About the Authors

Qingguo Wei

wqg07@163.com

Affiliation Dept. of Electronic Engineering, School of Information Engineering, Nanchang University, Nanchang, 330029, China

Siwei Feng

Affiliation Dept. of Electronic Engineering, School of Information Engineering, Nanchang University, Nanchang, 330029, China

Zongwu Lu

Affiliation Dept. of Electronic Engineering, School of Information Engineering, Nanchang University, Nanchang, 330029, China

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: QW SF ZL. Performed the experiments: QW SF ZL. Analyzed the data: QW SF. Wrote the paper: QW SF.