**Author details**

Wei-Cheng Ye1 and Jia-Ching Wang<sup>2</sup> \*

1 Department of Electrical Engineering, National Sun Yat-sen University, Kaohsiung, Taiwan

2 Department of Computer Science and Information Engineering, National Central University, Taoyuan, Taiwan

\*Address all correspondence to: jcw@csie.ncu.edu.tw

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