[Yang, Hongming] Changsha Univ Sci & Technol, Coll Elect & Informat Engn, Changsha, Hunan, Peoples R China.
[Chung, C. Y.; Yang, Hongming] Hong Kong Polytech Univ, Dept Elect Engn, Hong Kong, Hong Kong, Peoples R China.
[Zhao, Junhua] Zhejiang Univ, Coll Elect Engn, Hangzhou 310003, Zhejiang, Peoples R China.
[Zhao, Junhua] Univ Newcastle, Ctr Intelligent Elect Networks, Newcastle, NSW 2300, Australia.