Re: [Discuss-gnuradio] USRP Basics questions
Hello, Does anyone has some discription about the two programs usrp_fft.py and usrp_oscope.py? I try to search in the archive but didn't find any basic discriptions. For example, I'm using digital-bert benchmark_tx.py to transmit a sequence of 1's, which modulated by BPSK; on the other computer, I use python usrp_fft.py -f 900M -T B -R TX/RX -d 32 to display the output. I've some signals at the center frequency, but I don't know whether it is the signals at the transmitter side usrp or signals received in the other usrp? Similar question to usrp_oscope.py as well, and I also wonder what do the two lines mean, the red one and the blue one? Thanks in advance. Your help is highly appreciated. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] basic questions about usrp_fft.py and usrp_oscope
Hi, Does anyone has some discription about the two programs usrp_fft.py and usrp_oscope.py? I try to search in the archive but didn't find any basic discriptions. For example, I'm using digital-bert benchmark_tx.py to transmit a sequence of 1's, which modulated by BPSK; on the other computer, I use python usrp_fft.py -f 900M -T B -R TX/RX -d 32 to display the output. I've some signals at the center frequency, but I don't know whether it is the signals at the transmitter side usrp or signals received in the other usrp? Similar question to usrp_oscope.py as well, and I also wonder what do the two lines mean, the red one and the blue one? Thanks in advance. Your help is highly appreciated. -- Best wishes, Y ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] benchmark_rx.py in Digital-bert
Hi, dear all, I was trying to using the benchmark_rx.py in the digital-bert file to receive a BPSK modulated signal from another USRP using benchmark_tx.py, the problem is that even I did not run the benchmark_tx.py, I am still receiving sth with benchmark_rx.py, could anyone explain this to me? or do I have to modify some codes in benchmark_rx.py? I'm using center frequency of 900 M. Thanks a lot! -- Best wishes, Yufeng ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] questions in benchmark_tx
Dear all, I'd like to transmit some data with random 0s and 1s using benchmark_tx.py, can someone tell me that how can I generate such kind of data in benchmark_tx.py for transmission? and what if I want to specify a file to transmit, how to modify the code 'source_file = open(options.from_file, 'r')'? I am trying to use 'qam8' for modulation. My another question is how benchmark_tx.py file decide the bandwidth? Since there is no input for us to specify the bandwidth, except for the center frequency. I wonder is the bandwidth decided by the bit_rate that we input? I'm confused about that. Your answers are appreciated. Thanks in advance! -- Best wishes, Y ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] generate 0s and 1s
Hi, all, Can anyone tell me which function in Python could I use to generate a fixed length of 0s and 1s? I know in matlab we could just use randsrc(x, y, 0:1), while I've no idea how to implement it in Python. Thanks for ur help! ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] how to generate a periodic pulse
Hey, Bruhtesfa, This is Yufeng. I have a more simpler question on Python, do you know which codes can I use to generate a fixed length of random 0 and 1s, and how to modulate them in PSK, do you have any idea about this? Thanks! On Mon, Feb 9, 2009 at 5:11 AM, Bruhtesfa Ebrahim wrote: > Hey all, > > I want to generate a periodic rectangular pulse(of low duty cycle) from > one USRP and receive it using another USRP operating simultaneously. > > So, is there some built in function to generate such a pulse? > Also,what filter do i need to apply before connecting the pulse source > to Usrp sink? > > Thanks! > > Bruhtesfa > -- > Posted via http://www.ruby-forum.com/. > > > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- Best wishes, Yufeng ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Gmsk_demod()
Hello, everyone, We've just got two USRPs in our lab and we want to start using them to do some demodulation. I'd like to use one of them to transmit the sum of two (uncoded) signals, useful and interference, with possible relative scaling to simulate different channels. At the receiver side, I wanna then implement different demodulators, like treating interference as noise or successive demodulation (demodulate interference, cancel and demodulate user). Is there any reference I could take a look on how to implement this in USRP? Many thanks! -- Best wishes, Yufeng ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] problem with rx_voice.py
Hi, Recently I was performing the voice transmission between two USRPs. On the transmitter side, with tx_voice.py, it can be seen that data was transmitting, while on receiver side, with rx_voice.py, the data was NOT received. The parameters I set as following: ./tx_voice.py -M 1.0 -I /dev/dsp -f 900M ./rx_voice.py -O /dev/dsp -f 900M Does anyone know how to make the receiver work? Thanks! -- Best wishes, Yufeng ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
[Discuss-gnuradio] exploring the GNURadio and USRP with benchmark.py
Hi, dear all, I've just installed GNURadio and Cygwin in two computers, now I'd like to explore them with the experiment using benchmark_rx.py and benchmark_tx.py. I tried to type benchmark_rx.py -f 900M in one computer, but I got 'usb_contral_msg failed' and a warning 'Failed to enable realtime scheduling' Could anyone here tell me are there some other parameters or codes needed to be set first in the file benchmark_rx.py or some other files, in order to perform the data transmission experiment between two computers in Cygwin? Thanks a lot! -- Best Yufeng ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP working but problem with cygwin
Hi, Don, Many thanks for you reply! I've installed gcc, my problem now is that 'make: command not found', do you have any idea on how to solve this? On Tue, Nov 4, 2008 at 8:18 AM, Don Ward <[EMAIL PROTECTED]> wrote: > yufeng wang wrote: > >> I also just started to install cygwin. My first problem occurs when I >> tried to install fftw-3.1.3 package, after './configure --enable...', >> it says 'no acceptable c compiler found in path', thus I can't >> continue with the next step. Anyone has similar problems? How did u >> solve this? > > In your Cygwin shell, try the command "echo $PATH". Does the result include > "/usr/bin"? If not, there is a problem with the way you are running Cygwin. > > Now try the command "which gcc". Does it say "/usr/bin/gcc"? If not, gcc > is not installed correctly. > > The command "cygcheck -c" will show you what Cygwin packages are installed. > You should see entries for gcc-core and gcc-g++. > > -- Don W. > > -- Best, Yufeng ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] USRP working but problem with cygwin
Hi, Dear all, I also just started to install cygwin. My first problem occurs when I tried to install fftw-3.1.3 package, after './configure --enable...', it says 'no acceptable c compiler found in path', thus I can't continue with the next step. Anyone has similar problems? How did u solve this? Thanks in advance! On Mon, Nov 3, 2008 at 10:16 PM, Don Ward <[EMAIL PROTECTED]> wrote: > teka yemane wrote: > >> Finally, my USRP and gnuradio are working fine. >> now, i am having bad time with installing cygwin >> as my clients need the application in windows. Has >> any body used cygwin for gnuradio before or is it better >> to use MingW? please any body who has got some experience >> on this, send me some advice. > > I have been using GNU Radio on both. Instructions for installation are > given in the wiki (www.gnuradio.org/trac/wiki/WindowsInstall) . The > instructions have been tested for release 3.1.3 but will not always work for > the svn trunk (because the code changes faster than the wiki). There could > also be problems with changes in Cygwin components or in the libraries that > GNU Radio depends on. > > I think Cygwin is a little easier to start with, though MinGW doesn't change > as fast. > > If you can be specific about the difficulties you are having, someone may be > able to help. > > -- Don W. > > > > ___ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- Kind regards, Yufeng Wang Ph.D Candidate Dept. of Electrical & Computer Engineering, New Jersey Institute of Tech., NJ, USA Tel: +1 201 314 2005 ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
