Wang, Xueli
Zhang, Yufeng
Zhang, Hongxin
Wei, Xiaofeng
Wang, Guangyuan
Funding for this research was provided by:
National Natural Science Foundation of China (11471053)
Laboratory of University Wireless Communications (2015103)
Natural Science Foundation of Beijing Municipality (3182028)
Article History
Received: 6 September 2018
Accepted: 27 August 2019
First Online: 18 September 2019
Competing interests
: The authors declare that they have no competing interests.