3D Indoor Environment Perception Based on Millimeter Wave Multipath Information

Environmental sensing based on multipath information is emerging and promises to use wireless signals to provide privacy-preserving environmental perception services. However, there are significant challenges in establishing correlations between multipath and 3D environmental features due to the limited accuracy of multipath component (MPC) measurements and the instability of signal propagation. To address these challenges, this paper investigates the problem of indoor 3D environmental perception based on millimeter-wave wireless communication signals and proposes an indoor 3D environmental perception scheme. Specifically, a two-stage mechanism is proposed to identify the characteristics of reflectors and scatterers. Furthermore, high-precision indoor 3D environmental perception is achieved based on a geometric model of multipath propagation. Finally, the performance of the proposed scheme is evaluated through simulation experiments. Compared to existing multi-antenna methods, the proposed scheme offers advantages in terms of cost and computational complexity, while surpassing the performance of multi-antenna solutions.