[Discuss-gnuradio] Repack bits & header generator

HI all, I want to ask about the repack bits block http://gnuradio.org/doc/doxygen/classgr_1_1blocks_1_1repack__bits__bb.html - Does it change the rate of the output relative to the input ? - what does it mean it makes an alignment to the output ? - Also I don't understand this part in doxygen "the

Re: [Discuss-gnuradio] RAW source

Activecat : > > > On Thu, Jun 19, 2014 at 9:32 PM, Sara Chérif > wrote: > >> Sorry , I forgot to say that some packets coming from Twinkle are SIP & >> ARP packets not only RTP. >> Hence , I think I need to receive RAW packets in GNU Radio ( as I have >>

Re: [Discuss-gnuradio] guard band

nd zeros instead of repeating the sent packets , How Can I do this ? Thanks in advance. 2014-05-22 17:03 GMT+03:00 Martin Braun : > On 05/22/2014 11:29 AM, Sara Chérif wrote: > > In ofdm transmitter , I want to add 6 subcarriers as a guard band > > between symbols , so that

Re: [Discuss-gnuradio] ofdm parameters

ake, but from looking at your symbols variable I'd say you have a tuple > containing a tuple of tuples of floats, > and what you need would be a > tuple of tuples containing complexes. > > Note that (1,1j) is *not* a complex, but 1+1j is. > > Greetings, > Marcus > > On 21

Re: [Discuss-gnuradio] RAW source

winkle(1st lap) ? Or the UDP source is an interface to socket and So there must exist an external code of socket ? Thanks in advance 2014-06-21 19:43 GMT+03:00 Activecat : > On Sat, Jun 21, 2014 at 7:31 PM, Sara Chérif > wrote: > >> Thanks Marcus Müller , Marcus D. Leech , Activecat

[Discuss-gnuradio] ofdm parameters

Hello , I want to implement ofdm system with these parameters: FFT length=128 Occupied subcarriers=117. 4 pilots 1 DC 6 zeros subcarriers . I put these parameters in ofdm tx & ofdm Rx: Occupied carriers =(range(-58,-42)+range(-41, -14) + range(-13, -7) + range(-6, 0) + range(1, 7) + range(

Re: [Discuss-gnuradio] RAW source

to the cyclic prefixer also I don't know how to use the pad source to insert these zeros & I don't know if there is a block to concatenate between the zeros coming from the pad source & the output of the ifft block . Thanks in advance . 2014-06-20 7:42 GMT+03:00 Activecat : > On T

Re: [Discuss-gnuradio] RAW source

have a loopback audio device, you could > even just use the soft phone of your choice to generate audio samples > that you capture using the GNU Radio audio source. > > Greetings, > Marcus > > On 19.06.2014 14:11, Marcus D. Leech wrote: > > On 06/19/2014 07:54 AM, Sara C

[Discuss-gnuradio] RAW source

Hi, I want to capture packets coming from Twinkle Soft phone in gnuradio, these packet are RTP packets . But in gnuradio , there is only UDP or TCP source ! I can't find Raw source to correspond to the RTP packets. Is there an alternative to RAW source in GNUradio ? Thanks. ___

[Discuss-gnuradio] guard band

In ofdm transmitter , I want to add 6 subcarriers as a guard band between symbols , so that each symbol is fft + cp + guard band .. How to add this guard band ? is there a block which add zeros ? I think I can make guard band included in CP , I can make cp longer by 6 then multiplying symbols by a

[Discuss-gnuradio] Socket PDU

Hello , I have 2 questions, please: 1- If I put a vector source as input or file source & I choose " No repeat" for the input , I find that no output is written in file sink ! why ? 2- I want to receive real time voice packets from an application running on another lap which is connected to the sec

[Discuss-gnuradio] configuration incomplete , errors occur !

I am installing GNU radio using this command wget http://www.sbrac.org/files/build-gnuradio && chmod a+x ./build-gnuradio && ./build-gnuradio --verbose But I found at the end of the installation an error (after 2 hours from beginning of installation during building of extra modules ) Building ext

Re: [Discuss-gnuradio] Testing

uring implementation using USRP. 2014-05-03 5:49 GMT+02:00 Sara Chérif : > I think maybe there is something wrong in installation also , so I am > reinstalling GNURADIO now. > I want to make OFDM system with some requirements on parameters. I don't > know how to start . I think I must st

Re: [Discuss-gnuradio] Testing

Here is the file . I wrote std::cout in the work() , why I don't see the output from this file on terminal after rebuilding ?! #ifdef HAVE_CONFIG_H #include "config.h" #endif #include "frequency_modulator_fc_impl.h" #include #include #include #include namespace gr { namespace analog {

[Discuss-gnuradio] Testing

I am testing some blocks to understand the synchronization in ofdm . I edited c++ files & put std::cout for all variables in frequency_modulator_fc_impl.cc and multiply_cc_impl.cc and then I rebuilt using cmake../ then make then sudo make install . But when I run the python file "./top_block.py"

