These commands apply to a fader setup when using a MIMO configuration. A basic fader setup requires that the commands shown below are executed. Custom selections for the correlation source and path source require additional commands to set their respective parameters or values.
Basic Fader set up commands are:
Scenario for Channel Models
Numerical Choices:
FSIMulator[1]|2 – These choices correspond to the Master Setup being configured. For Multi-user MIMO, a Master Setup is required for each user.
FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16 – The fader number refers to the fader simulation block that you are configuring within the correlation group.
[:SOURce]:FSIMulator[1]|2:ALL:LOAD
This command downloads a dynamic fading file for each fading group when dynamic fading is enabled. The dynamic fading file to be used is selected using the :DFFile command.
[:SOURce]:FSIMulator[1]|2:COUNt?
This query returns the number of fading groups in the configuration when the last configuration was loaded. For Multi-user MIMO configurations, the number depends on the total number of users, for example, 2 in a 2x4 MU-MIMO configuration; all other configurations have just one fading group.
[:SOURce]:FSIMulator[1]|2:CSOurce STAN|ANT|MATR
[:SOURce]:FSIMulator[1]|2:CSOurce?
This command selects the parameters that will be used to generate the correlation matrix.
|
STAN |
This choice selects the channel correlation to be generated using standard path and antenna configurations as recommended by the respective standard committee. |
|
ANT |
This choice selects the channel correlation to be generated using a user-defined custom antenna setup. |
|
MATR |
This choice selects a user-defined channel correlation matrix. The firmware does not generate the matrix. |
[:SOURce]:FSIMulator[1]|2:DFADing ON|OFF|1|0
[:SOURce]:FSIMulator[1]|2:DFADing?
This command turns dynamic fading on or off.
[:SOURce]:FSIMulator[1]|2:DFFile "<filename>"
[:SOURce]:FSIMulator[1]|2:DFFile?
This command selects a previously created dynamic fading file to use when dynamic fading is enabled. Refer tUsing an Excel Spreadsheet Template or Using a Text Editor for help in creating a dynamic fading file.
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:MODE ON|OFF|THR
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:MODE?
This command sets the mode of the fading simulation to normal (on), off, or pass through.
|
ON |
This choice sets the fader to apply impairments to the signal passing through the fader. |
|
OFF |
This choice turns the fader off; no signal is transmitted through the selected fader block. |
|
THR |
This choice allows you to test the waveform behavior without applying impairments. It passes the signal through a fader block without applying fading to allow easier synchronization between the DUT and the PXB with the same fader backoff as with the fader enabled. |
[:SOURce]:FSIMulator[1]|2:
[:SOURce]:FSIMulator[1]|2:
This command sets the carrier frequency to use for Doppler effects in the fading simulations. When the carrier frequency is changed, either the Doppler frequency or the vehicle speed will change according to coupling specified in the Carrier Frequency Coupling command. The carrier frequency is not coupled automatically to any external instrument frequencies; ensure that it matches the RF source to avoid Doppler errors.
The value <val> is expressed Hz.
Range: 1 to 44 GHz
[:SOURce]:FSIMulator[1]|2:OTA:MPRobe[:STATe] ON|OFF|1|0
[:SOURce]:FSIMulator[1]|2:OTA:MPRobe[:STATe]?
This command turns on or off multiprobe antenna MIMO OTA test capability.
ON | 1 | This choice enables the PXB fader for MIMO OTA multiprobe test (e.g., Ring of Probes Method). Turning on multiprobe test using this command will enable all |
OFF | 0 | This default choice disables multiprobe test. Use this choice for all non-multiprobe fading scenarios, including the MIMO OTA 2-Stage Method. |
[SOURce]:FSIMulator[1]|2:PCSource STAN|CUST
[:SOURce]:FSIMulator[1]|2:PCSource?
This command selects whether to use path parameters settings as specified by the standard or user-defined path configurations to generate the correlation matrix.
To be effective, this command requires that the CSOurce command is executed.
STAN | This choice selects the standard path configurations as specified for the selected channel model. |
CUST | This choice selects custom path configurations with user-defined values. |
[:SOURce]:FSIMulator[1]|2:SEED <val>
[:SOURce]:FSIMulator[1]|2:SEED?
This command sets the random number generation seed to be used for the waveform playback as a quoted string, for example, "0x1234". If it is set to zero, the generated fading will be different for each playback to provide randomness for each test. To reproduce the same fading environment for the same configuration as the last time it was played, use the same seed value (other than 0) each time.
Range: 0 to 289 – 1
[:SOURce]:FSIMulator[1]|2:STANdard:ARMode TX|RX
[:SOURce]:FSIMulator[1]|2:STANdard:ARMode?
