  Approximate outage probability expressions are derived for systems employing
maximum ratio combining, when both the desired signal and the interfering
signals are subjected to $\eta-\mu$ fading, with the interferers having unequal
power. The approximations are in terms of the Appell Function and Gauss
hypergeometric function. A close match is observed between the outage
probability result obtained through the derived analytical expression and the
one obtained through Monte-Carlo simulations.
