1. School of Internet of Things Engineering, Jiangnan University, Wuxi, China
2. School of Internet of Things Technology and Artificial Intelligence, Wuxi Vocational Institute of Commerce, Wuxi, China
3. Department of Electronic Engineering, Beijing National Research Center for Information Science and Technology, Tsinghua University, Beijing, China
4. Qualcomm, San Jose, CA, USA
5. School of Engineering, Hong Kong University of Science and Technology (HKUST), Hong Kong