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基于無線信道參數(shù)的物理層安全密鑰容量

王旭,  金梁,  宋華偉,  黃開枝

王旭, 金梁, 宋華偉, 黃開枝. 基于無線信道參數(shù)的物理層安全密鑰容量[J]. 電子與信息學(xué)報, 2016, 38(10): 2612-2618. doi: 10.11999/JEIT160032
引用本文: 王旭, 金梁, 宋華偉, 黃開枝. 基于無線信道參數(shù)的物理層安全密鑰容量[J]. 電子與信息學(xué)報, 2016, 38(10): 2612-2618. doi: 10.11999/JEIT160032
WANG Xu, JIN Liang, SONG Huawei, HUANG Kaizhi. Physical Layer Secret Key Capacity Based on Wireless Channel Parameters[J]. Journal of Electronics & Information Technology, 2016, 38(10): 2612-2618. doi: 10.11999/JEIT160032
Citation: WANG Xu, JIN Liang, SONG Huawei, HUANG Kaizhi. Physical Layer Secret Key Capacity Based on Wireless Channel Parameters[J]. Journal of Electronics & Information Technology, 2016, 38(10): 2612-2618. doi: 10.11999/JEIT160032

基于無線信道參數(shù)的物理層安全密鑰容量

doi: 10.11999/JEIT160032
基金項目: 

國家863計劃項目(2015AA01A708)，國家自然科學(xué)基金(61171108, 61471396)

Physical Layer Secret Key Capacity Based on Wireless Channel Parameters

Funds: 

The National 863 Program of China (2015AA01A708), The National Natural Science Foundation of China (61171108, 61471396)

  • 摘要: 利用無線信道參數(shù)提取物理層安全密鑰時，密鑰容量受加性噪聲、信道測量時差、終端移動速度、采樣周期和采樣點數(shù)等因素影響。針對這一問題，該文在均勻散射環(huán)境中利用單輸入單輸出無線信道定量分析密鑰容量，推導(dǎo)了密鑰容量的閉式解以確定最佳采樣周期的約束條件。仿真分析表明該結(jié)論同樣適用于非均勻散射環(huán)境，同時驗證將物理層密鑰提取技術(shù)應(yīng)用于無線通信系統(tǒng)的可行性。
    Abstract: Physical layer secret key capacity is affected by such factors as additive noise, the time difference of channel sampling, terminals moving speed, sampling period, and the number of samples, whose effects on the physical layer secret key capacity are analyzed quantitatively using the single-input single-output wireless channel over the uniform scattering environment. Specifically, a closed-form solution to the secret key capacity is derived to determine the constraints on the optimal sampling period. Analysis and simulation results reveal that the results can also be applied to the nonuniform scattering environment. Furthermore, the feasibility to utilize the physical layer secret key extraction techniques in the mobile communication systems is verified.
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出版歷程
  • 收稿日期:  2016-01-11
  • 修回日期:  2016-06-06
  • 刊出日期:  2016-10-19

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