Try this cd /usr/share/gnuradio/examples/ofdm/ benchmark_ofdm_tx.py -h Don't forget the spaces (just copy & paste should work)
On Sun, Sep 11, 2011 at 7:19 PM, waqasme <waqa...@hotmail.com> wrote: > > hello Johnny, > I tried that locate command and i have found the location of the files > .here > is the output: > hp@ubuntu:~$ cd/usr/local/bin > bash: cd/usr/local/bin: No such file or directory > hp@ubuntu:~$ ls > Desktop Downloads Music Public Templates > Documents examples.desktop Pictures rx file Videos > hp@ubuntu:~$ locate benchmark_ofdm_tx.py > /usr/share/gnuradio/examples/ofdm/benchmark_ofdm_tx.py > /usr/share/gnuradio/examples/ofdm/benchmark_ofdm_tx.pyc > hp@ubuntu:~$ locate benchmark_ofdm_rx.py > /usr/share/gnuradio/examples/ofdm/benchmark_ofdm_rx.py > /usr/share/gnuradio/examples/ofdm/benchmark_ofdm_rx.pyc > hp@ubuntu:~$ benchmark_ofdm_tx.py -h > benchmark_ofdm_tx.py: command not found > hp@ubuntu:~$ benchmark_ofdm_tx.py-h > benchmark_ofdm_tx.py-h: command not found > hp@ubuntu:~$ cd benchmark_ofdm_tx.py-h > bash: cd: benchmark_ofdm_tx.py-h: No such file or directory > > I have used locate comand to find the benchmark files. its in > /usr/share... > /usr/share/gnuradio/examples/ofdm/benchmark_ofdm_tx.py > /usr/share/gnuradio/examples/ofdm/benchmark_ofdm_tx.pyc > Now as in my previous discussion with sumit, he mentioned after that type > these comands to show the paramaters > benchmark_ofdm_tx.py-h but it says comand not found. > Am i missing something here in the command line? Please advise for further > process.. > Thanks.. > Waq. > > > Tuan Ta-2 wrote: > > > > You seem to be quite new to Linux, what do you intend to do for your > > Master > > thesis? Gnuradio is not something you can master in a couple of months. > > > > To go to a directory, you need to use the 'cd' command. Ie > > cd /usr/local/bin > > > > My benchmark_ofdm code is not in /usr/local/bin so when you get to that > > folder, do a 'ls' to see if the code is there. If not, you can run > > locate benchmark_ofdm_tx.py > > > > The results will show you where the file is in your system. > > > > Good luck, > > Johnny > > > > On Sun, Sep 11, 2011 at 5:55 PM, waqasme <waqa...@hotmail.com> wrote: > > > >> > >> Hi Sumit, > >> Thanks you so much for ur detailed explanation . i really appriciate > your > >> help. > >> I am following the same steps as you mentioned earlier but iam getiing > >> this > >> message when i am entering these comands in terminal. here is the > >> messages > >> . > >> > >> hp@ubuntu:~$ /usr/local/bin > >> bash: /usr/local/bin: is a directory > >> hp@ubuntu:~$ directory/usr/local/bin > >> bash: directory/usr/local/bin: No such file or directory > >> hp@ubuntu:~$ /usr/local/bin > >> bash: /usr/local/bin: is a directory > >> hp@ubuntu:~$ benchmark_ofdm_tx.py-h > >> benchmark_ofdm_tx.py-h: command not found > >> > >> when i enter this comand i get this result > >> hp@ubuntu:~$ directory/usr/local/bin > >> bash: directory/usr/local/bin: No such file or directory > >> hp@ubuntu:~$ > >> No such file or directory. how to access that directory? do i need to > >> run > >> some other commands before that ? > >> what could be the problem ? any suggestion ? > >> > >> > >> sumitstop wrote: > >> > > >> > go to the directory /usr/local/bin > >> > there u will find benchmark files for ofdm (both transmission and > >> > reception) > >> > u need to type benchmark_ofdm_rx.py -h > >> > and benchmark_ofdm_tx.py -h > >> > > >> > these will show you the parameters u can play with. > >> > > >> > after that u can run these files by typing ./benchmark_ofdm_tx.py -f > >> > <frequency appropriate to ur daughter board> > >> > and ./benchmark_ofdm_rx.py -f <frequency appropriate to ur daughter > >> board> > >> > > >> > also there may be drift in the center frequency of the daughter board > >> so > >> u > >> > can do one thing. first run the transmitter part and see on the > >> spectrum > >> > analyzer for the center frequency of the ofdm signal. > >> > > >> > after that run the receiver part with that center frequency specified > >> in > >> > the arguments. > >> > now run the transmitter again with the same frequency. > >> > > >> > if u get timeouts then u need to play with the receiver gain and > >> > transmitter amplitude as well as the receiver center frequency. > >> > > >> > u can change the bandwidth of the ofdm signal by changing the no of > >> > occupied tones or fft length because bw = occupied tones/ fft length > >> > > >> > let me know ur results. > >> > > >> > Regards > >> > > >> > waqasme wrote: > >> >> > >> >> hello sumit, > >> >> yah i have replaced the GMSK modulator and demodulator with OFDM > >> >> modulator and demaodulator. but i coudlnot find message source , > >> ,message > >> >> sink, probe signal and probe avg mag 2 with only input .. the one i > >> have > >> >> found has input and output as well for probe avg mag 2 block... i > >> >> couldnot able to find these blocks as in the simple tranceiver > diagram > >> >> example they used these blocks... can you plesase guide me where to > >> get > >> >> these blocks? > >> >> Also you mentioned this command ( benchmark_ofdm.py -h ) is that a > >> >> command or what? because