Secure and Efficient OFDM System Design under Disguised Jamming
Secure and Efficient OFDM System Design under Disguised Jamming
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DOI：
10.1109/icnc47757.2020.9049721
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发表时间：
2020-02
期刊：
影响因子：
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通讯作者：
Yuan Liang;Jian Ren;Tongtong Li
中科院分区：
文献类型：
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作者：
Yuan Liang;Jian Ren;Tongtong Li
该文提出了一种安全预编码OFDM（SP-OFDM）系统，以实现在伪装干扰下的高效可靠传输。首先，我们通过在合法发射机和接收机之间引入安全共享随机性来实现动态星座，从而打破授权信号和伪装干扰之间的对称性。其次，利用任意变化信道（AVC）模型，我们证明了SP-OFDM可以实现一个积极的确定性编码容量下伪装干扰，因为对应于SP-OFDM的AVC信道是不对称的。最后通过数值算例验证了该方案在伪装干扰攻击下的有效性。
This paper proposes a securely precoded OFDM (SP-OFDM) system for efficient and reliable transmission under disguised jamming. First, we bring off a dynamic constellation by introducing secure shared randomness between the legitimate transmitter and receiver, and hence break the symmetricity between the authorized signal and the disguised jamming. Second, using the arbitrarily varying channel (AVC) model, we prove that SP-OFDM can achieve a positive deterministic coding capacity under disguised jamming since the AVC channel corresponding to SP-OFDM is not symmetrizable. Finally, numerical examples are provided to demonstrate the effectiveness of the proposed scheme under disguised jamming attacks.