Jeffrey G. Andrews is an assistant professor at The University of Texas at Austin. He has developed CDMA systems for Qualcomm and consulted with many organizations including the WiMAX Forum, Microsoft, and NASA. He is a recipient of the NSF CAREER Award and holds a Ph.D. from Stanford University.Arunabha Ghosh, a principal member of technical staff at AT&T Labs, specializes in wireless communication theory and signal processing and has been involved in standardization efforts in the WiMAX Forum. He holds a Ph.D. from the University of Illinois at Urbana-Champaign.Rias Muhamed is a lead member of technical staff at AT&T Labs. He has led several research and technology assessment projects in fixed wireless broadband at AT&T Labs. He is a senior member of the IEEE and holds an M.S. from Virginia Tech.