i have entered this command in terminal > >> window > >> >> but it says command not found? and if i type in google to search it > >> opens > >> >> a c ++ code ..what i am suppose to do with that. ?? please tell me > how > >> to > >> >> use this benchmark_ofdm.py code.. where to put this code to make the > >> >> simulation work. i am very new to GNU radio so i have no idea what > >> >> functions i can play with and how to implement this. please guide me > >> >> like how to make this OFDM tranmission and reception via USRP. iam > >> >> using Linux Ubuntu maveric and GNU Radio companion 3.2.2 version... I > >> >> really appriciate your help because i have only few time left for my > >> >> Masters project. Thanks in advance i am looking forward to hear from > >> you. > >> >> > >> >> Regards, > >> >> Waq. > >> >> > >> >> sumitstop wrote: > >> >>> > >> >>> http://pwnhome.files.wordpress.com/2011/04/simple_transceiver1.png > >> >>> see carefully....... it has a gmsk modulator in the bottom.u can > make > >> >>> the bottom modulator part in another pc > >> >>> > >> >>> benchmark programs are quite good to start with... > >> >>> u can type benchmark_ofdm.py -h to see all the parameters u can play > >> >>> with. > >> >>> > >> >>> > >> >>> waqasme wrote: > >> >>>> > >> >>>> And sorry to mention in the last mail that i will be suing USRP 1 . > >> >>>> > >> >>>> waqasme wrote: > >> >>>>> > >> >>>>> Hi Sumit, > >> >>>>> Thank you so much for your quick response. yah i understand what > >> your > >> >>>>> saying and i am trying to understand this document but it doesnot > >> help > >> >>>>> much . As you mentioned use the same Tranceiver setup and only > >> replace > >> >>>>> OFDM blocks with that. My question is in this basic tranciver > >> diagram > >> >>>>> the used two UHD's source and sink and in the middle they use GMSK > >> >>>>> Demodulator right. but they didnot use any modulator any where in > >> the > >> >>>>> design. Now i am confused what blocks i have to replace with OFDM > >> >>>>> blocks??? Please try to explain in bit detail so i can design it > >> >>>>> properly . > >> >>>>> OR you mentioned other option that use benchmark_OFDM.py file . > >> >>>>> Somebody already told me about this benchmark file. but its just > >> C++ > >> >>>>> code . i am quite new to GNU radio and dont know much about the > >> >>>>> functions how it works. > >> >>>>> Please let me know how to use that benchmark_OFDM.py file in order > >> to > >> >>>>> make the simulation design? do i have to download the file or > what? > >> >>>>> how it works ?? let me know if you know about the process how to > >> >>>>> compile and run that code in GNU radio. > >> >>>>> > >> >>>>> Thanks for ur help and support really appriciate that... > >> >>>>> > >> >>>>> Regards, > >> >>>>> > >> >>>>> Waqas. > >> >>>>> > >> >>>>> > >> >>>>> sumitstop wrote: > >> >>>>>> > >> >>>>>> Try to understand these > >> >>>>>> > >> >>>>>> > >> > http://pwnhome.wordpress.com/2011/04/26/intro-to-gnuradio-and-the-usrp-part-5-simple-transceiver/ > >> >>>>>> > >> >>>>>> here u need to put those ofdm blocks .. thats it.... also go > >> through > >> >>>>>> some modifications as written in umit, > >> >>>>>> > >> >>>>>> > >> >>>>>> > >> > http://pwnhome.wordpress.com/2011/04/19/intro-to-gnuradio-and-the-usrp-part-4/ > >> >>>>>> > >> >>>>>> or else work with benchmark_ofdm.py its very easy.. :) > >> >>>>>> > >> >>>>>> may i know what daughter boards do you have... > >> >>>>>> > >> >>>>>> > >> >>>>>> > >> >>>>>> > >> >>>>>> > >> >>>>>> waqasme wrote: > >> >>>>>>> > >> >>>>>>> > >> >>>>>>> Hello sumit, > >> >>>>>>> Thanks for your help i went through that document that you > >> refered > >> >>>>>>> to, and i tried to implement that OFDM transmitter part. This > >> >>>>>>> document only explain about OFDM flow graph or transmitter. Is > >> there > >> >>>>>>> any other document or information related to OFDM modulator and > >> >>>>>>> demodulator (Transceiver)? i haver to implement OFDM > transmission > >> >>>>>>> and reception via USRP. i will really appriciate if you can help > >> me > >> >>>>>>> that or someone else who knows how to implement by using GNU > >> radio > >> >>>>>>> companion. > >> >>>>>>> Thanks in advance. > >> >>>>>>> Regards, > >> >>>>>>> Waq. > >> >>>>>>> > >> >>>>>>> > >> >>>>>> > >> >>>>>> > >> >>>>> > >> >>>>> > >> >>>> > >> >>>> > >> >>> > >> >>> > >> >> > >> >> > >> > > >> > > >> > >> -- > >> View this message in context: > >> http://old.nabble.com/OFDM-Implementation-tp32380874p32444101.html > >> Sent from the GnuRadio mailing list archive at Nabble.com. > >> > >> > >> _______________________________________________ > >> Discuss-gnuradio mailing list > >> Discuss-gnuradio@gnu.org > >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >> > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > Discuss-gnuradio@gnu.org > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > > > -- > View this message in context: > http://old.nabble.com/OFDM-Implementation-tp32380874p32444388.html > Sent from the GnuRadio mailing list archive at Nabble.com. > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >
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