Design of Strong Signal Masking Covert Communication Transmission Scheme Based on OFDM System

2019 IEEE 19th International Conference on Communication Technology (ICCT) Pub Date : 2019-10-01 DOI:10.1109/ICCT46805.2019.8947096

Xue Xu, Tao Jing

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引用次数: 3

Abstract

Strong Signal Masking is an anti-interception technology that covers the effective signal by using known signals with strong power characteristics, which not only ensures receiving accuracy of cooperators, but also increases receiving difficulty of non-cooperators and reduces accuracy of intercepted data. In this paper, Strong Signal Masking is combined with Orthogonal Frequency Division Multiplexing (OFDM) and anti-intercepting transmission scheme in physical layer is taken as the research direction. The paper focuses on bit error rate (BER) of effective signals under the cover of known signals as well as similarity of data intercepted by non-cooperators. Random data and Preamble data are used as known signals respectively for hidden transmission of effective data. In addition, preamble sequence data mirroring masking mechanism is proposed to reduce the BER of effective data. Simulation results show that BER performance of preamble sequence data mirroring masking system is greatly improved with the same similarity of data intercepted.

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基于OFDM系统的强信号掩蔽隐蔽通信传输方案设计

强信号掩蔽(Strong Signal Masking)是一种利用具有强功率特性的已知信号覆盖有效信号的反截获技术，既保证了合作方的接收精度，又增加了非合作方的接收难度，降低了截获数据的精度。本文将强信号掩蔽技术与正交频分复用技术(OFDM)相结合，以物理层防拦截传输方案为研究方向。本文重点研究了已知信号掩盖下有效信号的误码率以及非合作截获数据的相似度。随机数据和前置数据分别作为已知信号，用于隐藏有效数据的传输。此外，提出了前导序列数据镜像掩蔽机制，以降低有效数据的误码率。仿真结果表明，在截获数据相似度相同的情况下，前导序列数据镜像掩蔽系统的误码率性能得到了很大的提高。

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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来源期刊

2019 IEEE 19th International Conference on Communication Technology (ICCT)

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