[Discuss-gnuradio] ofdm_txrx.py

I run the file "ofdm_txrx.py" from terminal using command ./ofdm_txrx.py But I got errors !!! why ? Thanks in advance ! Here is the output on terminal: ./ofdm_txrx_me.py: line 26: OFDM Transmitter / Receiver hier blocks. For simple configurations, no need to connect all the relevant OFDM bloc

[Discuss-gnuradio] continue the Installation

I am installing GNURADIO from this link http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/ I have one Question : If my Laptop shut down suddenly due to overheat

Re: [Discuss-gnuradio] Understanding c++ code

how I can re-build digital library only after making changes in c++ code of a block.. not re-building the whole gnuradio I installed GNU RADIO from this link http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/ 2014-04-13 0:55 GMT+02:00 Sara Chérif

Re: [Discuss-gnuradio] Understanding c++ code

to have a flowgraph containing that block to test your > modified version. > > I think you should start with a basic C++ tutorial before you try to > understand and modify GNU Radio's C++ codebase -- these are very basic > concepts you are missing. > > Greetings, &g

[Discuss-gnuradio] Understanding c++ code

I installed GNU RADIO from this link http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/ I want to test some blocks & see their output to understand them more and more. for example I opened additive_scrambler_bb c++ codes in terminal to understand but I wan

Re: [Discuss-gnuradio] Check The output of a block & input captured frames to GNURadio

hreads()" parser = OptionParser(option_class=eng_option, usage="%prog: [options]") (options, args) = parser.parse_args() tb = top_block() tb.Start(True) print tb.blocks_vector_sink_x_0.data() 2014-03-29 0:06 GMT+02:00 Sara Chérif : > I want to make a test and

[Discuss-gnuradio] Check The output of a block & input captured frames to GNURadio

I want to make a test and see the output , I put 3 blocks , vector source , throttle and vector sink . I edited the "vector" parameter in vector source block to (6,6). All 3 blocks have a type "byte". I generated the flow graph. I moved to the directory of grc file , I wrote in terminal vim top_blo

Re: [Discuss-gnuradio] GIT checkout of Gnu Radio failed!

st-packages in your .bashrc or equivalent file prior to attempting to run any Gnu Radio applications or Gnu Radio Companion. ***** Done function pythonpath at: Fri Mar 28 18:22:33 EET 2014 Done all functions at: Fri Mar 28 18:22:33 EET 2014 Al

Re: [Discuss-gnuradio] GIT checkout of Gnu Radio failed!

ailed! Send success/fail info to sbrac.org?Y 2014-03-27 20:35 GMT+02:00 Tom Rondeau : > On Thu, Mar 27, 2014 at 11:21 AM, Sara Chérif > wrote: > > I am installing GNU Radio from this link : > > > http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64

[Discuss-gnuradio] GIT checkout of Gnu Radio failed!

I am installing GNU Radio from this link : http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/ but I got this output in terminal : "This script will fetch Gnu Radio version 3.7/maint from the repositories, along with compatible extras. Is this OK?Y Fetching

Re: [Discuss-gnuradio] Full-duplex

I have one USRP B100 & the other USRP is B200 2014-03-22 22:01 GMT+02:00 zielalaoui : > Hi sara, > which USRPS do you have? > > > > -- > View this message in context: > http://gnuradio.4.n7.nabble.com/Full-duplex-tp47137p47138.html > Sent from the GnuRadio mailing list archive at Nabble.com. > >

[Discuss-gnuradio] Full-duplex

I want to use 2 Laptops with GNU Radio installed & 2 USRPs , but I want a full duplex OFDM link so each USRP will work as a TX & RX . How to do a Full-duplex traffic ? will I need to make a new block on GNU Radio to be used as a transceiver ? Thanks :)

[Discuss-gnuradio] UHD build apparently failed

As I am installing GNU Radio from this link: http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/ (which installs GNU Radio & UHD ) I got the following error , what can i do ? Thanks :) [ 26%] Building CXX object lib/CMakeFiles/uhd.dir/transport/nirio/rpc/rp

[Discuss-gnuradio] UHD blocks

My friend has installed GNU Radio from this link http://blogs.bu.edu/mhirsch/2012/07/installing-gnu-radio-in-ubuntu-12-04-x64/comment-page-1/ Then when running GNURadio , she found UHD blocks in it . 1- Does this mean that this link has installed GNURadio & UHD on Ubuntu , and that there is no ne

[Discuss-gnuradio] OFDM link simulation

I want to simulate an OFDM link to carry 214 bytes per Ethernet packet & implement it using 2 laptops running GNU & 2 USRPs. Each USRP is a TX & RX .(FULL-DUPLEX) I calculated all OFDM parameters needed. total BW=200KHz sample Rate=240k symbol time including CP=5ms= 8-burst gsm ( one burst is 0.6m

[Discuss-gnuradio] No UHD blocks in GNURadio

I installed GNU on ubuntu 12.04 lts *before* installing UHD from http://gnuradio.org/redmine/projects/gnuradio/wiki/UbuntuInstall by running the following commands: sudo apt-get -y install git-core autoconf automake libtool g++ python-dev swig \ pkg-config libboost1.48-all-dev libfftw3-dev libcpp