In massive MIMO how many minimum TX RX comes?

Hi All.

In massive MIMO how many minimum TX RX comes?

Is 8x8 massive MIMO? Or greater than 16x16?

Massive MIMO concept based on number of antenna element (AE).

If AE > 8 then it’s m-MIMO.

Basically smart antenna concept

It can be 64 AE,128 AE, 256 AE.

Start with 8*8.