1. Department of Communication EngineeringCollege of Electronic Science and EngineeringNational University of Defence TechnologyRoad Deya 109#, District KaifuChangshaHunanPeople's Republic of China
2. College of Information Science and Electronic EngineeringZhejiang UniversityHangzhouZhejiangPeople's Republic of China
3. Department of Engineering ScienceUniversity of OxfordParks RoadOxfordOX1 3PJUK
4. The Target Support Brigade of STCJOCCMeibin North Road, Baiyun DistrictGuangzhouGuangdongPeople's Republic of China