Towards Precise Indoor RF Localization

Precise indoor localization of wireless nodes remains a challenge today. While there are radio-frequency (RF) methods that offer significant advantages, the balance between accuracy, range, and cost is suboptimal for many applications. Radio interferometry has been shown to be effective outdoors, however, its applicability indoors has not been demonstrated mainly due to its sensitivity to multipath. This paper presents a roadmap outlining how the method can be enhanced to advance the state-of-the-art in indoor RF localization.