Vector Signal Analyzer
Error Vector Magnitude (EVM) and Modulation
Error Ratio (MER)
(Noꢃinaꢁ)
Data ꢁength in the foꢁꢁowing three tabꢁes is 1,250 syꢃboꢁs ꢀseudorandoꢃ bit
sequence (PRBS) at -30 dBꢃ ꢀower ꢁeveꢁ. These resuꢁts were obtained using the
NI 5663 onboard cꢁock (the NI 5652 LO source onboard cꢁock) and do not incꢁude
software equaꢁization using the NI Moduꢁation Tooꢁkit. Resuꢁts are the coꢃꢀosite
effect of both an NI 5663 vector signaꢁ anaꢁyzer and an NI 5673 RF vector
signaꢁ generator.
825 MHz Carrier Frequency
QAM Order Symbol Rate (kS/s)
·RRC
0.25
0.25
0.22
0.25
0.25
0.15
0.15
0.22
0.15
EVM (% RMS)
MER (dB)
160
0.3
0.4
0.5
0.7
1.0
0.4
0.5
1.1
0.4
52
49
46
41
37
44
43
35
43
M = 4
800
4,090
17,600
32,000
5,360
6,952
40,990
6,952
M = 16
M = 64
M = 256
3.4 GHz Carrier Frequency
QAM Order Symbol Rate (kS/s)
·RRC
0.25
0.25
0.22
0.25
0.25
0.15
0.15
0.22
0.15
EVM (% RMS)
0.65
MER (dB)
160
44
44
43
36
32
41
40
30
40
M = 4
800
0.65
4,090
17,600
32,000
5,360
6,952
40,990
6,952
0.74
1.13
M = 16
1.94
0.59
M = 64
0.66
2.15
M = 256
0.64
5.8 GHz Carrier Frequency
QAM Order Symbol Rate (kS/s)
·RRC
0.25
0.25
0.22
0.25
0.25
0.15
0.15
0.22
0.15
EVM (% RMS)
0.89
MER (dB)
160
41
41
40
34
31
38
37
30
36
M = 4
800
0.85
4,090
17,600
32,000
5,360
6,952
40,990
6,952
1.04
1.49
M = 16
2.00
0.83
M = 64
0.90
2.06
M = 256
1.00
BUY ONLINE at ni.coꢃ or CALL 800 813 3693 (U.S.)
7
NI [ National Instruments ]
