[1] Tsinghua Univ, Tsinghua Space Ctr, Beijing 100084, Peoples R China
[2] Univ Avignon, Comp Sci, F-84911 Avignon, France
[3] Muroran Inst Technol, Dept Sci & Informat, Muroran, Hokkaido 0500071, Japan
[4] Univ Manitoba, Dept Elect & Comp Engn, Winnipeg, MB R3T 5V6, Canada