STUDYING TIME REVERSAL TECHNIQUE AND ANALYSING THE CAPACITY OF ULTRA WIDEBAND SYSTEMS
Abstract
802.11n wireless technology is flourishing in recent years but it will not meet the strong growth of the service types in the next few years. Ultra Wideband (UWB) technology is seen as an inevitable trend in the development. It is envisioned for future wireless high data rate transmission. A MU-UWB (Multiple User - Ultra Wideband) system with multiple antennas takes advantage of the rich scattering environment to increase the data rate. And furthermore, given rich multipath, time reversal (TR) uses scatterers to create space and time focalization at a target point by the coherent addition of all scattered contributions at that point.
This paper descries two mathematical channel models: MU-SISO-UWB-TR (Multiple User - Single Input Single Output - Ultral Wideband - Time Riversal) and MU-MIMO-UWB-TR (Multiple User - Multiple Input Multiple Output - Ultral Wideband - Time Riversal). Based on the models, we evaluate the capacity of MU-UWB channel systems.
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