Lots of BS thrown around in here:
Higher frequency needs more advanced modulation
Um why? Other than there is a LOT more room up at 60ghz so they don't need to be as careful. FM is still FM, and QPSK is still the same.
Fire up a spectrum analyzer on any wireless video in the 2.4 Ghz spectrum to see what it does. It rapes then entire spectrum.
No reason why it shouldn't the ISM band is damn big even at 2.4ghz. A typical TV signal is 6mhz - the ISM band at 2.4ghz is 50mhz wide, or 8 TV channels worth. Unlicensed use is unlicensed use. Why not be a hog?
At 60ghz (actually 61.25ghz) - its 5ghz wide!!!! It's nearly as wide as all utilized spectrum today.
I'm sure there will still be different channels like current wifi does, to keep different access points and devices from interfering with each other.
Current 802.11b/g wireless does that by choice. It's the ISM band. You can do pretty much whatever you want as long as your ERP remains below the limit. I on the other hand hold an FCC license for use in the lower portion of the ISM band, and am a primary user of that band, thus my 1500W magnetron waveguide trounces your 802.11 (until you switch to channel 10+.) Then I die quickly from the cancer or the melted brain.
Lets see - 1gbit over copper needs like 350mhz. Multiply by 7 and you are at 2.1ghz or so.
Looks like the 5ghz of ISM band available around 61.25 ghz is large enough for full duplex 7gbit. Thats enough for UNCOMPRESSED full HD.