Funding for this research was provided by:
National Natural Science Foundation of China (61571273)
National Natural Science Foundation of China (61771292, 31430031-2)
The National Key Research and Development Program of China (2017YFC0803403)
Natural Science Foundation of Shandong Province of China (ZR2016FM29)
the Fundamental Research Funds of Hisense Broadband
Article History
Received: 10 March 2020
Accepted: 15 September 2020
First Online: 19 September 2020