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WSJT-X
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4,366 Commits 5 Branches 98 Tags 208 MiB
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4366 Commits

Author SHA1 Message Date
Joe Taylor c75a270872 Finish decoding of Types 1 and 3 (except for rpt/RRR/RR73/73). 2018-06-26 16:47:16 -04:00
Joe Taylor b0636b561b Basic function for message Types 0.0-0.5 and Type 1. 2018-06-26 16:34:38 -04:00
Joe Taylor 9d5a2e6f5a Through type 0.3. 2018-06-26 15:20:39 -04:00
Joe Taylor 9ccb96397d source-encode/decode of 77-bit messages OK through type 0.3. 2018-06-26 15:13:15 -04:00
Joe Taylor 2006fde28c Completed pack77/unpack77 through message Type 0.2. Still more to do! 2018-06-26 13:55:12 -04:00
Steve Franke 03abada09b More progress on sequence demodulator. Can now do nsymb=1,2, and/or 3. 2018-06-26 11:11:58 -05:00
Joe Taylor 0adcfc667f Add files for source encoding and decoding of 77-bit messages. 2018-06-26 08:33:13 -04:00
Steve Franke 7684bd0e78 Work toward a generalized sequence detector for nsymbols=1, 2, or 3. Works for nsymbol=3, but not yet for nsymbol=1, or 2. 2018-06-25 17:01:34 -05:00
Joe Taylor bd5aec3f31 More tweaks to description of 77-bit message types. 2018-06-23 15:15:10 -04:00
Joe Taylor 539ec3d465 test 2018-06-23 12:15:47 -04:00
Joe Taylor 35b53766cb Add info on 28-bit integers used for standard callsigns. 2018-06-23 11:54:40 -04:00
Joe Taylor 7266d407ff Amended rules for 77-bit message types. 2018-06-22 16:36:14 -04:00
Steve Franke 0f5759270e Added 2-symbol sequence detection for proof-of-concept tests. 2018-06-22 11:20:28 -05:00
Joe Taylor 2edcebef40 Further progress toward defining the 77-bit message types. 2018-06-21 15:38:08 -04:00
Joe Taylor 96f3fa5810 Add directory 77bit and its contents. 2018-06-21 10:51:19 -04:00
Joe Taylor 2e947f4f2b Add files in .../lib/77bit. 2018-06-21 10:50:03 -04:00
Joe Taylor f8bb7f4477 Implement a valid scheme for computing S/N in JT4 mode. 2018-06-18 13:41:26 -04:00
Steve Franke 3f8c218ebe 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. 2018-06-17 12:11:32 -05:00
Steve Franke 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. 2018-06-17 08:44:10 -05:00
Steve Franke 2cdb164446 Move CRC13 creation into encode128_90.f90 and CRC checking into bpdecode128_90.f90. 2018-06-16 16:42:02 -05:00
Steve Franke e16e78790a Create chkcrc13a.f90. Should chkcrc12a, chkcrc13a, and chkcrc14a be combined into one routine? 2018-06-16 09:04:51 -05:00
Steve Franke c18338b83b Fix the calculation of symbol error probability. 2018-06-16 09:03:32 -05:00
Joe Taylor e588836997 Add a description of the "Spec nn%" spinner on Wide Graph. 2018-06-15 13:22:04 -04:00
Steve Franke 6846964170 Add 'code b' - a better (128,90) code. Code b has irregular column weights - 80% weight 3 and 20% weight 4. 2018-06-14 15:38:58 -05:00
Joe Taylor e6f6dc9717 Add to manual: must enable VHF features to use NA VHF Contest mode. 2018-06-14 13:40:40 -04:00
Joe Taylor b887919d3e Update .gitignore 2018-06-14 11:32:20 -04:00
Joe Taylor 67b5c80e1a Update the contest ideas. 2018-06-14 11:31:16 -04:00
Steve Franke 1aeaa1715b Fix up ldpcsim144 for comparisons with ldpcsim128_90. 2018-06-14 09:59:49 -05:00
Steve Franke 5da3986f0a More work on (128,90) code. ldpcsim128_90 works now. 2018-06-14 09:30:41 -05:00
Joe Taylor 0344c14f99 Add the white paper digi-contest.txt. 2018-06-14 10:14:30 -04:00
Joe Taylor 3705693dbd Add 50.323 and 144.174 as FT8 frequencies. 2018-06-14 09:17:56 -04:00
Joe Taylor 1bf9f22760 Deactivate the "not_GA" warning message at startup. 2018-06-13 15:37:42 -04:00
Steve Franke 3ac119fb99 Progress toward a working ldpc128_90 simulator. Compiles, but does not yet work. 2018-06-13 11:34:00 -05:00
Steve Franke 41920af89a Add routines that will implement 77-bit messages for MSK144. Initial tests will use a (128,90) code. 2018-06-13 09:40:04 -05:00
Steve Franke 9b63fe6ac7 Fix a bug in ldpcsim144 so that nerrhisto.dat is calculated and printed. 2018-06-12 16:00:06 -05:00
Steve Franke a5837bd5c7 AP decoding now works for type 2 frames. Also cleaned up and simplified AP implementation in ft8b_2. 2018-06-11 15:10:44 -05:00
Bill Somerville 7ac0afc60b Docs for boost subtree maintenance 2018-06-09 22:31:46 +01:00
Bill Somerville 5abe797e3c Merge commit '4ebe6417a5fce5f0994fc0c31bebf732be96a07c' as 'boost' 2018-06-09 21:48:33 +01:00
Bill Somerville 4ebe6417a5 Squashed 'boost/' content from commit b4feb19f2 
git-subtree-dir: boost
git-subtree-split: b4feb19f287ee92d87a9624b5d36b7cf46aeadeb
 2018-06-09 21:48:32 +01:00
Bill Somerville b5eabc6d6a Remove original svn vendor branch imported boost subtree in prep for git-subtree solution 2018-06-09 21:47:03 +01:00
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]. 2018-06-09 13:05:11 -05:00
Steve Franke b03acdfce3 Define a custom button labeled *Discard Measured* to replace the standard *Discard* button. This is being done to ensure that the button label is the same on different platforms. Update the documentation to reference the new Button name. 2018-06-08 17:39:57 -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 a3d9cf8bcd Fix a bug that could cause all log-likelihoods to be NaN in some cases. 2018-06-07 14:24:35 -05:00
Steve Franke a0db6a8a08 Disable AP passes for type 2 frames, for now. Write some diagnostics to lun 81. 2018-06-07 11:40:25 -05:00
Steve Franke b84602d059 Zero the apsymbols for type 2 frames, for now. 2018-06-06 11:28:44 -05:00
Steve Franke a23e2b6f8b Fix a bug that caused some second-decoding-attempt log-likelihoods to become NaN. 2018-06-06 11:21:00 -05:00
Steve Franke badc639777 Fix a bug in sync8d.f90. Switching between Costas arrays should work now. 2018-06-06 10:59:49 -05:00
Steve Franke 48b60eab71 Make two sync passes, one for each sync array. Label candidates with their type and decode accordingly. 2018-06-05 16:44:52 -05:00
Steve Franke 772b1bd5fa ft8sim can now generate old (174,87) or new (174,91) frames. Frame type is selected using the itype command line parameter. 2018-06-05 08:40:00 -05:00