User Guide
13 / 14
ErrorRatio
(PER)
point
in
11a
and11g,
and
8%
PER
point in
11b.
PER:Packet
Error
Ratio
(PER)
is
calculated
by
measuringthe
number
of
packetsreceived
correctlyand
comparing
with
the
number of
packets
expected.
%Packet
error rate
=
100*(1-
((Received
packets/expected
packets))
For
carrying
out the
receive
test,
connect
the
EVB
to
a
Vector
Signal
Generator
(VSG).
Then
setthe
RF
amplit
ude,
signal
waveform
and the
channel
inthesignal
generator
beforestartingthe
receive
tests.
You
need
to
configurethe
channel
(as
mentioned
below)
in
the
EVB
with
the
same
channel
whichis
set
in
Signal
Generator.
Theapplication
canbe
started
asfollowsto
start
receivingthe
packetsfromEVB.
Go
to‘rel
ease
’
folder.
$./receive<file>
<channel
number><start-stop>
<channel
width>
<file>
is
the
name
of
the
file
into
which
theaboveinformation
willbewritten.
In
addition,
youcan
seethis
information
on
the
console.
<channel
number>
is
thechannel
number
on
which
receive
tests
are
tobedone.For
2.4GHz
c
hannels,
please
refer
table
1 andfor
5GHz
channels,please
refer
table 2.
<start
–stopvalue>
is
to eitherstart
or
stop
receive
application.
To
start
set
this
valueto
‘0
’
and
‘1
’
to
stopreceive application.
<channel
width>
is
the
value
of
theoperatingbandwidth
of
the
channel.
Channel
width
values
are
specifiedin
the
followingtable.
Channel
Width
Value
20MHz
0
Table 5 Channel Width
Example:
#./receive
stats
600
Theabove
mentioned
command
will
start
the
receiveapplicationFile
–
stats
Channel
number
– 6
Start-Stop
–
0,
Start
Channel
Width
–0
(20MHz)
Thetestutilitydisplaysthe
following
information:
Total
number
of
received
packets
(with
correctCRC).
Total
number
of
packetswith
CRC
errors.
Total
number
ofFALSE
CCA’s
received.
Compute
the
PER
using
the
formula
mentioned
above.