Signal Routing and System Configuration
R&S
®
SMW200A
210User Manual 1175.6632.02 ─ 16
This test setup requires two R&S SMWs and four R&S SGS or four R&S SGT.
The 8x8 MIMO test setups require the signal of eight Rx antennas and 64 fading chan-
nels. The R&S SMW calculates 32 fading channels but considers the correlation of all
64 channels. The instrument outputs four streams simultaneously. Two of the streams
are output at the RF outputs and the other two can be routed to the analog and digital
I/Q connectors and processed by a further processing instrument. ( See Chapter 3.9.5,
"How to Cable the Instruments in MIMO Test Setups", on page 197).
A second R&S SMW is required to generate the second subset of fading channels
and streams. Logically, for the processing of two of the four streams, two additional
further processing instruments are required, too.
Example of test setup
Figure 3-24 shows an 8x8 MIMO test setup with two R&S SMW and four R&S SGT
connected to the digital I/Q outputs of the R&S SMW. You can use four R&S SGS
instead, too.
In this example, we distribute the trigger signal generated by R&S SMW#1 to trigger
both instruments simultaneously. You can trigger both instruments also with a com-
mon external trigger signal. If the latter is the case, consider to adapt the trigger con-
nections and settings.
How to Connect External Instruments and Configure the Signal Flow
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