Recent developments on DFWS have shown that wireless signals can be utilized not only as a communication medium to transmit data, but also as an enabling tool for realizing non-intrusive device-free sensing. DFWS has many potential applications, for example, human detection and localization, human activity and gesture recognition, surveillance, elder or patient monitoring, emergency rescue, and so on. With the development and maturity of DFWS, we believe it will eventually empower traditional wireless networks with the augmented ability to sense the surrounding environment, and evolve wireless communication networks into intelligent sensing networks that could sense human-scale context information within the deployment area of the network. The research field of DFWS has emerged quickly recently. This article tries to provide an integrated picture of this emerging field and hopefully inspire future research. Specifically, we present the working principle and system architecture of the DFWS system, review its potential applications, and discuss research challenges and opportunities.

中文翻译：

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无设备的无线传感：挑战，机遇和应用

DFWS的最新发展表明，无线信号不仅可以用作传输数据的通信介质，而且还可以用作实现非介入式无设备感测的使能工具。DFWS具有许多潜在的应用程序，例如，人类检测和定位，人类活动和手势识别，监视，老人或患者监视，紧急救援等。随着DFWS的发展和成熟，我们相信它最终将使传统无线网络具有增强的感知周围环境的能力，并将无线通信网络发展为智能感知网络，从而可以感知网络部署区域内的人类规模上下文信息。网络。DFWS的研究领域最近迅速兴起。本文试图提供有关这一新兴领域的完整图片，并希望能激发未来的研究。具体来说，我们介绍了DFWS系统的工作原理和系统架构，回顾了其潜在的应用，并讨论了研究挑战和机遇。