Mohammad Torabi Wessam Ajib David Haccoun Multiuser Scheduling for MIMO-OFDM Systems with Continuous-Rate Adaptive Modulation. 946-951 2008 WCNC http://dx.doi.org/10.1109/WCNC.2008.172 conf/wcnc/2008 db/conf/wcnc/wcnc2008.html#TorabiAH08