[Discuss-gnuradio] saving raw data after correct frame reception

2014-04-22 Thread Nemanja Savic
hi all guys, I would like to be able to store raw data into file after correct frame reception. For this reason I suppose there should be a block that buffers raw data and wait for the trigger to store into file. The trigger can only be sent from packet deframer after checking validity. So my

[Discuss-gnuradio] issue about message port of grextras

2014-04-22 Thread Damon
Hi all, Recently I am learning the grextras project. I am confused about the message port which is designed in grextras. Why will we not get a error when the message ports do not connect to other message ports? I thought those port actually is data stream ports, so they should be connected to

Re: [Discuss-gnuradio] Phase errors and expected behavior of in-flight samples when a flowgraph is reconfigured

2014-04-22 Thread Alexandru Csete
Kevin, It is my understanding that top_block.disconnet_all() only disconnects blocks that were connected at the top block level and will not destroy your hier_blocks. Alex On Tue, Apr 22, 2014 at 2:42 AM, Kevin Reid kpr...@switchb.org wrote: On Apr 21, 2014, at 10:43, Tom Rondeau

[Discuss-gnuradio] How to start with stream tags

2014-04-22 Thread Hoang Ngo Khac
Dear List, I want to make time synchronization for implementation of two-way relaying network. Each node contain both RX chain and TX chain but they should not run simultaneously (half-duplex mode). Therefore, the TX chain is on when it is needed to transmit, and off when the transmission is

Re: [Discuss-gnuradio] How to start with stream tags

2014-04-22 Thread Tim Newman
Try: http://gnuradio.org/doc/doxygen-3.7/page_stream_tags.html or http://gnuradio.org/redmine/attachments/download/252/06-rondeau-stream_tags.pdf or even http://bit.ly/1kWXdCl On Tue, Apr 22, 2014 at 6:29 AM, Hoang Ngo Khac khachoang1...@gmail.comwrote: Dear List, I want to make time

Re: [Discuss-gnuradio] GNU Radio Live SDR Environment 2014-0419 snapshot released

2014-04-22 Thread John Malsbury
Thanks for adding gr-mac, Johnathan. Of course, it wouldn't be where it is without Balint, who really took it to the next level. It's still a work-in-progress, but we're happy with the direction its headed! -John On Sun, Apr 20, 2014 at 9:55 AM, Johnathan Corgan johnat...@corganlabs.comwrote:

[Discuss-gnuradio] Slicing a complex signal.

2014-04-22 Thread Jordan Johnson
I will try to explain this the best I can.. but here is what I am looking to do: I have a digital signal that takes up 100kz of bandwidth. I want to split this signal and push both halves apart. The best way to explain this is, say you have an AM signal. Normally, the LSB and USB are right on top

[Discuss-gnuradio] How to reduce reconfiguration latency

2014-04-22 Thread Bolin Hsu
I have a GNU radio based software that uses IQ modulation on the sending side and IQ demodulation on the receiving side. In my application, the transmitted signal could be scaled up to +/-5% in time domain. I don't have control to this scaling. So I take two actions to compensate for the scaling:

Re: [Discuss-gnuradio] How to start with stream tags

2014-04-22 Thread Hoang Ngo Khac
Thank you Mr. Newman, I've read (1) GNU Radio Manual on stream tags, (2) slides of Tom Rondeau and (3) Block Coding Guide about stream tags in http://gnuradio.org/redmine/projects/gnuradio/wiki/BlocksCodingGuide#Stream-Tags. They are general and I would like to find some specific example. Anyway,