1. School of Science, Guangxi University for Nationalities, No. 188, East Daxue Road, Nanning, Guangxi 530006, China
2. School of Information Science and Engineering, Guangxi University for Nationalities, No. 188, East Daxue Road, Nanning, Guangxi 530006, China
3. Guangxi Key Laboratory of Hybrid Computation and IC Design Analysis, No. 188, East Daxue Road, Nanning, Guangxi 530006, China