Re: [Discuss-gnuradio] Update to BBN 802.11b code 2Mbps transmission now supported

[Valerio, Danilo]

Great!

Thanks, and congratulations!
We'll test it on Monday...
We are still working on the Barker implementation.
This week we have been able to transmit (1Mbps) to IEEE802.11b chipsets 
with a modified version of your branch.
We have just changed the way the barker sequence is applied (credits to 
Andrea, he might probably add some details later).

So far, our real 802.11b chipset receives almost everything sent from 
the USRP2, if the packet_length is <100bytes.
Further increases in the packet_length lead to an (almost linear) 
increase of PER.
When packets exceed 500bytes, almost nothing is received.

As soon as we figure out the reason of this, we can send to the list our 
small modifications.

Cheers,
Danilo

Colby Boyer wrote:
> Hi All,
>
> I uploaded my latest code to the SVN. I implemented 2 Mbps (DQPSK) 
> packet transmission and it works in simulation and with the USRP2.  1 
> or 2 Mbps packets can be sent with the send_pkt function by selecting 
> the bit rate.  Please read the send_pkt function in the pkt.py file 
> and the test.py for examples of how to use the new send_pkt 
> interface.  All the code is in the CGRAN server under the 
> usrp2_version branch.  Note that this only works between two USRP2s, 
> not with 802.11b chipsets.
>
> I have made some additional changes to the interface that I have not 
> tested with the USRP2 itself, but it all works in simulation so it 
> should work. One of my co-workers will be able to test it sometime 
> soon as I dont have access to a USRP2.
>
> Cheers,
> Colby Boyer
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