Liang Sun Matthew R. McKay Shi Jin MIMO Multichannel Beamforming: Analysis in the Presence of Rayleigh Fading, Unbalanced Interference and Noise. 4452-4456 2008 GLOBECOM http://dx.doi.org/10.1109/GLOCOM.2008.ECP.854 conf/globecom/2008 db/conf/globecom/globecom2008.html#SunMJ08