Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!zaphod.mps.ohio-state.edu!pacific.mps.ohio-state.edu!linac!unixhub!stanford.edu!siegman@sierra
From: siegman@sierra.STANFORD.EDU (Anthony E. Siegman)
Newsgroups: sci.electronics
Subject: Re: Data xfer UNDERWATER !
Message-ID: <24@sierra.STANFORD.EDU>
Date: 27 Mar 91 02:06:11 GMT
References: <3526@lamont.ldgo.columbia.edu>
Organization: Stanford University
Lines: 13

For low enough data rates and enough scattering objects around you
might be able to do it optically, i.e.  with modulated LEDs or laser
diodes and photodetectors.

I believe there are wireless LANs for use in offices in which the IR
transmitters just spray light at the ceiling and let it scatter to
receivers randomly located around the room.

Might also do a bistatic version, i. e. simplified low-power units at
the two sources, a more sensitive and powerful receive-and-retransmit
relay unit in between.

--AES