<s>
An	O
M-ary	B-Device
transmission	I-Device
is	O
a	O
type	O
of	O
digital	O
modulation	O
where	O
instead	O
of	O
transmitting	O
one	O
bit	O
at	O
a	O
time	O
,	O
two	O
or	O
more	O
bits	O
are	O
transmitted	O
simultaneously	O
.	O
</s>
