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How do you avoid interference between devices? Is this meant for receiver-only, or bidirectional transfer? (he says bidirectional in the ted talk, but only tal
by Afton 15y ago
How do you avoid interference between devices?
Is this meant for receiver-only, or bidirectional transfer? (he says bidirectional in the ted talk, but only talks about phones using their cameras to receive).
Seems a little like a technology in search of a problem.
- noamsml 15y agoYou could always use radio waves for the upload band. That way, it will still increase both download and upload speeds (uploads will can have a wider band now that they don't compete with downloads for the same airspace), it just won't increase upload speeds as much.
- isTravis 15y agoThis is the right idea for sure. Data usage is almost always asymmetric - people download much more than they upload. So let's widen the download channel using visible light and still use the sufficiently large RF channel for the up stream.
- lgeek 15y agoYou avoid interference in the same way you avoid it for radio wave communication: multiplexing. It could be time-based (time slots for each sender), frequency-based (different colors) or code-based (look up CDMA). Plus, you already have 'spatial multiplexing' because light doesn't pass through walls as opposed to RF.
- Geee 15y agoIt's OFDM based transmission so OFDMA would be trivial to implement on this. Like on Wi-fi.