Multiuser MIMO: Principle, Performance in Measured Channels and Applicable Service.
Gerhard BauchPedro TejeraChristian GuthyWolfgang UtschickJosef A. NossekMarkus HerdinJorgen NielsenJørgen Bach AndersenEckehard G. SteinbachShoaib KhanPublished in: VTC Spring (2007)