Several years ago I designed a system that transmits audio and data over
IR. The audio is transmitted as frequency modulated RF over IR. The data
is transmitted is frequency shift keyed RF over IR. I've been thinking
about direct digital modulation of the IR. The IR LEDs would be pulsed.
The bit rate to carry the audio and digital would need to be in the area
of 5 Mbps. Does anyone have experience, thoughts, or references on this?
The IR is transmitted in a large room (movie theater auditorium). I'm
concerned about reflections causing intersymbol interference. What do
people think would be a good method of encoding the data (async, biphase,
etc.)? Are such systems existing? Are there any chip sets?

Thanks!

Harold


--=20
FCC Rules Updated Daily at http://www.hallikainen.com
Not sent from an iPhone.
--=20
http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive
View/change your membership options at
http://mailman.mit.edu/mailman/listinfo/piclist
.