中文摘要：

Corresponding author. Tel.： ＋86-10-81414980. E-mail address. linqiang@ee.buaa.edu.cn LIN Qiang Born in 1973, he received B.S. in Electronic Engineering Department from Air Force College of Engineering in 1995. He is directly working towards the Ph.D. degree in School of Electronic and Information Enlzineering at Beijing University of Aeronautics and Astronautics, Beijing, China. His major research fields are avionics, digital communication. E-mail： linqiang@ee, buaa.edu.cn XIONG Hua-gang Born in 1961, he is a professor in School of Electronic and Information Engineering at Beijing University of Aeronautics and Astronautics, Beijing, China. His major research fields are avionics, digital communication. ZHANG Qi-shan Born in 1936, he is a professor in School of Electronic and Information Engineering at Beijing University of Aeronautics and Astronautics, Beijing, China. His major research fields are trans- fers and processing of information, telecomtrol and telecommunication.