  User performance on a wireless network depends on whether a neighboring
cochannel interferer applies a single (spatial) stream or a multi stream
transmission. This work analyzes the impact of interference rank on a
beamforming and orthogonal space-time block coded (OSTBC) user transmission. We
generalize existing analytical results on
signal-to-interference-plus-noise-ratio (SINR) distribution and outage
probability under arbitrary number of unequal power interferers. We show that
higher rank interference causes lower outage probability, and can support
better outage threshold especially in the case of beamforming.
