3 ms·
Almost correct. You typically need 2-4 transmitters to emulate the system. So you modulate one or two channels under test and modulate the rest of the band with
by cycomanic 4y ago
Almost correct. You typically need 2-4 transmitters to emulate the system. So you modulate one or two channels under test and modulate the rest of the band with a single modulator and use some decorrelation tricks to be realistic. Then you scan your channels under test through the whole band. This is in typically a lower bound of performance, i.e. a real system would likely perform better. As you said, using individual transmitters is economically unfeasible even for the best equipped industry labs.
- Dylan16807 4y agoDoes that mean "We experimentally demonstrate transmission of 1.84 Pbit s–1" in the paper abstract is a lie?
- henrikeh 4y agoI worked on this project and cycomanic summarizes the practice well. I’ve written more on it here: https://news.ycombinator.com/item?id=33321506 https://news.ycombinator.com/item?id=33321506
- Dylan16807 4y agoWell, the technology is just as impressive either way, but I think "we experimentally demonstrate transmission of 1.84 Pbit s–1" is misleading. The capacity was demonstrated piecewise but that data rate was not demonstrated.