On Thu, May 20, 2010 at 3:14 PM, Smith L. <kushal.23...@gmail.com> wrote:
> > Thanks for the help, Doug. > > I do have two USRP2s and hence was also working on the usrp2_version code. > I > have both the transmitter and receiver code individually working correctly > with USRP2. However, the receiver is not able to receive the packets > correctly from the transmitter (i.e in case of USRP2). I always get bad CRC > message. > > I have looked up the forum and everybody seem to stuck with the same > problem. Is there any work around to solve this problem? > > From the forum discussion, it seems that one of the issues is the preamble. > > Any idea how to make synchronize the receiver so that it can receive the > packets from USRP2 transmitter using bbn code. > > I struggled with this for quite a while. I never understood exactly where a standard card was not able to decode it. Large frequency offset maybe? I never got a single packet through. Can I suggest something? Try out this 802.11 project: https://www.cgran.org/wiki/ftw80211ofdmtx They definitely claim that a standard NIC can decode the packets, but I never personally got around to trying it. The code seemed pretty clean, and I was able to use it to generate proper packet signatures... so the modulation is definitely correct. - George
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