Digital Shielding for Cross-Domain Wi-Fi Signal Adaptation using Relativistic Average Generative Adversarial Network

Many of these challenges are cross-cutting across various fields. While current RGB devices remain the most suitable for spatial resolution, image quality, data richness, and noise management, they are inherently prone to the reported limitations. Consequently, recent efforts have been intensified to develop technologies capable of replacing or complementing current visual technologies, aiming to overcome, at least in part, these issues in visual tasks. Wi-Fi sensing is an evolving technology that has already proven to be highly effective in a wide range of applications over the past two decades 30-33, from smart home automation and security to healthcare monitoring and human-computer interaction. In recent years, Wi-Fi devices have been used not only for current monitoring activities but also as a type of "vision" system capable of capturing and shaping significant information to accomplish computer vision tasks through deep analysis of propagated signal spectra. For example, in Avola et al. 34, the authors use Wi-Fi signal information that has passed through various subjects to develop a person re-identification system capable of providing more robust and reliable biometric signatures than visual ones, which are dependent on factors like changes in lighting or clothing. Meanwhile, Wang et al. 35 utilize Wi-Fi signals to reconstruct the skeletons of individuals, on which classical methods can then be applied to determine human body poses and movements. While there is potential to lose valuable information, such as the texture and colors that define the surface of objects, Wi-Fi sensing offers extraordinary capabilities, including analyzing the interior of solid objects, overcoming obstacles to mitigate occlusion issues, and providing stricter privacy constraints. The promising future of Wi-Fi applications in various domains is further supported by the recent establishment of the IEEE 802.11bf standard 36, which formalizes and standardizes Wi-Fi sensing capabilities within the existing IEEE 802.11