[Zhao, Yue] Hubei Univ, Sch Comp Sci & Informat Engn, Wuhan 430062, Peoples R China.
[Peng, Jiangtao] Hubei Univ, Fac Math & Stat, Hubei Key Lab Appl Math, Wuhan 430062, Peoples R China.
[Wei, Yantao] Cent China Normal Univ, Sch Educ Informat Technol, Wuhan 430079, Peoples R China.
[Peng, Qinmu] Huazhong Univ Sci & Technol, Sch Elect Informat & Commun, Wuhan 430074, Peoples R China.
[Mou, Yi] Wuhan Polytech Univ, Sch Elect & Elect Engn, Wuhan 430023, Peoples R China.