[Discuss-gnuradio] 802.16 jammer with USRP/GnuRadio?

[Marcus Leech]

Here's an unusual request.

I'm discussing 802.16 (WiMaX) jamming resistance with some of my colleagues.
 Since I do security for a living, I like to think about these things.  
I don't see
 anything in the specs that would immediately render a jammer an 
impractical
 project for an poorly-funded adversary.

But maybe there's something about OFDM-256 that I don't "grok" that's 
making me
 think building a jammer with USRP/GnuRadio-level technology would be 
straightforward.

Anyone on this list with an opinion?

Near as I can tell, OFDM isn't like conventional DSSS or FH 
technology--it's rather like
 what Telebit used to do on phone lines to produce high data rate 
reliable modems.  In DSSS,
 provided the spreading code is "secret", jamming is a costly 
proposition to someone who
 doesn't have the spreading code.