Hi Guanbo, Thanks for your reply.
I've some good news regarding the FTW OFDM encoder - we were able to decode 802.11 a/g packets using kismet/wireshark later in the day. It seems that we'll have to set the OFDM coderegime option as 6 or 7 or 8 (I'm not sure about 8 but 6 definitely worked). The version information of our test system is same as that as what is used here - https://www.cgran.org/wiki/ftw80211ofdmtx but our USRP2 HW revision number is different and we used the latest firmware. Regarding BBN USRP2Version - I'll try that and get back to you in case I face any difficulties. Thanks, Ashu On 21 February 2011 00:07, Guanbo ZHENG <gbzhen...@gmail.com> wrote: > Regarding to BBN, you may try to the high interpolation and decimation > rate, as well as proper gain. I was able to decode it on RX (Ubuntu > 9.10+gnuradio 3.2.2) > > For FTW OFDM code, I was able to decode the 802.11g packet as well at > Wireshark using an Atheros 802.11a/b/g NIC in monitor mode, where I have > saved the TCPdump file. But recently I tried to re-conduct the experiment, I > can not get it anymore. :( > I am still trying to figure out what problem there is. > > Guanbo > > On Sun, Feb 20, 2011 at 3:13 PM, Sankalp Nimbhorkar < > sankalp.nimbhor...@gmail.com> wrote: > >> Dear All, >> We tried using this encoder to transmit frames with USRP2 XCVR >> 2450 daughter-card on Ubuntu 9.10. We confirmed transmission with a WiSpy >> dongle. But we cannot receive the frames on a receiver. The receiver we are >> using is an Atheros 802.11 a/b/g NIC in monitor mode with Mad WiFi driver. >> We have tried almost all the channels in 802.11a and 802.11g, but could not >> receive a single packet on receiver. In the project description we came to >> know that 802.11a frames were successfully received with a Ralinc NIC. Has >> anyone tried out this project? If so, please tell us the procedure to >> receive these frames with an NIC? Or at least some way to confirm that the >> frame was actually received by the NIC? (We even tried Kismet configured to >> report frames even if CRC check fails). Any help would be appreciated. >> >> Thank you. >> Sankalp Nimbhorkar >> CSC Graduate Student >> North Carolina State University >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> http://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > > > -- > Regards, > Brian > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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