Atec RohdeSchwarz-SMW200A - Manual (Page 36)

Version 01.02, September 2013
36 Rohde & Schwarz R&S ® SMW200A Vector Signal Generator
MIMO fading (R&S ® SMW-K74 option)
The R&S ® SMW-K74 option allows up to 16 fading channels to be simulated as is required for 4x4 MIMO receiver tests. At least two
R&S ® SMW-B14 options must be installed (signal paths A and B), and two baseband sources (R&S ® SMW-B10) and the R&S ® SMW-
B13T option must be present.
Supported scenarios with two R&S ® SMW-B14 options:
Cells with gray background: up to 160 MHz bandwidth supported for this scenario
Cells with white background: up to 80 MHz bandwidth supported for this scenario
Entities (users,
cells, carriers)
Tx
antennas
Rx
antennas
1 2
1
1 ● ●
2 ● ●
2
1 ● ●
2 – –
Supported scenarios with four R&S ® SMW-B14 options:
Cells with gray background: up to 160 MHz bandwidth supported for this scenario
Cells with white background: up to 80 MHz bandwidth supported for this scenario
Entities (users,
cells, carriers)
Tx
antennas
Rx
antennas
1 2 3 4 8
1
1 ● ● – – -
2 ● ● ● ● -
3 – ● ● ● –
4 – ● ● ● –
8 ● ● – – –
2
1 ● ● – – –
2 ● ● – – –
3 – – – – –
4 – – – – –
8 – – – – –
Parameters common to all scenarios
Number of fading paths per fading channel
20 paths, see R&S ® SMW-B14
Steering matrix can be set by setting the diagonal elements of the correlation matrix
Correlation Correlation between corresponding fading paths of all Tx/Rx signal paths can be set in
a correlation matrix. For each fading path index, an individual matrix can be set.
correlation coefficient
setting range 0 % to 100 %
resolution 1 %
correlation phase
setting range 0° to 360°
resolution 1°
Correlation matrix setting individually or with Kronecker assumption
(Rx and Tx antenna correlation with
automatic calculation of matrix)
Matrix representation (real, imaginary) or (magnitude, phase)