11 Commits

Author	SHA1	Message	Date
Steven Franke	08baa50a01	Experimental change to enable OSD decoding for MSK144 when ntol .le. 50 Hz	2020-02-13 08:48:51 -06:00
Steve Franke	7a40bf2e4b	Use separate hash tables for 10, 12, and 22 bit hashes. Make unpacking i3=4 messages depend on whether unpack is being done on a received message, or a to-be-transmitted message. Give mycall13 priority over hash table entries in certain contexts.	2018-12-20 15:08:29 -06:00
Steve Franke	642540ff8f	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.	2018-09-12 15:06:26 -05:00
Steve Franke	622ed4a3ab	Working toward whole-hog switchover to new LDPC code with 77 bit messages in MSK144.	2018-07-07 09:44:52 -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	c18338b83b	Fix the calculation of symbol error probability.	2018-06-16 09:03:32 -05:00
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
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