 2020-12-26 09:46:19 -06:00
Steven Franke
1ba788ecc3 FT8: Commit the rest of the fix for the nagain crash. 2020-12-25 12:31:40 -06:00
Steven Franke
27bf7bb964 FT8: Fix jt9 crash when nagain is invoked. 2020-12-25 12:22:25 -06:00
Steven Franke
b26d29dd1e Avoid a possible of bounds error. Compute some more decode diagnostic data. 2020-12-23 11:45:13 -06:00
Steven Franke
c6e42549c4 Remove hmod from command line parameters for fst4sim. 2020-12-22 13:12:58 -06:00
Steven Franke
71ed4776f9 For fst4sim, use Lorentzian fading spectrum when fspread is negative. 2020-12-22 12:33:24 -06:00
Steven Franke
17195680ee Don't waste time on excess BP iterations when doing K=50. Decode a little deeper. 2020-12-15 14:31:46 -06:00
Steven Franke
c87926e657 Append decoder data to file fst4_decodes.dat instead of overwriting. 2020-12-15 10:32:57 -06:00
Steven Franke
1878685134 If file decdata is present in the data directory, then write detailed decoder data to file fst4_decodes.dat in the same directory. 2020-12-15 09:46:16 -06:00
Steven Franke
2960adc557 FST4W: Use K=66 for first OSD decode attempt and for updating fst4w_calls.txt. Use K=50 for 2nd attempt. 2020-12-14 16:25:37 -06:00
Steven Franke
939e35bd26 More work on K=50 decoding. 2020-12-14 10:19:48 -06:00
Steven Franke
771e71bc84 Remove some debug prints. 2020-12-13 15:47:38 -06:00
Steven Franke
535c02d900 Implements decoding of FST4W messages as (240,50) crc-less codewords.
By cascading the full 24-bit crc generator matrix with the (240,74) LDPC code generator, create a (240,50) generator that is used to decode with approximately 1 dB better sensitivity than the (240,64) with 14-bit CRC approach that is normally used. This approach treats the CRC bits as additional parity bits and provides no means for identifying incorrect codewords. All codewords on the list generated by the OSD algorithm have CRCs that match the CRC of the message payload. Codewords are validated by unpacking the message and comparing the unpacked message with the list of stored callsign/grid pairs stored in the fst4w_calls.txt file.
2020-12-13 15:33:12 -06:00
Joe Taylor
84591fa2ef Protect against a bounds error with very large FTol. 2020-12-08 11:53:22 -05:00
Bill Somerville
2964bc6295
Merge branch 'develop' into feat-fst280 2020-12-06 22:27:07 +00:00
Joe Taylor
4b42937c35 Minor tweaks in q65_sync. 2020-12-06 08:12:58 -05:00
Joe Taylor
f948ba7c29 Allow fDop = 0.0 in test_q65. 2020-12-06 08:12:16 -05:00
Joe Taylor
a47f5e5103 Correct what appears to be an error in q65_intrinsics_fastfading: max hidx=63, not 64? 2020-12-06 08:09:28 -05:00
Joe Taylor
53f5e26580 First attempt ar reasonabkle values for nsmo and ibw range. 2020-12-05 13:46:44 -05:00
Joe Taylor
c50134691d Adjustments to test_q65 for wider submodes. 2020-12-05 13:46:07 -05:00
Joe Taylor
742e2ef59f Fix pctile for larger arrays. 2020-12-05 11:09:27 -05:00
Joe Taylor
9f8336de4e Code cleanup. 2020-12-05 11:09:15 -05:00
Joe Taylor
077811ae6d Update q65params.f90. 2020-12-05 11:03:16 -05:00
Joe Taylor
6416777278 Set ':' as the "mode character" for Q65. 2020-12-04 15:55:03 -05:00
Joe Taylor
8b9b71c894 Fix the "off by one" issue in measuring f0 for list decodes. 2020-12-04 15:37:54 -05:00
Joe Taylor
3dd34e13ba dd "MyCall DxCall DxGrid" to list. Set PLOG_MIN=-240. No list decoding if DxCall is not defined. 2020-12-04 15:29:46 -05:00
Joe Taylor
aaf832cbd2 Revert "Threshold in q65_sync.f90 increased to -250 only for reports. Assumes that the list is in the order defined in q65_set_list.f90 (reports are at indexes 5..56). Beware if q65_set_list is changed!!!"
