Joe Madden has worked in mobile communications technology for 22 years. Since 2002, he has managed a mobile consulting partnership known as Mobile Experts LLC, providing market research focused on radio access networks and handsets. He has recently published research on multimode cellular base stations, Small Cells, Heterogeneous Networks, Adaptive Antenna Systems, and MIMO. Before diving into market research, Mr. Madden successfully brought two startup companies to market, related to filter and amplifier technologies for 2G and 3G base stations. Mr. Madden holds a Bachelor's degree in Physics, cum laude, from UCLA.