Study on Secret Key Generation Based on Frequency Domain Response of Channel in Single Carrier Frequency Domain Equalization Systems
KONG Yuanyuan YANG Zhen LÜ Bin TIAN Feng
(Key Laboratory of Broadband Wireless Communication and Sensor Network Technology, Ministry of Education,Nanjing University of Posts and Telecommunications, Nanjing 210003, China)
Abstract：A secret key generation scheme is proposed in a Single Carrier Frequency Domain Equalization system (SC-FDE). The scheme uses the Channel Frequency Response (CFR) to generate the secret keys, which is termed as CFR-Key. The principle of the CFR-Key scheme is introduced and formulate the secret key capacity is derived based on mutual information theory. The Signal-Noise Ratio (SNR) is proved that is the unique factor and affects the quantization levels. The optimum quantization levels is designed to achieve the best key generation rate when SNR is given. Simulation results show that comparing with the secret key generation scheme based on the Channel Impulse Response (CIR-Key), the proposed scheme can significantly improve the secret key capacity.
孔媛媛,杨震,吕斌,田峰. 单载波频域均衡系统中基于信道频域响应的密钥生成机制研究[J]. 电子与信息学报, 2018, 40(5): 1017-1023.
KONG Yuanyuan, YANG Zhen, Lü Bin, TIAN Feng. Study on Secret Key Generation Based on Frequency Domain Response of Channel in Single Carrier Frequency Domain Equalization Systems. JEIT, 2018, 40(5): 1017-1023.
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