Funding for this research was provided by:
National Natural Science Foundation of China (61227801, 61629101)
Huawei Communications Technology Lab, China, and the Open Research Foundation of Xi’an Jiaotong University, China (sklms2015015)
ORCID
Yun-zheng TAO: http://orcid.org/0000-0002-8734-2729
Publication History
Received: 2017-01-23
Accepted: 2017-04-20
Crosschecked: 2018-03-08
Content Type
: Article
Copyright
: © Zhejiang University and Springer-Verlag GmbH Germany, part of Springer Nature 2018