Setting up a Multiple-Input, Multiple-Output (MIMO) System with PXIe-5831 Modules

You can set up a multiple-input, multiple-output (MIMO) system by using NI-RFSA and NI-RFSG to associate multiple PXIe-5831 modules, such as two PXIe-5820 Vector Signal Transceivers and two PXIe-3622 Vector Signal Up/Down Converters, all driven by one PXIe-5653 LO source.

Sharing one LO source among multiple PXIe-5831 instruments allows the RF signals to be phase coherent, which is necessary for MIMO system applications.

PXIe-5831 MIMO applications support the following features:

  • LO sharing for phase coherency
  • Homogeneous T-Clk synchronization for sample clock alignment
  • RFmx single chain MIMO waveforms and measurements
  • Trigger and marker alignment
  • Phase continuous switching