On 04/16/2011 06:17 AM, Charles P. Steinmetz wrote:
Magnus wrote:
But have you gone SFN? That would compact the frequency needs such
that LTE style broadband could be done in UHF instead of breaking up
the GPS signal.
See above -- the FCC already intends to repurpose the UHF TV spectrum
for wireless. I predict that the US will not go for distributed SFN --
it will instead put several broadcasters' digital streams onto one
existing transmitter/channel. So (for example), instead of there being
10 channels (10 transmitters) used to distribute 10 digital payloads in
a given market as at present, the same 10 digital payloads (just a wee
bit more heavily compressed ;-) will be distributed on only 3 channels
using 3 of the existing transmitters. What now uses 60 MHz of spectrum
would then use 18 MHz.
Oh... so you haven't done that one yeat.... OK, I see the big mess.
Over here we have DVB-T and DVB-T2 is comming and SFN is common. The
broadcaster then create muxes with the various streams and it is all
fairly well planned. At the same time spectrum is being freed for mobile
networks.
Sounds like this is a more coordinated approach. They did however mess
up the spectrum for hand mikes... but ah well.
Cheers,
Magnus
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