initial checkin of ldpc simulation files

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1343 01035d8c-6547-0410-b346-abe4f91aad63
refactored ldpc funcs, partially completed

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1344 01035d8c-6547-0410-b346-abe4f91aad63
Add better error message when an in-source build is attempted. Add workaround for bootstrap build of wxWidgets due to cmake bug. Update minimum wxWidgets version to 3.0.0.

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1345 01035d8c-6547-0410-b346-abe4f91aad63
first pass at ldpc ut script

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1346 01035d8c-6547-0410-b346-abe4f91aad63
unique word insertion for ldpc frame sync

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1347 01035d8c-6547-0410-b346-abe4f91aad63
unique word sync that handles different amplitude rx signals

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1348 01035d8c-6547-0410-b346-abe4f91aad63
ldpc decode and sync working with no errors

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1349 01035d8c-6547-0410-b346-abe4f91aad63
first pass of integrating fdmdv modem with ldpc simulation in Octave

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1353 01035d8c-6547-0410-b346-abe4f91aad63
ldpc simulation working, but perf not that great in ccir poor 4dB channel

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1394 01035d8c-6547-0410-b346-abe4f91aad63
patch from Bertrik, thanks

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1395 01035d8c-6547-0410-b346-abe4f91aad63
working up simulation for various QPSK modulation schemems on HF channel

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1396 01035d8c-6547-0410-b346-abe4f91aad63
getting correct BER courves with filter on AWGN

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1397 01035d8c-6547-0410-b346-abe4f91aad63
included calcs of Es/No to noise variance

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1398 01035d8c-6547-0410-b346-abe4f91aad63
HF channel model and carrier power normalisation, but dqpsk broken

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1399 01035d8c-6547-0410-b346-abe4f91aad63
doppler spreading files from pathsim

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1401 01035d8c-6547-0410-b346-abe4f91aad63
moved path for doppler spreading files

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1402 01035d8c-6547-0410-b346-abe4f91aad63
added ldpc codec to QPSK test simulation

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1403 01035d8c-6547-0410-b346-abe4f91aad63
ldpc working, performance not that great, about to try simplified model

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1404 01035d8c-6547-0410-b346-abe4f91aad63
getting good results, compared to current DQPSK FreeDV, 6dB gain using rate 3/4 and 10dB gain using rate 1/2

git-svn-id: https://svn.code.sf.net/p/freetel/code/codec2-dev@1405 01035d8c-6547-0410-b346-abe4f91aad63