Max-max antenna selection for multi-antenna two-way AF relaying networks

This paper investigates max-max antenna selection scheme in multiple-input multiple-output two-way relaying network, where two single-antenna source terminals T₁ and T₂ exchange information via an amplify-and-forward multi-antenna relay station, i.e., R, equipped with N ≥ 2 antennas. In max-max scheme, antenna selection is accomplished by selecting the largest channel gains from relay station to T₁ and T₂. Thus, one or two antennas may be selected. The outage performance of max-max scheme is studied and we obtain the lower and upper bounds of outage probability. Simulation results are provided to validate the analysis.