Qpsk, Wlan – Atec Agilent-N5182A User Manual
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1. Internal Channel Correction is available with firmware revision A.01.60 and Option N5182/62AK-R2C.
QPSK
Measured EVM performance versus modulation rate
EVM (% RMS)
Modulation rate (MHZ)
2
1.5
1
0.5
0
0.01
0.02
0.1
0.5
2
10
20
ALC ON
ALC OFF
Measured EVM performance versus modulation rate
(Internal Channel Corrections OFF and ON)
1
EVM (% RMS
)
Modulation rate (MHZ)
0
0
10
20
30
40
50
60
70
80
1
2
3
4
5
6
7
8
Channel Correction ON
Channel Correction OFF
Measured EVM performance versus carrier frequency
EVM (% RMS)
Frequency (MHZ)
2
1.5
1
0.5
0
25
250 1000 1750 2500 3250 4000 4750 5500
ALC ON
Measured EVM performance versus carrier frequency
(Internal Channel Corrections OFF and ON)
1
EVM (% RMS)
Frequency (MHZ)
0
0
1000
2000
3000
4000
5000
6000
1
3
2
4
5
6
7
9
8
Channel Correction ON
Channel Correction OFF
Signal configuration: QPSK modulation
Alpha:
0.25
Power level:
+4 dBm
Symbol rate:
4 MSymb/s
Signal configuration: QPSK modulation
Alpha:
0.25
Power level:
+4 dBm
Symbol rate:
62.5 MSymb/s
Signal configuration: QPSK modulation
Alpha:
0.25
Power level:
+4 dBm
Carrier frequency
2.2 GHz
Signal configuration: QPSK modulation
Alpha:
0.25
Power level:
+4 dBm
Carrier frequency
2.2 GHz
Signal configuration: OSR: 4
Window length:
16
Power level:
0 dBm
Carrier frequency:
5.805 GHz
Signal configuration: OSR: 4
Window length:
16
Power level:
0 dBm
Carrier frequency:
5.805 GHz
802.11a WLAN spectral mask performance
802.11a WLAN EVM performance
WLAN