1. Nanjing Smart Constellation Information Technology Co., Ltd., Nanjing 210007, China
2. College of Communication Engineering, Army Engineering University of PLA, Nanjing 210007, China
3. Changzhou Huawei Electronic Co., Ltd., Changzhou 213144, China
4. College of Integrated Circuit Science and Engineering, Nanjing University of Posts and Telecommunications, Nanjing 210023, China