Funding for this research was provided by:
the National Key R&D Program of China (2018YFC0705406)
the National Natural Science Foundation of China (51778223)
the Major Program of Science and Technology of Hunan Province (2017SK1010)
the Major Program of Science and Technology of Guangdong Provincial Communications Department (科技-2017-01-002)
the Science and Technology Project of Guangdong Provincial Communications Department (2013-02-036)
the Hunan Provincial Innovation Foundation for Postgraduate (CX2017B119)
Article History
Received: 12 June 2019
Accepted: 25 November 2019
First Online: 21 January 2020
Competing interests
: No competing interests exits in the submission of this manuscript, and manuscript is approved by all authors for publication. The author declare that the work described was original research that has not been published previously, and not under consideration for publication elsewhere, in whole or in part.