OFDM vs 8VSB
Mon Nov 9 18:56:18 EST 2009
In a message dated 11/9/2009 12:44:45 P.M. Eastern Standard Time,
>>>believe that, on paper, there can be no doubt that OFDM (the DTV
transmission standard in most of the world outside of the US) is more
immune to multipath than 8VSB (eight-level vestigial sideband), the US
DTV-transmission standard. Whether this theoretical advantage exists
in practice may be a different matter, however. For certain, each new
generation of 8VSB-decoder ICs seems to improve upon the multipath
immunity of previous generations.<<<
COFDM thrives on multipath. Not so much now because of handheld devices,
but during the 90's when HDTV could have been rolled out, I always thought
that mobile TV would be digital TV's killer app but another technology beat
them to the punch. Mobile TV is installed in most subway and trains in the
Asian countries with 15 minutes programs.
I just don't understand the US always has to settle for "good enough"
legacy technology with built in limitations. The same applies for HD Radio.
Politics vs technology never seems to work.
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