This command selects the antenna for angle rotation.
[:SOURce]:FSIMulator[1]|2:STANdard:CDMA:SCENario CAS1|CAS2|CAS3|CAS4|CAS5|CAS6
[:SOURce]:FSIMulator[1]|2:STANdard:CDMA:SCENario?
This command selects a fading profile from the CDMA2000 channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:CONE:SCENario CAS1|CAS2|CAS3|CAS4|CAS5
[:SOURce]:FSIMulator[1]|2:STANdard:CONE:SCENario?
This command selects a fading profile from the cdmaOne channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:CTFN:SCENario TUX20T|RAX10T|HTX20T
[:SOURce]:FSIMulator[1]|2:STANdard:CTFN:SCENario?
This command selects a fading profile from the COST259 channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:CTYPe HIGH|MEDium|LOW|BFORming
[:SOURce]:FSIMulator[1]|2:STANdard:CTYPe?
This command selects the correlation that best typifies the antenna relationships between the base station and mobile station when using a standard channel model. These predefined correlation types include the antenna pattern and antenna element polarization as specified by the respective standard.
| Mobile WiMAX | LTE |
HIGH
| Selects a spatial correlation. It is usually obtained from a BS uniform linear array with four wavelength spacing and an MS uniform linear array with a half-wavelength spacing (BS 4λ, MS λ/2). | Selects a spatial correlation of 0.9 for both transmit and receive antennas where antennas are assumed to be linear spatial arrays of 1, 2, or 4 elements. |
MEDium | Selects a polarization correlation (BS, MS cross-polarized). It is usually obtained from a cross-polarized mobile station antenna and a slant cross-polarized base station antenna. | Selects a spatial correlation of 0.3 for transmit antennas and 0.9 for receive antennas where antennas are assumed to be linear spatial arrays of 1, 2, or 4 elements. |
LOW
| Selects a spatial and polarization correlation (BS 4λ, MS λ/2 cross-polarized). | Selects a zero correlation between antenna elements where antennas are assumed to be linear spatial arrays of 1, 2, or 4 elements. |
BFORming | Selects a correlation that optimizes gain in coverage or capacity in the direction of the signal. This correlation type is only selectable for 4x2 or 2x4 uplink configuration. | N/A |
[:SOURce]:FSIMulator[1]|2:STANdard:DVB:EDELay <val>
[:SOURce]:FSIMulator[1]|2:STANdard:DVB:EDELay?
This command sets the additional delay for DVB fading paths 712 that are part of the echo. Use this command only after changing the Channel Model to DVB, selecting the Mobile SFN scenario and selecting an echo type.
The value <val> is expressed in seconds.
Range: 0 s to 1 ms
[:SOURce]:FSIMulator[1]|2:STANdard:DVB:ELOSs <val>
[:SOURce]:FSIMulator[1]|2:STANdard:DVB:ELOSs?
This command sets the additional loss for DVB fading paths 712 that are part of the Weak long Echo (WLECho) selection. Use this command only after changing the Channel Model to DVB, selecting the Mobile SFN scenario and selecting an echo type.
Range: 0 dB to 20 dB
[:SOURce]:FSIMulator[1]|2:STANdard:DVB:ETYPe WLECho|SLECho|SSECho
[:SOURce]:FSIMulator[1]|2:STANdard:DVB:ETYPe?
This command selects the DVB-H standards-based echo type for the Mobile SFN (MSFN) scenario. Use this command only after changing the Channel Model to DVB and selecting the MSFN scenario.
[:SOURce]:FSIMulator[1]|2:STANdard:DVB:SCENario P16|MTU6|PI|PO|MSFN
[:SOURce]:FSIMulator[1]|2:STANdard:DVB:SCENario?
This command selects a fading profile from the DVB channel model. Refer to the respective technology for details of each delay profile. Selection of the MSFN scenario also requires the selection of the echo.
[:SOURce]:FSIMulator[1]|2:STANdard:EVDO:SCENario CFG1|CFG2|CFG3|CFG4|CFG5
[:SOURce]:FSIMulator[1]|2:STANdard:EVDO:SCENario?
This command selects a fading profile from the 1xEVDO channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:FWIMax:ATYPe OMN|TDEG
[:SOURce]:FSIMulator[1]|2:STANdard:FWIMax:ATYPe?
This command sets the antenna configuration for the Fixed WiMAX profile. See the Fixed WiMAX topic for details.
