Yu, Zhiyuan
Zhai, Chao
Liu, Ju
Funding for this research was provided by:
National Nature Science Foundation of China (61371188)
Reaearch Fund for the Doctoral Program of Higher Education (20130131110029)
Open Research Fund of the National Mobile Communications Research Laboratory (2012D10)
Special Funds for Postdoctoral Innovative Projects of Shandong Province (201401013)