<s>
Low-energy	B-Device
adaptive	I-Device
clustering	I-Device
hierarchy	I-Device
(	O
"	O
LEACH	O
"	O
)	O
is	O
a	O
TDMA-based	O
MAC	B-Protocol
protocol	I-Protocol
which	O
is	O
integrated	O
with	O
clustering	O
and	O
a	O
simple	O
routing	O
protocol	O
in	O
wireless	B-Architecture
sensor	I-Architecture
networks	I-Architecture
(	O
WSNs	B-Architecture
)	O
.	O
</s>
<s>
The	O
goal	O
of	O
LEACH	O
is	O
to	O
lower	O
the	O
energy	O
consumption	O
required	O
to	O
create	O
and	O
maintain	O
clusters	O
in	O
order	O
to	O
improve	O
the	O
life	O
time	O
of	O
a	O
wireless	B-Architecture
sensor	I-Architecture
network	I-Architecture
.	O
</s>
<s>
LEACH	O
also	O
uses	O
CDMA	B-Protocol
so	O
that	O
each	O
cluster	O
uses	O
a	O
different	O
set	O
of	O
CDMA	B-Protocol
codes	O
,	O
to	O
minimize	O
interference	O
between	O
clusters	O
.	O
</s>
