无线通信中基于量化隔离带的新型相位密钥生成方法  

New kind of phase key generation method in wireless communications based on channel quantization with guard-bands

作　　者：盛旺[1] 侯晓赟[1] 朱艳[1] 魏浩[1] 

机构地区：[1]南京邮电大学信号处理与传输研究院,南京210003

出　　处：《计算机应用研究》2014年第10期3100-3103,共4页Application Research of Computers

基　　金：国家自然科学基金资助项目(61201270)

摘　　要：针对无线通信中利用物理层属性进行加密存在的密钥不一致以及密钥生成速率不高的问题,给出了一种基于信道量化隔离带的相位密钥生成新方法。利用相位均匀分布的属性,产生的密钥具有良好的随机性及均匀分布特性。利用信道量化隔离带的方法,在量化边界处设立隔离带,对产生误判概率较大的接收值进行删除,有效提高了生成的密钥一致性。仿真结果表明,该方法在提高密钥生成速率的同时确保了生成的密钥的准确性。In wireless communication, using physical layer attributes to key eneryption is presented to ensure information se- curity. But it exists the problem of inconsistent keys and the key generation rate is not high. This paper proposed a new method based on channel quantized phase with guard-bands. Using the phase properties of uniform distribution, the resulting keys had excellent random characteristics and uniformity of distribution. Using the new method which could establish buffer zone at the boundary, it would delete the receiving data which brought wrong keys and effectively improved the consistency of the generated keys. Simulation results show that this method can improve the key generation rate while ensure the accuracy of the generated key.

关 键 词：物理层安全 密钥提取 量化隔离带 相位 密钥一致性 密钥生成速率 

分 类 号：TN925[电子电信—通信与信息系统] TP309.7[电子电信—信息与通信工程]