For transmitting standards-compliant 802.11b frames from the USRP1 you really are constrained by the USB link. I don't know if anyone has tried to implement doing the transmit-side spreading in the USRP1's FPGA, but that is likely the only way you'll get it to transmit anything commercial 802.11 radio's will be able to receive. I have no idea if there's enough room left on the FPGA to implement that, but if you're comfortable with Verilog, it's worth a shot.
For using the 3.2 release with the BBN code, you can use my branch on CGRAN: https://www.cgran.org/browser/projects/bbn_80211/branches/douggeiger It should build with current trunk, and 3.2 branches of GNURadio. Doug On Wed, Jun 24, 2009 at 11:54 AM, Phillip Walsh <[email protected]> wrote: > Hi all, > > I am working on a project where I am trying to have the USRP1 transmit and > receive 802.11 management and control frames to/from commercial 802.11b > hardware. I have the receive functionality working fine using BBN 802.11and > the SPAN receiver on GNU Radio 3.1.1. I see there is a lot of work being > done updating BBN to work on GNU Radio 3.2 for the USRP2. My question is has > anyone been able to successfully transmit DBPSK DSSS (Barker chipping and > all) using the USRP1? > > Due to the bandwidth limitations imposed by USB2.0, is the best plan of > attack to move the spreading down to the FPGA similar to what U. of U SPAN > did with the receiver? > > Also, I have the current trunk of GNU Radio 3.2 on another boot of Ubuntu > so I am not stuck on working with the antiquated version if someone has BBN > working on it with the USRP1. > > Regards, > > Phil Walsh > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > http://lists.gnu.org/mailman/listinfo/discuss-gnuradio > -- Doug Geiger [email protected]
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