[Zhang, Jin; Yao, Wei; Yu, Fei; Liu, Jiapei] Changsha Univ Sci & Technol, Sch Comp & Commun Engn, Changsha 410114, Peoples R China.
[Yao, Wei] Hunan Normal Univ, Sch Math & Stat, Key Lab Comp & Stochast Math, Minist Educ, Changsha 410081, Hunan, Peoples R China.
[Yao, Wei] Zhejiang Univ, State Key Lab Ind Control Technol, Hangzhou, Peoples R China.
[Sun, Yichuang] Univ Hertfordshire, Sch Engn & Comp Sci, Hatfield AL10 9AB, England.
[Cui, Li] Hunan Univ Sci & Technol, Sch Informat & Elect Engn, Xiangtan 411201, Peoples R China.