Figure 4
From: Robust precoder-decoder design for physical layer network coding-based MIMO two-way relaying system
![Figure 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2F1687-1499-2013-137/MediaObjects/13638_2013_Article_700_Fig4_HTML.jpg)
ABER versus transmit SNR: three different design schemes. Average BER variation with SNR (γ) for three different design schemes. N=2, P T /σ2=8γ.