Merged r8195:8205 from jcorgan/ecc into trunk. Adds convolutional encoderand decoder corresponding to the R=1/2, K=7 CCSDS standard ("Voyager").
This code is a GNU Radio wrapper around a 1995-era KA9Q portable-Cimplementation, and is designed for continuous streaming data, not packets....
Mostly fixed the van de Beek ML synchronization scheme. Instead of using the CP timing signal, it correlates against the known preamble just to send along the timing trigger. This works nicely and keeps the frequency more constant in the receiver since it updates the estimate every received symbol. Read the comments inside to see why it's 'mostly fixed' -- this was mostly proving a point for myself today....
Adjusting structure a bit to redistribute responsibilities. This does not change the behavior or performance at all. The sync. block only calculates the frequency and timing signals and now outputs the fine frequency adjustment signal from output 0 and the timing signal for the start of the packet from output 1....
Fix typo in previous check-in
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8194 221aa14e-8319-0410-a670-987f0aec2ac5
Addes gr.cpfsk_bc(), a continuous phase frequency shift keying modulator block.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8193 221aa14e-8319-0410-a670-987f0aec2ac5
Adds gru.daemonize() and example application. Simplifies running GNU Radio applications as background daemon processes instead of foreground applications.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8191 221aa14e-8319-0410-a670-987f0aec2ac5
Adds gr.integrate_XX for ss, ii, ff, and cc. Sums successive samples and decimates. Trunk passes distcheck.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8190 221aa14e-8319-0410-a670-987f0aec2ac5
Fixes typo in r8188.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8189 221aa14e-8319-0410-a670-987f0aec2ac5
bug in gr_argmax_XX.cc.t fixed
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8188 221aa14e-8319-0410-a670-987f0aec2ac5
fixing bug in gr_max_XX.cc.t and modifying qa_max.py to test fix
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8187 221aa14e-8319-0410-a670-987f0aec2ac5
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