I not so sure about the wireless, but I know there are USB over Ethernet solutions being used.
It
may be possible, i not a big wireless fan but i assume that if the protocols on the network are the same the physical (or lack thereof) media won't matter, again I not 100% sure, a buddy of mine real into the wireless thing so I'll ask.
but for now do some research on USB over Ethernet,
here is something to get your mind ah tinkering.
EDIT:
Taken from above link
It intercepts USB port activity for the shared device and redirects it via TCP/IP to a remote site, where it is handled appropriate.
Well look at that I was close, so I'd say now, yes, it looks possible.