Hi there, I made some decent progress but refining the parameters for the benchmark_tx.py and benchmark_rx.py without no errors. However, I can only transmit but I could not receive anything at the receiver side. Could somebody suggest what might be the problem? I tried to work it but still could not find answer on why I did not received anything.
Used code: ./benchmark_tx.py -f 400M -r 250k -S 4 and ./benchmark_rx.py -f 400M -r 250k -S 4 OS: Ubuntu 11.10 (which I read in blog said that it has some problem with gnuradio) Gnuradio: 3.5.0 rc 0 (which I git from master branch) Hardware: USRP1(transmitter), USRP N210(receiver) Machine: Lenovo T510 (transmitter), Dell Desktop Regards, Muhammad On Thu, Dec 8, 2011 at 11:09 AM, Muhammad Rosli <[email protected]>wrote: > Hi, > > I am using: > OS: Ubuntu 11.10 (which I read in blog said that it has some problem with > gnuradio) > Gnuradio: 3.5.0 rc 0 (which I git from master branch) > > I quite puzzled it's not working with my current setup. It seems doable by > many people but not me. > > > Regards, > Muhammad b Rosli > Student > Bachelor of Electrical and Electronic > University of Canterbury > > > On Wed, Dec 7, 2011 at 12:14 PM, Tom Rondeau <[email protected]>wrote: > >> On Thu, Dec 1, 2011 at 10:15 PM, Muhammad Rosli <[email protected]>wrote: >> >>> Hi, >>> >>> Thanks for your reply. I am using the narrowband example. >>> >>> If I attempt using >>> >>> ./benchmark_tx.py -f 400M -r 250k -S 4 >>> >>> and >>> >>> ./benchmark_rx.py -f 400M -r 250k -S 4 >>> >>> which I worked out from reading the README file, the receiver still >>> output overrun (many '0'). I verified that the transmitter working since my >>> spectrum analyser can pickup the signal from the transmitter. >>> >>> >>> -- >>> Regards, >>> Muhammad b Rosli >>> Student >>> Bachelor of Electrical and Electronic >>> University of Canterbury >>> >> >> >> What is your OS, version of GNU Radio, hardware? >> >> By default, the digital benchmarks run GMSK, so that with 250 kbps rate >> should be easily doable without overruns on most modern machines. >> >> Tom >> >> >> >>> >>> On Fri, Dec 2, 2011 at 3:56 PM, Marcus D. Leech <[email protected]>wrote: >>> >>>> ** >>>> On 12/01/2011 09:36 PM, Muhammad Rosli wrote: >>>> >>>> Hi, >>>> >>>> Thanks for reading my mail. I would like to ask is there any additional >>>> setup or configuration required to execute benchmark_tx.py and >>>> benchmark_rx.py? >>>> >>>> My problem is I tried to initiate simple communication between two >>>> USRP1 using benchmark_rx.py and benchmark_tx.py . I had browse through the >>>> mailing list looking on how to use the file appropriately. Running >>>> benchmark_tx.py also execute help which I follow closely but failed to >>>> receive any packets. If I tried to execute at transmitter: >>>> >>>> benchmark_tx.py -f 400M -S 10 >>>> >>>> and at receiver >>>> >>>> benchmark_rx.py -f 400M -S 10 >>>> >>>> I did not received packet status. I only received '0' in the terminal. >>>> Is it correspond to error? >>>> >>>> I also read mailing list sent by other members but none mentioned about >>>> not able to execute benchmark_tx.py . If I missed any post, could anyone >>>> please provide me the link. >>>> >>>> For additional information: >>>> Gnuradio version used: v3.5.0rc0 >>>> USRP1 : revision 4 >>>> Ubuntu: 11.10 >>>> Daugtherboard: SBX >>>> >>>> Please let me know if I had to provide any additional information. >>>> >>>> -- >>>> Regards, >>>> Muhammad b Rosli >>>> Student >>>> Bachelor of Electrical and Electronic >>>> University of Canterbury >>>> >>>> You're asking for 10 samples per symbol, which may exceed the rate at >>>> which your receiver computer can keep up, depending on >>>> the modulation used, and the complexity of the modulation >>>> techniques. Are you using the narrowband or ofdm examples? >>>> >>>> The 'O' means overrun. The hardware (USRP1) is sending samples faster >>>> than your computer can keep up. >>>> >>>> >>>> >>>> >>>> -- >>>> Marcus Leech >>>> Principal Investigator >>>> Shirleys Bay Radio Astronomy Consortiumhttp://www.sbrac.org >>>> >>>> >>>> _______________________________________________ >>>> Discuss-gnuradio mailing list >>>> [email protected] >>>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>>> >>>> >>> >>> >>> >>> >>> >>> _______________________________________________ >>> Discuss-gnuradio mailing list >>> [email protected] >>> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >>> >>> >> > > > -- > Regards, > Muhammad b Rosli > Student > Bachelor of Electrical and Electronic > University of Canterbury > > -- Regards, Muhammad b Rosli Student Bachelor of Electrical and Electronic University of Canterbury
_______________________________________________ Discuss-gnuradio mailing list [email protected] https://lists.gnu.org/mailman/listinfo/discuss-gnuradio
