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git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8457 221aa14e-8319-0410-a670-987f0aec2ac5
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git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8456 221aa14e-8319-0410-a670-987f0aec2ac5
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the 9513 divider
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8444 221aa14e-8319-0410-a670-987f0aec2ac5
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git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8441 221aa14e-8319-0410-a670-987f0aec2ac5
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Changed phase detector from atan2 to gr_fast_atan2f for speedup.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8433 221aa14e-8319-0410-a670-987f0aec2ac5
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scheme.
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git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8317 221aa14e-8319-0410-a670-987f0aec2ac5
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(1) Close out_f before removing it in
gnuradio-core/src/python/gnuradio/gr/qa_wavefile.py (to prevent make check
failure).
(2) Don't permanently change PATH in config/sdl.m4 (to prevent real
problems in MinGW and potential problems for any code that runs after
sdl.m4 and depends on PATH).
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8316 221aa14e-8319-0410-a670-987f0aec2ac5
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an example of SPE assembler (memset.S), a new file of macros for use
with SPE assembler (gc_spu_macs.h), and an extended QA framework. The
easy to use QA framework adds support for SPE utility code that's
usually not called from the PPE, such as memset. See
qa_gcell_general.{h,cc} and qa_memset.c for example usage.
memset achieves 44GB/s on the SPE. That's within 3% of ideal.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8308 221aa14e-8319-0410-a670-987f0aec2ac5
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atsc_depad.cc. The problem has to do with confusion between input and output
sizes, as well as some very wrong pointer math (Dan Halperin).
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flowgraph reconfiguration bug reported by Tim O'Shea and Mark Schneider.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8271 221aa14e-8319-0410-a670-987f0aec2ac5
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Radio interface to the Cell Broadband Engine.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8244 221aa14e-8319-0410-a670-987f0aec2ac5
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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.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8222 221aa14e-8319-0410-a670-987f0aec2ac5
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Tufvesson, et al. that does a bit more work than the Schmidl and Cox to produce a more identifiable peak for the timing. This seems to work well in the simulation for low frequency errors. The correlation doesn't seem to track well, though. See the comments for more info. Also, the peak detection requires unity amplitude for the threshold detection. So, who wants to make an OFDM AGC?
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8217 221aa14e-8319-0410-a670-987f0aec2ac5
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in the OFDM receiver. Its only used for testing in the simulation mode if you want to remove any affects of the synchronization blocks. You have to manually edit the number of symbols and any fractional frequency offset you might want to use.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8213 221aa14e-8319-0410-a670-987f0aec2ac5
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estimation is horrible and it still has some problems that may be a fundamental issue with the idea. I need to get the paper this was based off of to review it.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8212 221aa14e-8319-0410-a670-987f0aec2ac5
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changes:
* gc_make_job_manager now returns a boost::shared_ptr
* opts.program_handle is now a boost::shared_ptr
* two new functions for getting a program handle
* look_proc and alloc_job_desc now throw on error
* static methods for setting and getting a single job manager
* new exception hierarchy
* mv gcell/src/lib/procs gcell/src/lib/wrapper
* added libfft. Currently inverse xform is broken
* gcell-embedspu-libtool creates libtool complaint .ko's from SPE executables
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8209 221aa14e-8319-0410-a670-987f0aec2ac5
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distcheck vs. command-line, so commented out for now.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8207 221aa14e-8319-0410-a670-987f0aec2ac5
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and 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-C
implementation, and is designed for continuous streaming data, not packets.
The encoder takes MSB packed bytes and outputs channel symbols 0 or 1.
The decoder uses soft-decision Viterbi decoding on a floating point stream of
(possibly noise corrupted) [1.0, 1.0] symbols, and outputs MSB packed
decoded bytes.
Benchmarking on a 2.16 GHz Intel Core 2 Duo shows 4.7 Mbps decoding rate at
100% CPU usage (single core). (There is a newer KA9Q library that implements
SIMD speed ups with correspondingly faster performance.)
The KA9Q library is placed into src/lib/viterbi. It could use some cleanup,
file/function renaming, and refactoring, or even replacement with the newer
libfec code that is available.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8206 221aa14e-8319-0410-a670-987f0aec2ac5
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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.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8199 221aa14e-8319-0410-a670-987f0aec2ac5
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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.
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applications as background daemon processes instead of foreground applications.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8191 221aa14e-8319-0410-a670-987f0aec2ac5
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decimates. Trunk passes distcheck.
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output.
git-svn-id: http://gnuradio.org/svn/gnuradio/trunk@8186 221aa14e-8319-0410-a670-987f0aec2ac5
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the half-band filter in the USRP.
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