I am working to configure TDM-MIMO on the AWR1843EVM. When TDM samples are collected from the 4 Rx corresponding to the 2 Tx in the bottom row and plot the range-angle heatmap after angle FFT, we get wrong results. However, when we take the complex conjugate of the samples from the 2nd Tx before processing for angle detection, we get correct results. This conjugation works consistently across different experimental setups making us suspect that there is a fixed negative sign being introduced in the data somewhere. Has TI done validation on TDM-MIMO, and is there an errata or known bug where you have seen this occur?
Thanks,
Bob
