Feedback Enhances the Security of State-Dependent Degraded Broadcast Channels With Confidential Messages
Feedback Enhances the Security of State-Dependent Degraded Broadcast Channels With Confidential Messages
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DOI：
10.1109/tifs.2015.2419182
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发表时间：
2015-07-01
影响因子：
6.8
通讯作者：
Fang, Xuming
中科院分区：
文献类型：
--
作者：
Dai, Bin;Ma, Zheng;Fang, Xuming
在本文中，我们研究了状态依赖的退化广播信道与机密消息（SD-DBC-CM），并与无噪声反馈。在这个新的模型中，信道状态在发射机处以非因果或因果的方式可用，并且可能存在从非劣化接收机到发射机的无噪声反馈链路。对于离散无记忆SD-DBC-CM，提供了非因果和因果情况下的能力模糊区域的内界和外界。对于带反馈的离散无记忆SD-DBC-CM，在非因果情形下给出了容量模糊区域的内、外边界，在因果情形下确定了容量模糊区域.本文的结果进一步解释通过高斯和二元的例子。
In this paper, we investigate the state-dependent degraded broadcast channels with confidential messages (SD-DBC-CM), and with or without noiseless feedback. In this new model, the channel state is available at the transmitter in a noncausal or causal manner, and there may exist a noiseless feedback link from the nondegraded receiver to the transmitter. For the discrete memoryless SD-DBC-CM, inner and outer bounds on the capacity-equivocation regions are provided for both the noncausal and causal cases. For the discrete memoryless SD-DBC-CM with feedback, inner and outer bounds on the capacity-equivocation region are provided for the noncausal case, and the capacity-equivocation region is determined for the causal case. The results of this paper are further explained via Gaussian and binary examples.