Zhuo-qian Liang

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This article proposes a lightweight biometric sensing system using ubiquitous narrowband radio frequency (RF) links for path-dependent walker classification. The fluctuated received signal strength (RSS) sequence generated by human motion is used for feature representation. To capture the most discriminative characteristics of individuals, a three-layer RF(More)
This article presents a preliminary research on radio tomographic imaging (RTI) based approach for three-dimensional static body posture sensing. A wireless network organized by a multi-level of radio frequency (RF) sensor array is introduced for posture sensing covering a three-dimensional space. It is assumed the statistical shadowing losses on the(More)
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