MIMO:Number of Transmit Channels Property

NI WLAN Generation Toolkit 18.0 Help

Edition Date: October 2018

Part Number: 373725J-01

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Short Name: Number of Transmit Channels

Property of niWLANGeneration

Specifies the number of transmit channels for multiple input multiple output (MIMO) signals, as defined in section 20.3.3 of IEEE Standard 802.11n-2009.

If you set the Mapping Matrix Type property to Direct, the number of transmit channels must be equal to the number of space-time streams. If you set the Mapping Matrix Type property to values other than Direct, the number of transmit channels must be greater than or equal to the sum of the number of space-time streams and the Number of Extension Spatial Streams property. The toolkit defines the number of space-time streams using the MCS Index property and the STBC Index property, as specified in IEEE Standard 802.11n-2009.

If you set the Standard property to 80211A/G OFDM, 80211J OFDM, 80211P OFDM, 80211B/G DSSS, or 80211G DSSSOFDM and the Number of Transmit Channels property to greater than one, the same waveform is generated on multiple RFSG devices inside the niWLANG RFSG Create and Download Waveforms (Multiple Channel) VI.

The default value is 1. If you set the Standard property to 80211N MIMOOFDM or 80211AH MIMOOFDM, the valid values are 1 to 4, inclusive. If you set the Standard property to any other value, the valid values are 1 to 8, inclusive.

Remarks

The following table lists the characteristics of this property.

Datatype /images/reference/en-XX/help/373725J-01/ci32.gif
PermissionsRead/Write
High-level VIs niWLANG Set Number of Transmit Channels
ResettableNo

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