Re: [Discuss-gnuradio] help

Hi Mahongroo, You wrote > help I think we'd like to help you if you could explain with what you'd need help :) Best regards, Marcus On 20.09.2015 11:30, mahongroo wrote: > help > > > 发自网易邮箱手机版 > > > On 2015-09-20 00:00 , discuss-gnuradio-requ...@gnu.org >

Re: [Discuss-gnuradio] ofdm demod could not demodulate

Hi Gnoob16, it would be interesting to see your actual OFDM demodulator flowgraph, as well as the spectrum you see on the Qt frequency sink in your picture. However, the fact that the OFDM demod doesn't output anything usually simply means that it doesn't detect any packets coming in; are you sure

Re: [Discuss-gnuradio] change frequency in gr-ieee802-15-4 example transceiver_OQPSK.py

Hi Jaeho, there's three blocks that use the "freq" variable from that WX GUI slider: * the USRP source * the USRP sink * the FFT sink The first two have an input message port; you can connect a message-emitting block to these, and send PMTs containing commands to these [1]. The WX FFT sink doesn

[Discuss-gnuradio] Question about correlate_access_code_bb_impl

I am studying the code of correlate_access_code_bb_impl.cc for understanding its working. I see that the block is derive from "block" class of gr as written in correlate_access_code_bb_ts.h file class DIGITAL_API correlate_access_code_bb_ts : virtual public block I read earlier that blocks deri

Re: [Discuss-gnuradio] Soundcards / alsa block / sample rates

On Sun, Sep 20, 2015 at 3:46 PM, Andreas Ladanyi wrote: > i use a soundcard which could sample at a sample rate of 192 kbits. if i > have a look at the alsa block i could see options up to sample rate of 48k. > Because i could set the sample rate in the alsa block i think that the alsa > block is

Re: [Discuss-gnuradio] Possibly ways to help contribute

On Sun, Sep 20, 2015 at 8:08 PM, Andy Walls wrote: > > > Hello GNU Radio dev community! I wanted to pass on some information > > for you that might be a good way for you to help contribute to our > > project. Thanks to Pete Mathys during out GRCon15 Hackfest, we now > > have a list of blocks with

Re: [Discuss-gnuradio] Question about correlate_access_code_bb_impl

On Mon, Sep 21, 2015 at 6:40 AM, bob wole wrote: > I am studying the code of correlate_access_code_bb_impl.cc for > understanding its working. I see that the block is derive from "block" > class of gr as written in correlate_access_code_bb_ts.h file > > > class DIGITAL_API correlate_access_code_b

Re: [Discuss-gnuradio] Fwd: Re: Transmission error

I have tried the following commands in the terminal Sender : benchmark_tx.py -f 2.435G -r 250k Receiver : benchmark_rx.py -f 2.435G But the data packets are not being sent correctly. I have been receiving the packets as ok=false. I have tried modifying benchmark python scripts. Can I do the modi

Re: [Discuss-gnuradio] Fwd: Re: Transmission error

Hi Dave, you shouldn't be modifying the python files before you understand what they do exactly. Please revert your edits, because it will be impossible to help you if you don't use the same scripts as we do, obviously. We've talked about this[1]. So: > Sender : benchmark_tx.py -f 2.435G -r 250k

[Discuss-gnuradio] New SDR Student Competition at Virginia Tech

Hey everyone, This came across my desk this weekend. It's a new competition, sponsored by Wireless at Virginia Tech, on spectrum sharing. It's students only, but a chance to work on some cool new ideas in spectrum sharing and wireless coexistence. More details here: http://radiocontest.wireless.

[Discuss-gnuradio] More possible ways to help contribute

Late last week, I provided links to two spreadsheets that I'm using to help us track progress in a couple of areas and invited anyone willing and able to participate. During our monthly developer call, Johnathan Corgan reminded me that we are also looking to move any Python code into C++ (and wrapp

[Discuss-gnuradio] [RFNoC] Updates, Renames, Merges

To all RFNoC fans, we just pushed a big update to the rfnoc-devel branch. Most importantly, this pulls in all recent UHD features; rfnoc-devel thus has all the goodies in our current master branch plus all the RFNoC extensions. *Software Changes* If you 'git pull' rfnoc-devel, you'll see a huge

