Comparative performance analysis of wireless RSSI in wireless sensor networks motes in tropical mixed-crop precision farm
Date
2012-02-08Author
Azizi, Harun
Ramli, M. F.
Latifah Munirah, Kamarudin
Ndzi, David Lorater
Ali Yeon, Md Shakaff, Prof. Dr.
Ammar, Zakaria
Mahmad, Nor Jaafar
Metadata
Show full item recordAbstract
T
o
provide reliable and adequate network coverage
whilst
minimizing
the
cost
of
wireless sensor network (
WSN
)
deployments
, detailed knowledge of wireless signal
propagation within the specific environment
s
is required
.
There are many WSN devices on the marke
t
that have been
developed using proprietary systems and therefore have
different performances
, although implementing similar
standards
.
This paper presents a comparative performance
measurement and
analysis of three types of
WSN devices
evaluated for appl
ication
in
a
mixed
-
crop farm.
The results
show that the
Xbee
-
PRO
maintains very strong RSSI values in
open field measurements that
are
sometime 15 dBm higher
than those obtained from the
IRIS
and
Microchip
motes.
Overall, two important factors that influen
ce WSN node
performances are antenna height and the type of antenna used.
Whip omni
-
directional antenna has been s
hown to
double the
range of the WSN node compared to a patch antenna.
R
esult
s
also show that
the
l
og
-
distance propagation model
is a more
flex
ible model that can be used to model a variety of channels,
although it lacks standard global parameter values
.