1.College of Information Engineering, Sanming University, Sanming, Fujian 365004, China
2.College of Electrical and Information Engineering, Northeast Petroleum University, Daqing, Heilongjiang 163318, China
3. College of Education and Music, Sanming University, Sanming, Fujian 365004, China
4. College of Information and Electrical Engineering, Heilongjiang Bayi Agricultural University, Daqing, Heilongjiang 163319, China