About the Authors

Zirui Xu

Affiliation School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China

Wei Yang

wyang@bjtu.edu.cn

Affiliation School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China

Kaiming You

Affiliation School of Electronic and Information Engineering, Beijing Jiaotong University, Beijing, China

Wei Li

Affiliation School of Mechanical, Electronic and Control Engineering, Beijing Jiaotong University, Beijing, China

Young-il Kim

Affiliation Electronics and Telecommunication Research Institute, Daejeon, Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceptualization: ZX. Data curation: ZX. Formal analysis: ZX WL. Funding acquisition: WY. Investigation: ZX KY. Methodology: ZX WY YK. Resources: ZX WY. Software: ZX WL. Supervision: WY. Validation: WY ZX. Visualization: ZX WY. Writing – original draft: ZX WY. Writing – review & editing: ZX WY.