Yuxi Wang

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Injuries that are caused by falls have been regarded as one of the major health threats to the independent living for the elderly. Conventional fall detection systems have various limitations. In this work, we first look for the correlations between different radio signal variations and activities by analyzing radio propagation model. Based on our(More)
Digital matched filter (DMF) is the key component of fast pseudo noise (PN) code synchronization in direct spread-spectrum systems (DSSS), and its realization is a crucial technology of digital DSSP receiver. For long PN code DMF needs a mass of hardware resource, recursive delay chain, folded DMF and time-division multiplexing are used to optimize FPGA(More)
We present a novel approach to structure from motion that can deal with missing data and outliers with an affine camera. We model the corruptions as sparse error. Therefore the structure from motion problem is reduced to the problem of recovering a low-rank matrix from corrupted observations. We first decompose the matrix of trajectories of features into(More)
As ubiquitous environments become increasingly commonplace with newer sensors and forms of computing devices (e.g. wearables, digital tabletops), researchers have continued to design and implement novel interaction possibilities. However, as the number of sensors and devices continues to rise, researchers still face numerous instrumentation, implementation(More)
Due to the rapid growth of the smartphone applications and the fast development of the Wireless Local Area Networks (WLANs), numerous indoor location-based techniques have been proposed during the past several decades. Floorplan, which defines the structure and functionality of a specific indoor environment, becomes a hot topic nowadays. Conventional(More)
Single-pixel cameras based on the concepts of compressed sensing (CS) leverage the inherent structure of images to retrieve them with far fewer measurements and operate efficiently over a significantly broader spectral range than conventional silicon-based cameras. Recently, photonic time-stretch (PTS) technique facilitates the emergence of high-speed(More)
We explore the design of a wearable computing solution for first responders. Wearable devices have many uses, but commercial devices are not suitable for emergency response. First responders face high risk and volatile situations, and wearables possess significant potential to keep responders safe. A lack of understanding exists when designing wearables for(More)
In recent years, the quadrotor unmanned aerial vehicle(UAV) showed a huge advantage in disaster relief activities due to its maneuverability and flexibility. However, the scene of the indoor environment is usually complex and difficult to be detected, the pose control and autonomous navigation for unmanned aerial vehicle meets great difficulties. For the(More)