Secret Key Agreement From Vector Gaussian Sources by Rate Limited Public Communication
Secret Key Agreement From Vector Gaussian Sources by Rate Limited Public Communication
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DOI：
10.1109/tifs.2011.2132130
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发表时间：
2011-09-01
影响因子：
6.8
通讯作者：
Oohama, Yasutada
中科院分区：
文献类型：
--
作者：
Watanabe, Shun;Oohama, Yasutada
本文研究了相关向量高斯信源的密钥协商问题，其中合法的参与者可以使用有限速率的公开通信。对于单向公共通信协议类，我们证明了密钥生成速率和公共通信速率之间的最佳权衡是一个高斯随机变量的优化问题。利用Weingarten等人提出的多输入多输出（MIMO）高斯广播信道的增强技术，推导出了该特性。
We investigate the secret key agreement from correlated vector Gaussian sources in which legitimate parties can use public communication with limited rate. For the class of protocols with one-way public communication, we show that the optimal trade-off between the rate of key generation and the rate of the public communication is characterized as an optimization problem of a Gaussian random variable. The characterization is derived by using the enhancement technique introduced by Weingarten et al. for multiple-input-multiple-output (MIMO) Gaussian broadcast channel.