[opendtv] Re: Global standard

  • From: "John Shutt" <shuttj@xxxxxxxxx>
  • To: <opendtv@xxxxxxxxxxxxx>
  • Date: Wed, 2 May 2012 06:21:01 -0400

As was advocated by some back in the pre-transition days, (cough*me*cough,) a 
single worldwide transport standard, with agile 6-7-8 MHz receivers, would have 
been an ideal solution.  I was shot down several times over the complexity of 
making agile 6-7-8 MHz RF front ends, until DVB receiver manufacturers started 
doing it.

Were we to switch to DVB-T2, mandate 6-7-8 MHz channel receiver capability, and 
include whatever mature video encoding standards that exist at the time of 
adoption while insisting on backwards compatibility, then we would have a 
flexible system that would allow small independent stations to continue to 
operate MPEG-2 DVB in 6 MHz channels (minimal reinvestment in the transmission 
chain,) while larger stations could perhaps purchase extra bandwidth (through 
auction?) and operate HVEC DVB-T2 in 8 MHz channels, perhaps using hierarchical 
modulation to serve mobile.

A second repacking of the television band seems to be in the offing, so now 
would be the time to implement such a plan.

My addled thoughts,

John
  ----- Original Message ----- 
  From: Mark Aitken 
  To: opendtv@xxxxxxxxxxxxx 

  But why limit the model to 6MHz channel slices into the future? You can get 
more efficiency with broader bandwidths.

  Thoughts?

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