RFmxLTE_CfgNPUSCHDMRS
- Updated2024-10-14
- 2 minute(s) read
RFmxLTE_CfgNPUSCHDMRS
int32 __stdcall RFmxLTE_CfgNPUSCHDMRS (niRFmxInstrHandle instrumentHandle, char selectorString[], int32 NPUSCHDMRSBaseSequenceMode, int32 NPUSCHDMRSBaseSequenceIndex, int32 NPUSCHDMRSCyclicShift, int32 NPUSCHDMRSGroupHoppingEnabled, int32 NPUSCHDMRSDeltaSS);
Purpose
Configures the base sequence mode, base sequence index, cyclic shift, delta sequence shift of the narrowband physical uplink shared channel (NPUSCH) DMRS and specifies whether group hopping is enabled.
Use "carrier<k>" or "subblock<n>/carrier<k>" as the selector string to configure this function.
Parameters
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| Name | Type | Description | ||||
| instrumentHandle | niRFmxInstrHandle | Specifies the instrument session. The RFmx obtains this parameter from the RFmxLTE_Initialize function. | ||||
| selectorString | char[] | Specifies a selector string comprising of the signal name, subblock number and carrier number. If you do not specify the signal name, the default signal instance is used. Example: "subblock0/carrier0" "signal::sig1/subblock0/carrier0" You can use the RFmxLTE_BuildCarrierString function to build the selector string. |
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| NPUSCHDMRSBaseSequenceMode | int32 | Specifies whether the NPUSCHDMRSBaseSequenceIndex is computed by the measurement or user-specified. This parameter is valid when you set the NPUSCHDMRSGroupHoppingEnabled parameter to RFMXLTE_VAL_NPUSCH_DMRS_GROUP_HOPPING_ENABLED_FALSE, the value of
RFMXLTE_ATTR_NPUSCH_FORMAT attribute to 1, and the value of NPUSCH Number of Tones attribute to 3, 6, or 12.
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| NPUSCHDMRSBaseSequenceIndex | int32 | Specifies the base sequence index of the NPUSCH DMRS as defined in section 10.1.4.1.2 of the 3GPP TS 36.211 specification. This parameter is valid when you set the NPUSCHDMRSGroupHoppingEnabled parameter to RFMXLTE_VAL_NPUSCH_DMRS_GROUP_HOPPING_ENABLED_FALSE, the NPUSCHDMRSBaseSequenceMode parameter to RFMXLTE_VAL_NPUSCH_DMRS_BASE_SEQUENCE_MODE_MANUAL, and the value of NPUSCH Number of Tones attribute to 3, 6, or 12.
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| NPUSCHDMRSCyclicShift | int32 | Specifies the cyclic shift of the NPUSCH DMRS as defined in table 10.1.4.1.2-3 of the 3GPP TS 36.211 specification. This parameter is valid when you set the value of RFMXLTE_ATTR_NPUSCH_NUMBER_OF_TONES attribute to 3 or 6. If the value of RFMXLTE_ATTR_NPUSCH_NUMBER_OF_TONES attribute is 12, the NPUSCH DMRS Cyclic Shift parameter has a fixed value of 0. |
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| NPUSCHDMRSGroupHoppingEnabled | int32 | Specifies whether group hopping is enabled for the NPUSCH DMRS. This parameter is valid when the value of
RFMXLTE_ATTR_NPUSCH_FORMAT is equal to 1.
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| NPUSCHDMRSDeltaSS | int32 | Specifies the delta sequence shift of the NPUSCH DMRS that is used to calculate the sequence shift pattern, which in turn is used to compute the sequence group number as defined in section 10.1.4.1.3 of the 3GPP TS 36.211 specification. This parameter is valid when you set the NPUSCHDMRSGroupHoppingEnabled parameter to RFMXLTE_VAL_NPUSCH_DMRS_GROUP_HOPPING_ENABLED_TRUE. The default value is 0. Valid values are 0 to 29, inclusive. |
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Return Value
| Name | Type | Description | ||||||||
| status | int32 | Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an RFmx function to determine if an error has occurred. To obtain a text description of the status code and additional information about the error condition, call the RFmxLTE_GetError function. The general meaning of the status code is as follows:
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