[Zhou, Feng; Zeng, Xiaoyong; Qin, Yemei; Xie, Wenbiao; Peng, Hui] Cent S Univ, Sch Informat Sci & Engn, Changsha 410083, Hunan, Peoples R China.
[Wu, Jun; Zhou, Feng; Zeng, Xiaoyong; Qin, Yemei; Xie, Wenbiao; Peng, Hui] Collaborat Innovat Ctr Resource Conserving & Envi, Changsha 410083, Hunan, Peoples R China.
[Wu, Jun] Changsha Univ Sci & Technol, Sch Elect & Informat Engn, Changsha 410004, Hunan, Peoples R China.