Re:Starlink internet is going from rural savior to unreliabl...
by mlyle on Monday April 03, 2023 @11:12AM
(#35425026)
> so they're abiding by direct spectral mask limits
Yes, obtained by channelization and OFDM, not by limiting modulation.
Reverse engineering of the 10 to 12.7GHz band has shown a mixture of 16-QAM and 64-QAM frames. There's a bit of periodic 4-QAM too, which seems to be for acquisition and synchronization.
Yes, obtained by channelization and OFDM, not by limiting modulation.
Reverse engineering of the 10 to 12.7GHz band has shown a mixture of 16-QAM and 64-QAM frames. There's a bit of periodic 4-QAM too, which seems to be for acquisition and synchronization.
Even 16-QAM can climb basically to 5 bits/Hz.