[Xiao, Weichu; Liu, Hongli] Hunan Univ, Coll Elect & Informat Engn, Changsha, Hunan, Peoples R China.
[Xie, Guoqi; Xie, GQ; Li, Renfa] Hunan Univ, Coll Informat Sci & Engn, Changsha, Hunan, Peoples R China.
[Xiao, Weichu] Hunan City Univ, Coll Informat & Elect Engn, Yiyang, Hunan, Peoples R China.
[Chen, Weihong] Hunan Univ Finance & Econ, Coll Informat Technol & Management, Changsha, Hunan, Peoples R China.