Non-regenerative two-hop wiretap channels using interference neutralization

2012 IEEE International Workshop on Information Forensics and Security (WIFS) Pub Date : 2012-12-01 DOI:10.1109/WIFS.2012.6412659

Sabrina Gerbracht, Eduard Axel Jorswieck, G. Zheng, B. Ottersten

引用次数: 5

Abstract

In this paper, we analyze the achievable secrecy rates in the two-hop wiretap channel with four nodes, where the transmitter and the receiver have multiple antennas while the relay and the eavesdropper have only a single antenna each. The relay is operating in amplify-and-forward mode and all the channels between the nodes are known perfectly by the transmitter. We discuss different transmission and protection schemes like artificial noise (AN). Furthermore, we introduce interference neutralization (IN) as a new protection scheme. We compare the different schemes regarding the high-SNR slope and the high-SNR power offset and illustrate the performance by simulation results. It is shown analytically as well as by numerical simulations that the high SNR performance of the proposed IN scheme is better than the one of AN.

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使用干扰中和的非再生双跳窃听信道

本文分析了四节点两跳窃听信道中，发送端和接收端有多个天线，而中继端和窃听端各只有一个天线的可实现保密率。中继以放大转发模式工作，发射机完全知道节点之间的所有信道。我们讨论了不同的传输和保护方案，如人工噪声(AN)。此外，我们还引入了干扰中和(IN)作为一种新的保护方案。我们比较了不同方案在高信噪比斜率和高信噪比功率偏移方面的性能，并通过仿真结果说明了这些方案的性能。分析和数值模拟结果表明，本文提出的IN方案具有比AN方案更好的高信噪比性能。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 IEEE International Workshop on Information Forensics and Security (WIFS)

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