About the Authors

Hung-Cuong Trinh

Affiliation School of Electrical Engineering, University of Ulsan, Ulsan, Republic of Korea

Duc-Hau Le

Affiliation School of Computer Science and Engineering, Water Resources University, Hanoi, Vietnam

Yung-Keun Kwon

kwonyk@ulsan.ac.kr

Affiliation School of Electrical Engineering, University of Ulsan, Ulsan, Republic of Korea

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YKK. Performed the experiments: HCT. Analyzed the data: HCT DHL. Contributed reagents/materials/analysis tools: HCT DHL. Contributed to the writing of the manuscript: HCT YKK. Developed the software: HCT.