[Deng, Feng;Li, Xinran] Hunan Univ, Coll Elect & Informat Engn, Changsha, Hunan, Peoples R China.^[Deng, Feng;Zeng, Xiangjun;Yang, Lan] Changsha Univ Sci & Technol, Coll Elect & Informat Engn, Changsha, Hunan, Peoples R China.^[Zhao, Donghong] China Wuzhou Engn Grp Co Ltd, Beijing, Peoples R China.