LTE Signaling
R&S
®
CMW-KM5xx/-KS5xx
168
User Manual 1173.9628.02 ─ 16
Precoding Matrix
Selects the precoding matrix for closed loop spatial multiplexing (transmission mode 4
or 6).
Depending on the scheduling type, the downlink signal follows the reported PMI value.
In that case, the configured PMI value is used as initial value until a PMI report has
been received.
The meaning of the PMI values is defined in 3GPP TS 36.213, section 7.2.4.
Option R&S CMW-KS510 is required.
Remote command:
Static Channel Model
This section is displayed for transmit diversity and spatial multiplexing, if supported by
the scenario.
The matrix defines the radio channel coefficients, see
chapter 2.2.11.1, "Radio Chan-
Each element of the matrix is a complex number, defined via its phase and its magni-
tude.
●
2x2 channel model:
You can configure the phase of each number and the square of the magnitude of
h
11
and h
21
. The other magnitudes are adapted automatically.
If the model is disabled, there is no coupling between the signals of the eNodeB
antennas. So each UE antenna receives only the signal of one eNodeB antenna.
●
4x2 channel model:
You can configure the phase and the square of the magnitude of all coefficients.
The sum of all magnitude squares within each line of the matrix must equal 1.
The sum is checked automatically. A correct sum is indicated by , a wrong sum
by , followed by the sum. Configure all values of a line so that the sum equals 1,
then press the "Apply" button.
Remote command:
Beamforming Model
This section configures beamforming. It is displayed for transmission mode 7 and 8.
GUI Reference
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