Wireless Sensing With Deep Spectrogram Network and Primitive Based Autoregressive Hybrid Channel Model

• URL: http://arxiv.org/abs/2104.10378v1
• Date: Wed, 21 Apr 2021 06:33:01 GMT
• Title: Wireless Sensing With Deep Spectrogram Network and Primitive Based Autoregressive Hybrid Channel Model
• Authors: Guoliang Li, Shuai Wang, Jie Li, Rui Wang, Xiaohui Peng, and Tony Xiao Han
• Abstract summary: Human motion recognition (HMR) based on wireless sensing is a low-cost technique for scene understanding. Current HMR systems adopt support vector machines (SVMs) and convolutional neural networks (CNNs) to classify radar signals. This paper proposes a deep spectrogram network (DSN) by leveraging the residual mapping technique to enhance the HMR performance.
• Score: 20.670058030653458
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: Human motion recognition (HMR) based on wireless sensing is a low-cost technique for scene understanding. Current HMR systems adopt support vector machines (SVMs) and convolutional neural networks (CNNs) to classify radar signals. However, whether a deeper learning model could improve the system performance is currently not known. On the other hand, training a machine learning model requires a large dataset, but data gathering from experiment is cost-expensive and time-consuming. Although wireless channel models can be adopted for dataset generation, current channel models are mostly designed for communication rather than sensing. To address the above problems, this paper proposes a deep spectrogram network (DSN) by leveraging the residual mapping technique to enhance the HMR performance. Furthermore, a primitive based autoregressive hybrid (PBAH) channel model is developed, which facilitates efficient training and testing dataset generation for HMR in a virtual environment. Experimental results demonstrate that the proposed PBAH channel model matches the actual experimental data very well and the proposed DSN achieves significantly smaller recognition error than that of CNN.

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