OMN | This choice sets a omni-directional antenna configuration. |
TDEG | This choice sets a 30-degree directional antenna configuration. |
[:SOURce]:FSIMulator[1]|2:STANdard:FWIMax:CELL NIN|SEV|FIV
[:SOURce]:FSIMulator[1]|2:STANdard:FWIMax:CELL?
This command sets the cell coverage for the Fixed WiMAX omni antenna or 30 degree antenna profile. See the Fixed WiMAX topic for details.
NIN | This choice sets a cell coverage of 90% |
SEV | This choice sets a cell coverage of 75% |
FIV | This choice sets a cell coverage of 50%. This choice is only available for SUI-5 and SUI-6 scenarios. |
[:SOURce]:FSIMulator[1]|2:STANdard:FWIMax:SCENario SUI1|SUI2|SUI3|SUI4|SUI5|SUI6
[:SOURce]:FSIMulator[1]|2:STANdard:FWIMax:SCENario?
This command selects a fading profile from the Fixed WiMAX channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:GEDGe:SCENario RAX1|RAX2|HTX12T1|HTX12T2|HTX6T1|HTX6T2|TUX12T1|TUX12T2|TUX6T1|TUX6T2|EQX|TIX
[:SOURce]:FSIMulator[1]|2:STANdard:GEDGe:SCENario?
This command selects a fading profile from the GSM/EDGE channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:HSPA:SCENario CAS1|CAS2|CAS3|CAS4|CAS5|CAS6|CAS8|IPA|IPB|IVA
[:SOURce]:FSIMulator[1]|2:STANdard:HSPA:SCENario?
This command selects a fading profile from the HSPA channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:LINK DOWN|UP
[:SOURce]:FSIMulator[1]|2:STANdard:LINK?
This command sets the link direction for the signal:
DOWN (base station) or UP (mobile station).
[:SOURce]:FSIMulator[1]|2:STANdard:LTE:ASASpread NARRow|WIDE
[:SOURce]:FSIMulator[1]|2:STANdard:LTE:ASASread?
This command selects the statistical model that best fits the spatial distribution that characterizes the per-path amount of power arriving at the base/mobile station in an LTE Single Cluster SCME scenario.
[:SOURce]:FSIMulator[1]|2:STANdard:LTE:DFRequency LOW|MEDium|HIGH
[:SOURce]:FSIMulator[1]|2:STANdard:LTE:DFRequency?
This command sets the Doppler frequency for the LTE channel model in a MIMO configuration.
LOW | This choice selects a low Doppler frequency of 5 Hz and vehicle speed of 5.4 km/h to the LTE channel model. |
MEDium | This choice applies a medium Doppler frequency of 70 Hz and vehicle speed of 75.6 km/h to the LTE channel model. |
HIGH | This choice applies high Doppler frequency of 300 Hz and vehicle speed of 972 km/h to the LTE channel model. |
[:SOURce]:FSIMulator[1]|2:STANdard:LTE:SCENario ETU|EPA|EVA|HSTO|HSTT|HSTLC|MPETU|MPAWGN|SMICRO|SMACRO|MSMIcro|MWINner|SCEPa|SCSCme|TDUNiform
[:SOURce]:FSIMulator[1]|2:STANdard:LTE:SCENario?
This command selects a fading profile for the LTE channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:LTE:SPEed LOW|MIDdle
[:SOURce]:FSIMulator[1]|2:STANdard:LTE:SPEed?
This command selects the speed in an LTE MIMO OTA Test channel model scenario..Refer to the respective technology for details of each profile choice.
Dependency: These commands are only used to set the parameters when using a High Speed Train Channel Mode.
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:STANdard:LTE:HSTrain:BSMDistance <val>
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:STANdard:LTE:HSTrain:BSMDistance?
This command sets the minimum distance from the base station to the mobile (BS-Railway track distance) when using the LTE high speed train profile..
To be valid, this command requires that the LTE channel model, and LTE high speed train profile are executed. See also related commands :BSIDistance,:TSPeed,:MDFRequency.
The variable <val> is expressed in meters.
Range: 0
to 1 km
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:STANdard:LTE:HSTrain:BSIDistance <val>
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:STANdard:LTE:HSTrain:BSIDistance?
Sets the initial distance (Ds/2) that the mobile must travel before passing the base station (assuming that the initial distance is much larger than Dmin) when using the LTE high speed train profile.
To be valid, this command requires that the LTE channel model, and high speed train profile are executed. See also related commands :TSPeed,:MDFRequency,:BSMDistance.
The variable <val> is expressed in meters.
Range: 10
m to 100 km
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:STANdard:LTE:HSTrain:TSPeed <val>
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:STANDard:LTE:HSTrain:TSPeed?
This command sets the train speed for the LTE high speed train profile.
