Electronics > Projects, Designs, and Technical Stuff
IR communication protocol/design for low latency/fast response - ideas?
Marco:
Wavelength division multiplexing is used because the individual bandwidths of the signals are already pushing technology limitations. Modulating a laser with a modulated 1 THz carrier to get 100 10 GHz bands is not technologically possible, with a MHz carrier and 100 10 kHz bands it is.
Now whether frequency division multiplexing is a better way to share the spectrum than time division here is debatable.
pwlps:
--- Quote from: ogden on May 24, 2019, 11:52:01 am ---LOL, no. You suggest to use same carrier frequency - same wavelength of light, same type of IR LED to transmit multiple channels? :-//
--- End quote ---
Of course it is possible to use the same wavelength of light and same type of IR LED to transmit multiple channels. That's what it all was about.
ogden:
--- Quote from: Marco on May 24, 2019, 12:54:19 pm ---Now whether frequency division multiplexing is a better way to share the spectrum than time division here is debatable.
--- End quote ---
Of course time division of pulse-modulated signal is most effective way for said application - because available bandwidth is more than needed.
--- Quote from: pwlps on May 24, 2019, 12:59:21 pm ---Of course it is possible to use the same wavelength of light and same type of IR LED to transmit multiple channels. That's what it all was about.
--- End quote ---
Well, then explain your phase modulation principles of IR LED light which does not allow phase (of the light) modulation. You BTW did not provide quote of OP asking independent communication channels.
Buriedcode:
Lads, the OP hasn't returned, can we at least keep on topic.
ogden:
--- Quote from: Buriedcode on May 24, 2019, 02:04:11 pm ---Lads, the OP hasn't returned, can we at least keep on topic.
--- End quote ---
Are you moderator? Which part of our discussion you find off-topic? We *are* talking about subject "IR communication protocol/design". You think we are not?
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