Adaptive Diversity Communications: Hybrid diversity techniques are reduced-complexity diversity methods where only a subset of the available diversity branches is utilized. These techniques are applicable to the many different forms in which diversity arises. Our contributions have focused on spatial diversity through multiple antennas or relays, and multipath diversity due to wideband transmission.
Interference Engineering: Developed a mathematical model for coexistence analysis in wireless networks composed of both narrowband (NB) and UWB nodes. Our work accounts for the spatial distribution of interferers, and the propagation characteristics of the wireless environment.