To be valid, this command requires that the LTE standard model, and LTE high speed train profile. commands are executed.
See also related commands :BSIDistance,:MDFRequency,:BSMDistance.
The variable <val> is expressed in km/h.
Range: 0
to 1000 km/h
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:STANdard:LTE:
[:SOURce]:FSIMulator[1]|2:FADer[1]|2|3|4|5|6|7|8|9|10|11|12|13|14|15|16:LTE:
This command sets the maximum Doppler frequency for the LTE high speed train profile.
To be valid, this command requires that the LTE channel model, and high speed train profile are executed. See also related commands :TSPeed,:BSIDistance,:BSMDistance.
The variable <val> is expressed in Hertz.
Range: 0 to 1.6 kHz
[:SOURce]:FSIMulator[1]|2:STANdard:MWIMax:SCENario PEDB|VA|VAHSpeed
[:SOURce]:FSIMulator[1]|2:STANdard:MWIMax:SCENario?
This command selects a fading profile from the TD-SCDMA channel model. Refer to therespective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:PASpectrum:RX GAUSsian|LAPLacian|UNIForm
[:SOURce]:FSIMulator[1]|2:STANdard:PASpectrum?
This command selects the statistical distribution to model the per-path spatial distribution of the power azimuth spectrum for the receiver antenna when using a custom antenna setup.
GAUSsian | This choice selects a normal distribution to model the per-path power azimuth spectrum (PAS) for the received signals. |
This choice a Laplacian distribution to model the per-path power azimuth spectrum (PAS) for the received signals. | |
UNIForm | This choice selects a uniform (constant) distribution to model the per-path power azimuth spectrum (PAS) for the transmitted/received signals. |
[:SOURce]:FSIMulator[1]|2:STANdard:PASpectrum:TX GAUSsian|LAPLacian|UNIForm
[:SOURce]:FSIMulator[1]|2:STANdard:PASpectrum?
This command selects the statistical distribution to model the per-path spatial distribution of the power azimuth spectrum for the transmit antenna when using a custom antenna setup.
GAUSsian | This choice selects a normal distribution to model the per-path power azimuth spectrum (PAS) for the transmitted signals. |
This choice a Laplacian distribution to model the per-path power azimuth spectrum (PAS) for the transmitted signals. | |
UNIForm | This choice selects a uniform (constant) distribution to model the per-path power azimuth spectrum (PAS) for the transmitted signals. |
[:SOURce]:FSIMulator[1]|2:STANdard:TDSCdma:SCENario CAS1|CAS2|CAS3
[:SOURce]:FSIMulator[1]|2:STANdard:TDSCdma:SCENario?
This command selects a fading profile from the TD-SCDMA channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:TECHnology <standard_name>
[:SOURce]:FSIMulator[1]|2:STANdard:TECHnology?
This command selects the standard channel model to be applied to the fading simulation in a MIMO configuration. The channel model selected determines the path configurations, antenna setups, and correlation matrix as specified by their respective standard bodies.
Standard Name | Technology |
CDMA2000 | cdma2000 |
WCDMA | W-CDMA. |
GSMEDGE | GSM/EDGE |
COST259 | COST259 |
WLAN | Wireless LAN a/b/g |
XEVDO | 1xEV-DO |
TDSCDMA | TD-SCDMA |
CDMAONE | cdmaOne |
HSPA | HSDPA |
TETRA | TETRA |
FWIM | Fixed WiMAX (802.16 OFDM) |
MWIM | Mobile WiMAX (WiMAX Forum Mobile RCT-Wave 2 Amendment)® |
LTE | LTE |
DVB | DVB-T, DVB-H |
DEFault | User-defined |
[:SOURce]:FSIMulator[1]|2:STANdard:TETRa:SCENario STATic|RAX|TUX|BUX|HTX|EQX
[:SOURce]:FSIMulator[1]|2:STANdard:TETRa:SCENario?
This command selects a fading profile from the TETRA channel model. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:WCDMa:SCENario CAS1|CAS2|CAS3|CAS4|CAS5|CAS6|BDE|MPR
[:SOURce]:FSIMulator[1]|2:STANdard:WCDMa:SCENario?
This command selects the fading profiles used for W-CDMA. Refer to the respective technology for details of each profile choice.
[:SOURce]:FSIMulator[1]|2:STANdard:WLAN:SCENario MODELA|MODELB|MODELC|MODELD|MODELE
[:SOURce]:FSIMulator[1]|2:STANdard:WLAN:SCENario?
This command selects a fading profile from the Wireless LAN a/b/g channel model. Refer to the respective technology for details of each profile choice.