  We analyze the outage performance of a two-way fixed gain amplify-and-forward
(AF) relay system with beamforming, arbitrary antenna correlation, and
co-channel interference (CCI). Assuming CCI at the relay, we derive the exact
individual user outage probability in closed-form. Additionally, while
neglecting CCI, we also investigate the system outage probability of the
considered network, which is declared if any of the two users is in
transmission outage. Our results indicate that in this system, the position of
the relay plays an important role in determining the user as well as the system
outage probability via such parameters as signal-to-noise imbalance, antenna
configuration, spatial correlation, and CCI power. To render further insights
into the effect of antenna correlation and CCI on the diversity and array
gains, an asymptotic expression which tightly converges to exact results is
also derived.
