Signal Control and Signal Characteristics
R&S
®
SMW-K144
137User Manual 1178.8013.02 ─ 06
Settings:
Time Domain Windowing (WOLA).............................................................................. 137
SC Spacing/CP........................................................................................................... 137
Transition Time............................................................................................................137
Transition BB A Samples............................................................................................ 137
Time Domain Windowing (WOLA)
Activates/deactivates the time domain windowing.
Time domain windowing is a method that influences the spectral characteristics of the
signal. The method removes the spikes caused by the OFDM; it does not replace over-
sampling and subsequent signal filtering.
The abbreviation WOLA stands vor weighted-overlay-and-add.
Remote command:
[:SOURce<hw>]:BB:NR5G:TDWind:STATe on page 259
SC Spacing/CP
Indicates all allowed combinations of the subcarrier spacing (SSC) and the cyclic prefix
(CP), see Table 3-2.
Transition Time
Sets the transition time when time domain windowing is active.
The transition time defines the overlap range of two OFDM symbols. You can define
different transition times for each of the numerologies (SC Spacing/CP).
Remote command:
[:SOURce<hw>]:BB:NR5G:OUTPut:TDWind:S240K:TRTime on page 259
etc.
Transition BB A Samples
Indicates the number of samples during the Transition Time.
Remote command:
[:SOURce<hw>]:BB:NR5G:OUTPut:TDWind:S240K:TRTSamples? on page 260
etc.
6.7 Adjusting the Signal Power
In the R&S SMW, you can adjust the power level of the generated signal in different
ways.
This section explains the different power calculation modes and outlines the signal set-
tings influencing the relations between the power levels of the channels and signals in
the signal itself.
Overview of the power-related settings
The following settings influence the power level of the generated signal:
●
Output level (P
out
) of the instrument
Adjusting the Signal Power
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