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
