3 ms·

Or everything they’re broadcasting is encrypted, even the metadata and framing bits. With spread-spectrum, directional and burst patterns to mitigate side chann

Or everything they’re broadcasting is encrypted, even the metadata and framing bits. With spread-spectrum, directional and burst patterns to mitigate side channels and jamming. So the alien communications just look like noise to us here on earth. We’re nearing the “everything encrypted” point ourselves, and we would certainly be very careful about emissions control if we ever got ourselves out of the solar system. Presumably any other advanced civilization would have had its own paranoid Sci-Fi literature/film/whatever, and would behave accordingly.

sigstoat 9y ago
> With spread-spectrum, directional and burst patterns to mitigate side channels and jamming. without regulatory constraints, our own use of radio would've required that rather quickly. i think it's entirely possible another civilization simply never would've used radio at beyond a hobbyist level without the use of spread-spectrum heavily-coded techniques. > Presumably any other advanced civilization would have had its own paranoid Sci-Fi literature/film/whatever i don't think it's a given that another species would even have fiction. or paranoia.