1. Guangdong New Generation Communication and Network Innovative Institute (GDCNi), Guangzhou, China
2. Electric Power Research Institute of CSG, Guangzhou, China
3. Nanjing Forestry University, Nanjing, China
4. University of Science and Technology of China, China
5. Guangzhou University, Guangzhou, China
6. Shantou University, Shantou, China
7. Tsinghua University, Beijing, China