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首页> 外文会议>2017 Wireless Days >Exploiting reciprocal channel estimations for jamming to secure wireless communications
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Exploiting reciprocal channel estimations for jamming to secure wireless communications

机译：利用相互信道估计进行干扰以保护无线通信

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摘要

The work in this manuscript proposes to enhance the secrecy level of wireless systems through the use of a jamming technique that uses uncorrelated reciprocal channel estimations from the legitimate channel as a common random source to select discrete jamming signals in both sides of the legitimate link. After that selection, these jamming signals are combined with data at the legitimate transmitter, being posteriorly canceled at legitimate receiver. In order to improve the secrecy level of the proposed scheme, an algorithm that efficiently combines data with discrete jamming signals is also developed. The comparison of the scheme proposed in this manuscript with a jamming technique discussed in [13], allowed to verify that the proposed scheme achieves a level of secrecy that does not fall to zero with the signal-to-noise ratio (SNR) increase, instead it saturates in a positive level becoming independent of the power conditions. The results have also showed that making an efficient selection of the jamming signals that will be combined with data, the level of secrecy can be further improved.
机译：该手稿中的工作建议通过使用干扰技术来提高无线系统的保密级别，该技术使用来自合法信道的互不相关的互斥信道估计作为公共随机源，以选择合法链路两侧的离散干扰信号。在选择之后，这些干扰信号在合法发送器处与数据合并，随后在合法接收器处被取消。为了提高所提出方案的保密性，还开发了一种将数据与离散干扰信号有效结合的算法。通过将本手稿中提出的方案与[13]中讨论的干扰技术进行比较，可以验证所提出的方案实现的保密级别不会随信噪比（SNR）的增加而降到零，取而代之的是，它以正电平饱和，而与功率条件无关。结果还表明，通过有效选择将与数据结合的干扰信号，可以进一步提高保密程度。

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