Professor Zhu Jie received a doctor's degree in engineering from Shanghai Jiaotong University, majoring in communication and information systems, and was the winner of the Outstanding Young Teachers Award in Shanghai universities. 1999 Up to now, professor of electronic engineering department of Shanghai Jiaotong University, doctoral supervisor of electronic science and technology. He is currently the director of the Joint Laboratory of Communication and Network of Bell Laboratory of Shanghai Jiaotong University and the deputy director of the Institute of Signal Processing and Systems of Shanghai Jiaotong University. 65438-0997, visiting researcher at Bell Laboratories in New Jersey, USA, and visiting professor at Dresden University of Technology in Germany in 2000. In 2007, he was a visiting professor at Gwangju Institute of Science and Technology in Korea, and in 2008, he was a visiting professor at Waseda University in Japan. He is a member of IET Branch of Chinese Institute of Electronics, a senior member, and the president of Electronic Circuit Research Association of universities in East China. Won many excellent teaching materials and enterprise awards from the Ministry of Electronic Industry 10. There are more than 50 projects leading the research group, such as 973 Project, National Natural Science Foundation of China, Key Basic Research of Shanghai Science and Technology Commission, China Aerospace Support Fund, Shanghai Aerospace Fund, State Oceanic Administration and international cooperation. Published in Physical Review, Chaos, Soliton &; More than 20 academic papers 120 have been published in important academic journals and international conferences at home and abroad, such as Fractal, China Physics, Electronics Express, etc., including more than 30 SCI papers, more than 60 EI papers, 8 invention patents and 2 teaching materials. He has supervised more than 80 master students, 15 doctoral students and 1 postdoctoral students. Master students 16, 8 doctoral students, postdoctoral students 1 person. At present, the main research directions are: speech signal processing (including speech recognition, speech coding, speech synthesis, audio digital watermarking), signal processing technology in communication system, multimedia communication technology, realization and algorithm research of high-speed signal processing system, automatic test system, etc. Doctoral entrance examination subjects: ①11English ②2208 Introduction to Electronic Science and Technology ③33 19 Circuits and Systems (signal processing direction).