Re: [Discuss-gnuradio] Gnuradio ASK/OOK Binary sequence

Thanks, I've already red those pdf's. The adsb grc doesn't help me enough :) I'm getting large binary files with 0's and 1's which doesn't resemble the binary sequence I'm looking for... On 2015-09-20 22:33, Chris Kuethe wrote: Check out gr-adsb (https://github.com/wnagele/gr-adsb/tree/mast

Re: [Discuss-gnuradio] Gnuradio ASK/OOK Binary sequence

Well, if you want a basically working "cheat sheet", I already wrote a Gnuradio receiver for those keyfob transmitters: https://github.com/bistromath/keyfob It hasn't been updated in years, so it's still on the old Automake system. It won't compile, but the source should get you started. --n On

Re: [Discuss-gnuradio] Soundcards / alsa block / sample rates

Hi Tom,   > I'm not sure that I understand. What "alsa block"? Are you talking about the audio source/sink blocks? And I'm assuming you mean inside GRC?   Yes, sorry, I mean the audio sink block which talks to the alsa system.   >The sample rate of this blocks is a combo box that is editable, whi

Re: [Discuss-gnuradio] Soundcards / alsa block / sample rates

What device string are you using? On 21.09.2015 22:32, Andreas Ladanyi wrote: > Hi Tom, > > > I'm not sure that I understand. What "alsa block"? Are you talking > about the audio source/sink blocks? And I'm assuming you mean inside GRC? > > Yes, sorry, I mean the audio sink block which talks t

Re: [Discuss-gnuradio] Fwd: Re: Transmission error

Hi, As advised, the problem has been solved to a little extent where I have got the below results by giving the commands as Sender : ./benchmark_tx.py -f 2.435G --tx-gain=25 Receiver: ./benchmark_rx.py -f 2.435G --rx-gain 50 ok: True pktno: 1971 n_rcvd: 1687 n_right: 358 ok: False

[Discuss-gnuradio] AGC_FF Code Implementation

Hello all, I would like to see how agc_ff is implemented, but there is some gnuradio magic going on that's beyond me. The agc_ff_impl.cc in analog/lib doesn't do anything but call scaleN. How do I find the actual implementation code for this block? I see a kernel::agc_ff(paramters) call in the ini

[Discuss-gnuradio] GNU Radio installation script

All, I recently asked the list some questions about getting GNU Radio up and running on a Windows machine (using cygwin). It became obvious there would be a lot of hurdles, for which the community would not be able to offer much help. So... I have installed Ubuntu on a PC ( in a dual boot configur

Re: [Discuss-gnuradio] GNU Radio installation script

On 09/21/2015 11:13 PM, Mike Gilmer wrote: All, I recently asked the list some questions about getting GNU Radio up and running on a Windows machine (using cygwin). It became obvious there would be a lot of hurdles, for which the community would not be able to offer much help. So... I have insta

Re: [Discuss-gnuradio] GNU Radio installation script

Hi Mike, Did you update your package manager? Usually helps when I get errors. sudo apt-get update && sudo apt-get upgrade Also, make sure build-essential is installed (Do this after update and upgrade). sudo apt-get install build-essential -Trip On Mon, Sep 21, 2015 at 11:13 PM, Mike Gilmer

Re: [Discuss-gnuradio] GNU Radio installation script

I'm running 14.04 and yes I have Internet access (that was part of the aforementioned "drama") I ran the update/upgrade and reran the script and now things are "different" This seems like it may take a while. I'll report back when it's done. Hmm.. so far one error - it couldn't find libzmq1-dev;

Re: [Discuss-gnuradio] Question about correlate_access_code_bb_impl

On Mon, Sep 21, 2015 at 7:38 PM, Tom Rondeau wrote: > On Mon, Sep 21, 2015 at 6:40 AM, bob wole wrote: > >> I am studying the code of correlate_access_code_bb_impl.cc for >> understanding its working. I see that the block is derive from "block" >> class of gr as written in correlate_access_code_

Re: [Discuss-gnuradio] On the convolutional code performance of gr-ieee802-11

Thanks for your answers, Ron and Marcus. I posted this question since my module is using both Reed Solomon ( https://github.com/pjkundert/ezpwd-reed-solomon) and Convolutional Code (IT++). And I saw that CC is extremely slower than RS. Thus, I posted this question, but I made a question too short