基于用户位置变化的密钥生成速率
发布时间：2018-12-26 15:41
【摘要】：在传播环境不发生改变时,唯一能带来不确定性的因素是用户位置的不断变化。该文研究了用户位置移动范围与无线密钥生成速率上界的关系。针对两种极端的静态环境场景,分析了其密钥生成速率上界。结果表明:在简单的信道环境中,信道状态分布并不是Gauss分布,此时的密钥生成速率上界仅受到用户位置改变的影响。该文分析了在简单的单反射面场景下密钥生成速率上界与信道的估计误差之间的关系。通过数值仿真得到了多散射点场景下不同信道估计误差下的密钥生成速率上界,结果表明在合法用户具有较高信噪比情况下,用户位置移动范围在1个波长左右即可获得较高的密钥生成速率上界。
[Abstract]:When the communication environment does not change, the only uncertain factor is the changing location of the user. In this paper, the relationship between the range of user location and the upper bound of wireless key generation rate is studied. For two extreme static environment scenarios, the upper bound of key generation rate is analyzed. The results show that in a simple channel environment, the channel state distribution is not Gauss distribution, and the upper bound of the key generation rate is only affected by the user location change. This paper analyzes the relationship between the upper bound of key generation rate and the channel estimation error in a simple single reflector scenario. Through numerical simulation, the upper bound of key generation rate under different channel estimation errors in multi-scattering scene is obtained. The results show that when the legitimate user has a high signal-to-noise ratio (SNR), the upper bound of key generation rate under different channel estimation errors is obtained. A higher upper bound of key generation rate can be obtained when the user's position moves in the range of 1 wavelength or so.
【作者单位】： 清华大学电子工程系;
【基金】：国家“八六三”高技术项目(ss2015AA011306)
【分类号】：TN918.4
，
本文编号：2392334
[Abstract]:When the communication environment does not change, the only uncertain factor is the changing location of the user. In this paper, the relationship between the range of user location and the upper bound of wireless key generation rate is studied. For two extreme static environment scenarios, the upper bound of key generation rate is analyzed. The results show that in a simple channel environment, the channel state distribution is not Gauss distribution, and the upper bound of the key generation rate is only affected by the user location change. This paper analyzes the relationship between the upper bound of key generation rate and the channel estimation error in a simple single reflector scenario. Through numerical simulation, the upper bound of key generation rate under different channel estimation errors in multi-scattering scene is obtained. The results show that when the legitimate user has a high signal-to-noise ratio (SNR), the upper bound of key generation rate under different channel estimation errors is obtained. A higher upper bound of key generation rate can be obtained when the user's position moves in the range of 1 wavelength or so.
【作者单位】： 清华大学电子工程系;
【基金】：国家“八六三”高技术项目(ss2015AA011306)
【分类号】：TN918.4
，
本文编号：2392334
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