Wireless channel modeling refers to the mathematical and computational representation of how radio signals propagate through physical environments, capturing phenomena such as multipath propagation, reflection, scattering, diffraction, and attenuation as signals travel between transmitter and receiver. Accurate channel models are foundational to WiFi sensing and CSI-based research because they determine how environmental changes — such as human movement or object displacement — manifest as measurable perturbations in signal features like amplitude, phase, and angle of arrival. Key variants range from traditional statistical and ray-tracing models to modern data-driven approaches, including learnable spatial representations such as the Radio Radiance Field, which extend channel modeling beyond point-to-point links to capture the full spatial distribution and directionality of radio energy across an environment.
Source Papers
- Doppler Effect: Analyses and Applications in Wireless Sensing and Communications ↗ — Doppler Effect: Analyses and Applications in Wireless Sensin
- Radio Radiance Field: The New Frontier of Spatial Wireless Channel Representation ↗ — Radio Radiance Field: The New Frontier of Spatial Wireless C
- WiFi Sensing with Channel State Information ↗ — WiFi Sensing with Channel State Information