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arXiv 1909.04898cs.ITmath.IT
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多消息窃听广播信道的极化编码

Polar Coding for the Wiretap Broadcast Channel with Multiple Messages

Jaume del Olmo, Javier R. Fonollosa

摘要:

针对两个合法接收者和一个窃听者的窃听广播信道,提出了一种极化编码方案。我们考虑一个模型,其中发射机希望发送不同的机密(和非机密)的信息,每个合法的接收器。首先,我们比较了文献中该模型的可达区域上的两个内界,然后我们设计了一个极化编码方案,实现了更强的一个。在所提出的方案中,编码使用基于极性的马顿编码,其中一个内层必须由两个合法的接收器可靠地解码,并且每个接收器必须解码其自己对应的外层。由于广播信道的非劣化条件,编码器构建链接构造,该链接构造引起相邻块之间的双向依赖性。实际上,这些依赖性可以发生在不同块的不同编码层之间。使用两个密钥,其长度在速率方面可以忽略不计,需要证明极化码满足强保密条件。

英文摘要:

A polar coding scheme is proposed for the Wiretap Broadcast Channel with two legitimate receivers and one eavesdropper. We consider a model in which the transmitter wishes to send different confidential (and non-confidential) information to each legitimate receiver. First, we compare two inner-bounds on the achievable region of this model from the literature, and then we design a polar coding scheme that achieves the stronger one. In the proposed scheme, the encoding uses polar-based Marton's coding, where one inner-layer must be reliably decoded by both legitimate receivers, and each receiver must decode its own corresponding outer-layer. Due to the non-degradedness condition of the broadcast channel, the encoder builds a chaining construction that induces bidirectional dependencies between adjacent blocks. Indeed, these dependencies can occur between different encoding layers of different blocks. The use of two secret-keys, whose length are negligible in terms of rate, are required to prove that the polar code satisfies the strong secrecy condition.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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