Noise-Limited OTA Performance in Transmit Diversity Mode
R&S
®
AMS32-K31
7
User Manual 1175.6678.02 ─ 01
2. Select this hardware setup in the "General Settings" sub-dialog of an OTA test tem-
chapter 2.1.2.1, "Hardware Setup Selection"
3. In the "Communication Settings" sub-dialog, configure the radio link as required. Take
special care to select "TX Diversity" as a transmission scheme and to configure a
low-order, robust modulation scheme, typically QPSK, with a low transport block size
index. See
chapter 2.1.2.2, "Communication Settings"
4. In the "Fading Settings" sub-dialog, modify the static channel model of the commu-
nication tester, if desired. See
chapter 2.1.2.4, "Fading Settings"
2.1.1 Hardware Setup
In the "Hardware Setup" dialog, you can select the desired test case and call the R&S
CMW500 LTE driver configuration dialog in order to perform basic RF configurations.
Access:
"File > Hardware Setup Open/New..." in the R&S AMS32 main dialog window
(keyboard shortcut "Ctrl+H"). In the "Hardware Setup Open" dialog opened, select "New
> OTA Measurements" and click "OK".
The "noise-limited OTA performance test in transmit diversity mode" corresponds to the
selection "MIMO 2x2 with single cross-polarized test antenna" in the "Sensitivity" tab.
Fig. 2-1: Hardware setup for single-antenna tests
After selection of the test setup, a previously loaded R&S "CMW500-LTE" driver appears
in the yellow information field below the communication tester symbol (click "Extras >
Device List..." to load or configure the driver). You may also have to load drivers for the
positioner and antenna and select the two signal paths (right-click the "dB" symbols and
Configuration
