Officially published monographs and 14 postgraduate textbooks (such as communication network security-theory and technology, error-correcting code technology in computers, personal communication, error-correcting cryptography theory, voice signal processing, etc. ). Outstanding scientific research achievements include: broadband wireless IP and mobile IP experimental system, practical ISDN multimedia communication terminal, ATM broadband integrated access system, high-efficiency image compression coding and high-speed image real-time compression coding technology, short-wave adaptive communication system, multiple security encryption algorithm, new transmission system COFDM for HDTV, etc.
Representative research results 1
High-speed switching structure and system of high-performance broadband information network
The main contents of the research results:
1. Participated in the overall research of the 863 major project "China High-speed Information Demonstration Network", with Professor Li Hongbin as the deputy head of the overall group, which won the second prize of the National Science and Technology Progress Award in 2002 (ranked second).
2. Three 863 projects, namely "Research on New Label Switching System", "Research on Key Technologies of T-bit Router Switching Network" and "Research on IP over DWDM Technology System Tracking", have been completed, and the acceptance result is Ab.
3. Obtained four national invention patents.
4. Published 94 papers in important journals at home and abroad, 12 papers in important international conferences, including SCI papers 12 papers and1papers in important foreign journals (including 7 IEEE journals); Cited 12 times, including 3 papers in IEEE Trans journal, 2 papers in IEEE communication letters 1 time, and 2 papers in Optic Express.
Mainly completed by:
Liu Zengji, Qiu Zhiliang, Zhang Bing, Qin Hao, Yao Mingyun, John Yang, etc.
Major scientific and technological innovations and contributions:
He made important contributions to the overall research of the 863 major project "China High-speed Information Demonstration Network" and won the second prize of the National Science and Technology Progress Award in 2002. A new label switching system based on area code and a new T-bit router switching structure are proposed, which have been authorized by four national invention patents and won the second prize of Shaanxi Science and Technology in 2006.
Representative research results II
Broadband wireless mobile ad hoc network
The main contents of the research results:
1. Six major projects of the National 863 Plan: "Development of Wireless Mobile Ad Hoc Internet Technology and Experimental System" and the project jointly funded by the National Natural Science Foundation of China and Microsoft Research Asia: "Large-scale Broadband Wireless Adaptive Ad Hoc Network" have been completed.
2. Won the first prize of Shaanxi Science and Technology 1 and the third prize of national defense science and technology 1.
3. Published 122 papers in important journals at home and abroad and xx papers in international academic conferences (SCI: 20, EI: 99, ISTP: 39). Among them, the paper "Improved IEEE 802. 1 1 MAC for Performance Evaluation of Multi-channel and Multi-hop ad hoc Networks" (AINA 2003) has been cited by international publications and conferences for 24 times. The article Capacity Evaluation of Multi-channel and Multi-hop ad hoc Networks (ICP WC' 2002) was cited by international publications and conferences 13 times.
4. Formulate six national standards.
Mainly completed by:
, Yang Jiawei, Chen, Li Bo, Zhang, etc.
Major scientific and technological innovations and contributions:
Main contribution 1: leading the formulation of WLAN standards and promoting the industrialization of WLAN.
Main contribution 2: Explore the construction method of XX mobile ad hoc network, which is the system of XXXX wireless Internet and the next generation large-scale (hundreds to thousands) system.
Broadband tactical wireless Internet system provides important technical support.
Representative research results 3
Channel coding and broadband wireless COFDM transmission technology close to Shannon capacity limit
The main contents of the research results:
1. Completed the research of five national natural science foundation projects. They are: theoretical research on low-density parity-check coding based on graph model, research on concatenated space-time codes in mobile communication system, research on several key problems in iterative soft decoding, key technologies in broadband COFDM modulation and key technologies in wireless multiple access transmission based on COFDM. Completed the research of "high-speed digital modulation and coding technology-high-speed TCM coding and decoding technology".
2. Won the second prize of National Science and Technology Progress Award 1.
3.4 authorized invention patents.
4. 1 monograph.
5. Published 65 papers in important journals at home and abroad, including 26 SCI papers and 49 EI papers.
Mainly completed by:
Ge Jianhua, Bai Baoming, Mars, Ren, Sun, Li Bingbing, Zhao and Guo.
Major scientific and technological innovations and contributions:
The construction methods of Turbo-TCM and LDPC codes that can approach the Shannon capacity limit are proposed, and a new design method of space-time concatenated codes and space-time block codes is proposed, which breaks through the key technology of digital TV terrestrial broadcast COFDM transmission system. Obtained 4 national invention patents. It has made important contributions to the development of key technologies and equipment of digital HDTV system, and won the second prize of national scientific and technological progress in 2003.
Main features and innovations:
2 invention authorized patents
"Key Technologies and Equipment of Digital HDTV System" won the second prize of National Science and Technology Progress Award in 2003, 1.
Representative research results 4
Efficient real-time image compression coding technology
The main contents of the research results:
1. Two national natural science foundation projects, 1 863 project and national key project "compression and coding of lunar exploration satellite images" have been completed.
2. Obtained 3 national invention patents.
3. Won 2 ministerial (provincial) prizes.
4. This achievement has been applied to the real-time image compression system of lunar exploration satellite, XX-6 satellite and HJ satellite, as well as the real-time image compression coding system of airborne and the image compression transmission system of the small satellite accompanying Shenzhou VII spacecraft.
Mainly completed by:
Wu, Chang Yilin, Lu Chaoyang, Li, Xiao Song, Liu Kai, Du Jianchao, Yan and others.
Major scientific and technological innovation contributions:
An efficient compression algorithm for interference multi-spectral images and adaptive error-tolerant video image compression coding are proposed, which have been applied to real-time image compression systems of lunar exploration satellites, XX-6 satellites, HJ satellites and other models, real-time compression coding systems of airborne reconnaissance images and image compression transmission systems of small satellites accompanying Shenzhou VII spacecraft.
Representative research results 5
New Cryptosystem and WAPI Security Protocol
The main contents of the research results:
Important innovations have been made in new cryptographic theory and algorithm, WAPI security technology of broadband wireless network and so on. In 2005, he won the second prize of National Technological Invention and the second prize of Cryptography Technology Progress of National Cryptography Administration in 2005, each with 1, and published 56 academic papers (including 33 SCI and 0/06 EI/kloc) in important journals at home and abroad.
Mainly completed by:
Wang Yumin, Xiao Guozhen, Hu Yupu, Zhang Bianling, Huang Zhenhai, Tie Manxia and others.
Major scientific and technological innovations and contributions:
A high-strength cryptographic algorithm and a fast algorithm with k- error complexity are proposed. Invented the general security access infrastructure of IP network-WAPI, which is the national standard of wireless local area network series GB/KOOC-0/5629./KOOC-0//KOOC-0//KOOC-0/0/KOOC-0//KOOC-0. This achievement was rated as one of the top ten technological inventions of the Ministry of Information Industry in 2003, and won the second prize of national technological invention in 2005.
Main features and innovations:
WAPI is a kind of network security access infrastructure, which is usually suitable for wired and wireless IP access networks. The WAPI security protocol applied to WLAN based on WAPI architecture has solved the serious security problems existing in the international standard of WLAN for the first time at home and abroad. National standard GB15629.11011102/104. Gb15629.11-2003/XG1-2006 (revised)
Awards: The second prize of the National Technological Invention Award.