Man-On Pun Visa Koivunen H. Vincent Poor SINR Analysis of Opportunistic MIMO-SDMA Downlink Systems with Linear Combining. 3720-3724 2008 ICC http://dx.doi.org/10.1109/ICC.2008.699 conf/icc/2008 db/conf/icc/icc2008.html#PunKP08a