Getting Started
R&S
®
SMW200A
101User Manual 1175.6632.02 ─ 16
The external digital I/Q signals are further processed in the baseband section (e.g.
fading, addition of noise)
●
The signal routing (in the standard "classic" mode)
The external and internal baseband signals can be routed and added (possibly with
frequency, phase and power offsets).
The "I/Q Digital" block is the access point to the settings of:
●
The digital I/Q output signals
●
The digital I/Q impairments
2.4.1.5 Fading Simulator ("Fading" Blocks)
The "Fading" block is displayed only in instruments equipped with the option
R&S SMW-B14, Fading Simulator. This block controls the fading module and, in stan-
dard mode, the signal routing at the output of this module.
The fading simulator functionality enables you to simulate real time fading effects on
the baseband signal. Provided the instrument is equipped with the required options, up
to 20 dynamic fading paths in a SISO mode (Single Input Single Output, i.e. non-MIMO
mode) and up to 20 paths per MIMO channel in MIMO mode can be created simultane-
ously.
The fading extension options provide even more functionality, for example:
●
Second option R&S SMW-B14 permits also real two-channel fading irrespective of
the RF carrier spacing of the two channels
●
The option R&S SMW-K71 comprises the 3GPP dynamic fading configurations
moving propagation and birth-death propagation, and the fine delay fading configu-
rations offering enhanced delay resolution
●
The option R&S SMW-K72 extends the statistic functions and is required for addi-
tional fading profiles and some of the predefined test scenarios
●
The option R&S SMW-K74 enables the simulation of MIMO scenarios with up to 8
transmitting or 8 receiving antennas.
2.4.1.6 Additional White Gaussian Noise ("AWGN" Blocks)
The "AWGN" block is displayed only in instruments equipped with at least one option
R&S SMW-K62. This block controls the additional white Gaussian noise generator
(AWGN). An additive white noise is required for measurements of mobile radio base
stations.
2.4.1.7 "I/Q Stream Mapper" Block
As one of the access points to the system configuration settings, the "I/Q Stream Map-
per" provides direct access for configuring the distribution and mapping of the gener-
ated I/Q streams to the available output connectors, to the analog RF and I/Q output
and to the digital I/Q output connectors.
System Overview
To Next Page
Loading...
