<s>
Detect	B-General_Concept
and	I-General_Concept
avoid	I-General_Concept
(	O
DAA	O
)	O
is	O
a	O
set	O
of	O
technologies	O
designed	O
to	O
avoid	O
interference	O
between	O
a	O
given	O
emitter	O
and	O
the	O
wireless	O
environment	O
.	O
</s>
<s>
That	O
means	O
it	O
could	O
interfere	O
with	O
WiMAX	O
,	O
3G	B-Architecture
or	O
4G	B-Architecture
networks	O
.	O
</s>
