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Colby Boyer wrote:
> What changes did you have to make to the sample/baud rate?
>
> How high is high SNR? 10dB? 15dB?
>
> I can only establish communication within simulation. When I try to
> transmit stuff over the air, it fails.
>
I was transmitting with a USB WiFi dongle about 3 feet away and getting
successful packet decoding with some initial success (I've been putting
off getting back to that part of my project, so I don't have much useful
information about measured SNR, etc.) and I was occasionally picking up
packets from another laptop in the same room. As I understand it that's
about the same performance that the original code did with the USRP1 -
so we ought to be able to better.
For the samples/baud, it depends on the decimation rate: but since
802.11 uses a 1Mbaud/s symbol rate before spreading (either DBPSK for
1Mbps, or DQPSK for 2Mbps), at -d 4 that ends up being 25 symbols/baud,
20 sym/baud at -d 5, etc.
Doug
- --
Doug Geiger
Research Assistant
Communications and Signal Processing Lab
Oklahoma State University
address@hidden
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