Re: [Discuss-gnuradio] FTW IEEE802.11a/g/p OFDM Frame Encoder

[Manav Seth]

I have tried this and I was able to receive frames using an Atheros NIC in monitor mode.Specifically the card was a AR5413 Atheros card.

Did you check that the receiver NIC is on the same channel as the transmitter? The script given on the FTW page is using channel 1.

Thanks,

Manav

On Sun, Feb 20, 2011 at 10:07 PM, Guanbo ZHENG <address@hidden> 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 <address@hidden> 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

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Regards,
Brian

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