This reverts commit bb08150e4b.
2020-12-04 12:56:45 -05:00
Joe Taylor
978ea0f3b5 Revert "forgot to uncomment fort.55 output. corrected"
This reverts commit 72bc2572e6.
2020-12-04 12:56:23 -05:00
Nico Palermo/IV3NWV
72bc2572e6 forgot to uncomment fort.55 output. corrected 2020-12-04 10:07:56 +01:00
Nico Palermo/IV3NWV
bb08150e4b Threshold in q65_sync.f90 increased to -250 only for reports. Assumes that the list is in the order defined in q65_set_list.f90 (reports are at indexes 5..56). Beware if q65_set_list is changed!!! 2020-12-04 09:43:41 +01:00
Joe Taylor
53e4052b8c Q65 additions for diagnostic purposes. 2020-12-03 14:28:30 -05:00
Bill Somerville
ac6a6d0cd7
Fail wsprd if data directory specified not accessible
Also fixed trivial memory leak on error exit.
2020-12-03 13:12:12 +00:00
Bill Somerville
3134dd8a60
Removed incorrect pointer declaration, tnx to Rud, K5RUD 2020-12-03 12:20:14 +00:00
Joe Taylor
d1ac5f71e2 Remove several diagnostic writes. 2020-12-01 11:31:52 -05:00
Joe Taylor
df3169ba22 Update test_q65. 2020-12-01 11:24:21 -05:00
Joe Taylor
6b540aaad0 Correct offset in (i,j) indices for selecting s3 from s1. 2020-12-01 11:23:35 -05:00
Nico Palermo/IV3NWV
70e0a84fe8 corrected a compile error. q65_llh declared as an external variable in q65.h and placed in q65.c 2020-12-01 04:13:30 +01:00
Nico Palermo/IV3NWV
68d964b5c7 merged Joe's changes in decode_fullaplist 2020-12-01 03:41:23 +01:00
Nico Palermo/IV3NWV
baf427c358 Merge branch 'feat-fst280' of bitbucket.org:k1jt/wsjtx into feat-fst280 2020-12-01 03:26:37 +01:00
Nico Palermo/IV3NWV
5a3dd69331 decode_fullaplist updated. the decoding threshold is now adjusted in function of the number of codewords passed 2020-12-01 03:26:00 +01:00
Joe Taylor
a03758e490 Add a file that was missing. 2020-11-30 17:44:33 -05:00
Joe Taylor
65dda491d2 More Q65 code cleanup. Make submodes higher than A work with List Decoding. 2020-11-30 15:20:19 -05:00
Joe Taylor
7cb87e315b Fix a format. 2020-11-30 14:15:59 -05:00
Joe Taylor
adc4c3d78a More Q65 cleanup. Single-digit at end of line. 2020-11-30 14:13:37 -05:00
Joe Taylor
5c947178ce Protect against a bounds error. 2020-11-30 13:26:14 -05:00
Joe Taylor
de6f5e4975 Q65 code cleanup. Use 3-digit format for the end-of-line flag. 2020-11-30 13:14:18 -05:00
Joe Taylor
8285fd28a8 List decoding now supports 57 list messages. 2020-11-30 11:41:50 -05:00
Joe Taylor
afc4f2fb54 Reorganize things in q65_sync. 2020-11-30 10:45:52 -05:00
Joe Taylor
9ff6f5b4d3 Temporary save, much work in progress. 2020-11-30 09:52:47 -05:00