@conference {czink09-pimrc, title = {Spatial Separation of Multi-User MIMO Channels}, booktitle = {20th Personal, Indoor and Mobile Radio Communications Symposium 2009 (PIMRC 09)}, year = {2009}, month = {September}, address = {Tokyo, Japan}, author = {Czink, Nicolai and Bandemer, Bernd and Vazquez-Vilar, Gonzalo and Jalloul, Louay and Oestges, Claude and Paulraj, Arogyaswami} }