Encrypted polar codes for wiretap channel
Encrypted polar codes for wiretap channel
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DOI：
10.1109/iccsnt.2012.6526004
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发表时间：
2012-12
期刊：
影响因子：
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通讯作者：
Fantao Wu;Chao Xing;Shengmei Zhao;Feng Gao
中科院分区：
文献类型：
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作者：
Fantao Wu;Chao Xing;Shengmei Zhao;Feng Gao
Wyner提出的窃听信道是一种重要的物理层安全模型，其中法律的用户（Alice和Bob）之间的信道称为主信道，窃听者与法律的用户之间的信道称为窃听信道。信道编码技术已被证明是保证Wyner窃听信道安全的良好手段。近年来，极化码由于其容量实现特性而引起了人们的广泛关注。本文提出了一种新的构造方法，利用极化码实现更大的窃听信道保密容量。该方案将加密算法融入到极化码的构造中，并从理论上证明了方案的有效性、可靠性和安全性。随后，我们通过数值模拟给出了该方案的传输速率。数值仿真结果表明，该方案可以显著提高保密传输速率，并可以获得更大的保密传输速率。
The wiretap channel proposed by Wyner is an important model of physical layer for security, where the channel between legal users (Alice and Bob) is called the main channel and the channel between eavesdropper and legal users is called eavesdropping channel. The channel coding technique has proven to good means to ensure the security of the Wyner wiretap channel. Recently, polar codes attract a lot of attentions due to their capacity-achieving property. In this paper, we propose a novel construction method for achieving more large secrecy capacity of wiretap channel with polar codes. In the scheme, we integrate encryption algorithm to the construction of polar code and prove the validity, reliability, and security of the proposed scheme in theory. Later, we present the transmission rate of the scheme by numerical simulations. The numerical simulation results show that the secrecy transmission rate can be improved significantly and a larger secrecy transmission rate could be achieved by the proposed scheme.