Research On UWB Multi-user Detection Technology

Ultra-Wide band (UWB) systems have received wide attention both in the U.S. and in Europe. These systems make use of ultra-short duration (<1ns) pulses which yield a bandwidth on the order of gigahertz signals characterized by extremely low power spectral densities. UWB systems are particularly promising for short-range wireless communications as they potentially combine reduced complexity with low power consumption, low probability of intercept and immunity to multi-path fading. The successful deployment of the UWB technology depends strongly on the development of the multi-user detection techniques. The major purpose if investigating the multi-user detection techniques is to improve bandwidth efficiency, to make the capabilities of systems the largest, to control multiple- access interference.In Ultra-Wideband Communication Systems, multiple-access interference (MAI) is expected to adversely affect system capacity and performance. This paper investigates multi-user detection in multiple—access communications) stems based on ultra--wideband(UWB)technology.