A wireless secret key generation method based on Chinese remainder theorem in FDD systems

作     者：WANG WenJie 1,JIANG HongYan 1 ,XIA XiangGen 2,3 ,MU PengCheng 1 & YIN QinYe 1 1 Ministry of Education Key Lab for Intelligent Networks and Network Security,Xi’an Jiaotong University,Xi’an 710049,China 2 Electrical and Computer Engineering,University of Delaware,Newark,DE 19716,USA 3 Chonbuk National University,Jeonju,South Korea 

作者机构：1. Ministry of Education Key Lab for Intelligent Networks and Network Security Xi’an Jiaotong University Xi’an 710049 China2. Electrical and Computer Engineering University of Delaware Newark DE 19716 USA3. Chonbuk National University Jeonju South Korea 

出 版 物：《Science China(Information Sciences)》 (中国科学:信息科学(英文版))

年 卷 期：2012年第55卷第7期

页      面：1605-1616页

核心收录：

学科分类：07[理学] 070104[理学-应用数学] 0701[理学-数学] 

基　　金：supported in part by National Natural Science Foundation of China (Grant No. 61071125) Foundation for Innovative Research Groups of the National Natural Science Foundation of China (Grant No.60921003) Xia’s work was supported in part by the National Science Foundation (NSF) Grant No. CCF-0964500) Air Force Office of Scientific Research (AFOSR) (Grant No. FA9550-12-1-0055) World Class University (WCU) Program,National Research Foundation,Korea 

主　　题：wireless communication security secret key generation FDD CRT angle and delay estimation 

摘      要：The wireless physical channel parameters are recently used to provide secret ***,the key generation usually suffers from the quantization errors due to the noise,which decreases the key agreement ratio (KAR) between authorized *** existing approaches achieve high KAR by discarding some channel parameters which may lower the key generation efficiency and therefore lower the encryption *** the frequency-division duplex (FDD) systems,the number of reciprocal parameters,such as the multipath angle and delay,is *** how to find a quantization method with high KAR and encryption strength is one of the major problems for secret key generation in FDD *** this paper,a robust quantization scheme based on grouping and shifting is proposed,in which all the available parameters are used for key *** addition,a key mapping method with error correction based on Chinese remainder theorem (CRT) is proposed to further improve the KAR *** demonstrate the effectiveness of the proposed method.