<s>
16VSB	B-Device
is	O
an	O
abbreviation	O
for	O
16-level	O
vestigial	O
sideband	O
modulation	O
,	O
capable	O
of	O
transmitting	O
four	O
bits	O
(	O
24	O
=	O
16	O
)	O
at	O
a	O
time	O
.	O
</s>
<s>
Other	O
slower	O
but	O
more	O
rugged	O
forms	O
of	O
VSB	O
include	O
2VSB	B-Device
,	O
4VSB	B-Device
,	O
and	O
8VSB	B-Device
.	O
</s>
<s>
16VSB	B-Device
is	O
capable	O
of	O
twice	O
the	O
data	O
capacity	O
of	O
8VSB	B-Device
;	O
while	O
8VSB	B-Device
delivers	O
19.39	O
Mbit/s	O
(	O
Megabits	O
per	O
second	O
)	O
in	O
a	O
6-MHz	O
television	O
channel	O
,	O
16VSB	B-Device
could	O
deliver	O
38.78	O
Mbit/s	O
,	O
while	O
making	O
the	O
sacrifice	O
of	O
being	O
more	O
prone	O
to	O
transmission	O
error	O
.	O
</s>
<s>
While	O
8VSB	B-Device
is	O
the	O
ATSC	B-Device
digital	O
broadcast	B-Operating_System
modulation	O
format	O
,	O
16VSB	B-Device
was	O
planned	O
for	O
cable	O
distribution	O
.	O
</s>
<s>
16VSB	B-Device
is	O
about	O
twice	O
as	O
susceptible	O
to	O
noise	O
,	O
therefore	O
less	O
suitable	O
than	O
8VSB	B-Device
for	O
broadcast	B-Operating_System
,	O
but	O
well	O
suited	O
to	O
the	O
signal-to-noise	O
ratio	O
of	O
hybrid	B-Architecture
fiber-coax	I-Architecture
distribution	O
,	O
allowing	O
twice	O
as	O
much	O
programming	O
in	O
a	O
6-MHz	O
channel	O
.	O
</s>
<s>
As	O
of	O
2007	O
,	O
a	O
majority	O
of	O
cable	O
companies	O
have	O
chosen	O
to	O
extend	O
their	O
existing	O
quadrature	O
amplitude	O
modulation-based	O
systems	O
to	O
carry	O
digital	B-Application
television	I-Application
rather	O
than	O
adopting	O
any	O
form	O
of	O
VSB	O
.	O
</s>
<s>
It	O
is	O
probable	O
that	O
16VSB	B-Device
has	O
been	O
replaced	O
by	O
Digital	O
Transmission	O
Standard	O
For	O
Cable	O
Television	O
a	O
cable	O
standard	O
that	O
defines	O
64QAM	B-Device
and	O
256QAM	B-Device
transmission	O
for	O
digital	O
cable	O
.	O
</s>
