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root / gnuradio-core / src / python / gnuradio / blks2impl / ofdm_sync_ml.py @ 0e8c3542

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# Date Author Comment
2ae538ed 04/18/2008 04:06 pm Tom Rondeau

Improved performance of the ML sync (with added computations). It uses the energy calculation to normalize the correlation and the timing sequence and correlation together to determine the timing. This works for frequencies of +-0.6 offset, which is a limiting factor still in the performance but better than the previous checkin....
42b48770 04/15/2008 05:12 pm Tom Rondeau

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....
ce165145 01/02/2008 05:35 pm Tom Rondeau

Merging ofdm2 branch -r7047:7321 into trunk. This updates the OFDM code to hier_block2 in blks2impl and removed from blksimpl. The new code
implements a decision feedback sync loop to lock the phase/freq, removes two unnecessary premables and performs frame sync and equalization off...
b5bd9e6e 10/18/2007 01:47 am Johnathan Corgan

Remove non-converted OFDM code from blks2impl (examples still use blks, not blks2.)

git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@6649 221aa14e-8319-0410-a670-987f0aec2ac5
e692e713 09/18/2007 06:59 pm Johnathan Corgan

Merge r6461:6464 from jcorgan/t162-staging into trunk.

  • Final gr.top_block and gr.hier_block2 implementation inside
    gnuradio-core/src/lib/runtime
  • Implementation of gr.hier_block2 versions of all the old-style blocks
    in blks. These live in blks2....