Evaluation of requirements for UWB localization systems in home-entertainment applications

摘要

This paper discusses basic requirements for passive ultra-wideband (UWB) localization systems that aim at home-entertainment applications such as smart audio systems, which can adapt the sound according to the user location, providing an optimum listening experience to the user. We have analyzed over hundred thousand channel impulse responses measured by a real-time UWB channel sounder in different scenarios. Our analyses show that passive localization systems must possess a large real-time dynamic range in order to be capable of detecting a listener. We assume that the listener does not carry any tag and is detected and localized just by electro-magnetic (EM) waves reflected from his body. Such passive localization is demonstrated by a measurement example.