On Mon, Apr 15, 2013 at 8:34 AM, Bastian Bloessl <bastian.bloe...@uibk.ac.at > wrote:
> Hi all, > > I played a bit around with the 802.15.4 blocks [1]. Maybe someone is > interested. > > The changes are: > - It has a transceiver flow graph. (That was really easy with the new PDU > to tagged stream block) > - annotate LQI value in dict of PDUs > - CRC check > - Wireshark Connector. You can write received packets in a pcap file, that > can be read by Wireshark, which has 802.15.4 dissectors. > - and the coolest thing: the whole encoding is now done with standard GNU > Radio blocks. This includes pulse shaping and the byte to chunk to chip to > symbol mapping. It's really cool what you can do with plain GNU Radio. > I echo what Martin said - this is spectacular work. In fact, I think this would be great to have as part of the Signal Processing discussion page on the wiki: http://gnuradio.org/redmine/projects/gnuradio/wiki/SignalProcessing I think it would be great for the community to get a rundown of the entire standard itself, modulation/demodulation within GNU Radio, how you handled frequency/sampling offsets, etc. I know it's a lot of work, so if you wanted some help making the sub pages or getting the information up on the wiki, I'd be glad to take a look over the source if you provide some input on where to start and your general approaches. > > I tested interoperability it with TelosB motes. I guess it compiles only > on Linux due to the gettimeofday(?) call. > Maybe I messed up my installation as I tried the next branch and didn't > uninstall it cleanly. Now some block names are appended with '(old)'. I > hope the flow graphs work nevertheless. > > Have fun, > Bastian > > [1] > https://github.com/bastibl/gr-**ieee802-15-4<https://github.com/bastibl/gr-ieee802-15-4> > > Brian
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