<s>
Castalia	B-General_Concept
is	O
a	O
simulator	O
for	O
Wireless	B-Architecture
Sensor	I-Architecture
Networks	I-Architecture
(	O
WSN	B-Architecture
)	O
,	O
Body	B-Device
Area	I-Device
Networks	I-Device
and	O
generally	O
networks	O
of	O
low-power	O
embedded	B-Architecture
devices	I-Architecture
.	O
</s>
<s>
It	O
is	O
based	O
on	O
the	O
OMNeT++	B-Application
platform	O
and	O
used	O
by	O
researchers	O
and	O
developers	O
to	O
test	O
their	O
distributed	O
algorithms	O
and/or	O
protocols	O
in	O
a	O
realistic	O
wireless	O
channel	O
and	O
radio	O
model	O
,	O
with	O
a	O
realistic	O
node	O
behaviour	O
especially	O
relating	O
to	O
access	O
of	O
the	O
radio	O
.	O
</s>
<s>
Castalia	B-General_Concept
uses	O
the	O
lognormal	O
shadowing	O
model	O
as	O
one	O
of	O
the	O
ways	O
to	O
model	O
average	O
path	O
loss	O
,	O
which	O
has	O
been	O
shown	O
to	O
explain	O
empirical	O
data	O
in	O
WSN	B-Architecture
.	O
</s>
<s>
Castalia	B-General_Concept
's	O
temporal	O
variation	O
modeling	O
is	O
designed	O
to	O
be	O
fitted	O
to	O
measured	O
data	O
instead	O
of	O
making	O
specific	O
assumptions	O
on	O
the	O
creation	O
of	O
fast	O
fading	O
.	O
</s>
<s>
Other	O
features	O
of	O
Castalia	B-General_Concept
include	O
:	O
physical	O
process	O
modeling	O
,	O
sensing	O
device	O
bias	O
and	O
noise	O
,	O
node	O
clock	O
drift	O
,	O
and	O
several	O
MAC	B-Protocol
and	O
routing	B-Protocol
protocols	I-Protocol
implemented	O
.	O
</s>
<s>
Castalia	B-General_Concept
was	O
developed	O
at	O
the	O
National	O
ICT	O
Australia	O
starting	O
in	O
2006	O
.	O
</s>
<s>
The	O
current	O
release	O
version	O
is	O
3.3	O
(	O
available	O
at	O
GitHub	B-Application
)	O
.	O
</s>
