  Approximate Symbol error rate (SER), outage probability and rate expressions
are derived for receive diversity system employing optimum combining when both
the desired and the interfering signals are subjected to Rician fading, for the
cases of a) equal power uncorrelated interferers b) unequal power interferers
c) interferer correlation. The derived expressions are applicable for an
arbitrary number of receive antennas and interferers and for any quadrature
amplitude modulation (QAM) constellation. Furthermore, we derive a simple
closed form expression for SER in the interference-limited regime, for the
special case of Rayleigh faded interferers. A close match is observed between
the SER, outage probability and rate results obtained through the derived
analytical expressions and the ones obtained from Monte-Carlo simulations.
