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196 Chapter 16
LTE Measurement Application
Modulation Analysis Specifications
Modulation Analysis Specifications
Description Specifications Supplemental Information
EVM
Input Range 0 dBm, signal level within one range step of
overload
Residual EVM Floor
a
for
Downlink (OFDMA)
a. Overall EVM and Data EVM using 3GPP standard-defined calculation. Phase Noise Optimization set
to Best Close-in (<20 kHz).
Signal Bandwidth
5 MHz 1.35% (−37.3 dB) 0.56% (−45 dB) (nominal)
10 MHz 1.35% (−37.3 dB) 0.63% (−44 dB) (nominal)
20 MHz
b
b. Requires Option B25 (IF bandwidth above 10 MHz, up to 25 MHz).
1.35% (−37.3 dB) 0.63% (−44 dB) (nominal)
Residual EVM Floor
a
for
Uplink (SC-FDMA)
Signal Bandwidth
5 MHz 1.35% (−37.3 dB) 0.56% (−45 dB)(nominal)
10 MHz 1.35% (−37.3 dB) 0.56% (−45 dB) (nominal)
20 MHz
b
1.35% (−37.3 dB) 0.56% (−45 dB)(nominal)
Frequency Error
Lock range ±2.5 × subcarrier spacing = 37.5 kHz for default
15 kHz subcarrier spacing (nominal)
Accuracy ±1 Hz + tfa
c
(nominal)
c. tfa = transmitter frequency × frequency reference accuracy.