With the rapid development of wireless communication technologies, interference management (IM) and security/privacy in data transmission have become critically important. On one hand, due to the broadcast nature of wireless medium, the interference superimposed on the desired signal can destroy the integrity of data transmission. On the other hand, malicious receivers (Rxs) may eavesdrop a legitimate user’s transmission and thus breach the confidentiality of communication. To counter these threats, we propose a novel encoding method, called immunizing coding (iCoding), which handles both IM and physical-layer security simultaneously. By exploiting both channel state information (CSI) and data carried in the interference, an iCoded signal is generated and sent by the legitimate transmitter (Tx). The iCoded signal interacts with the interference at the desired/legitimate Rx, so that the intended data can be recovered without the influence of disturbance, i.e., immunity to interference. In addition, since the data carried in the iCoded signal which is obtained via encoding the desired data and interference cooperatively, is different from the original desired data, the eavesdropper cannot access unauthorized information by wiretapping the desired signal, thus achieving immunity to eavesdropping. Our theoretical analysis, experimental and numerical evaluation have shown iCoding to effectively manage interference while preventing potential eavesdropping, hence enhancing the legitimate user’s transmission and secrecy thereof.

中文翻译：

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iCoding：无线通信中的干扰和窃听对策


随着无线通信技术的快速发展，数据传输中的干扰管理（IM）和安全/隐私变得至关重要。一方面，由于无线介质的广播性质，叠加在所需信号上的干扰会破坏数据传输的完整性。另一方面，恶意接收者 (Rx) 可能会窃听合法用户的传输，从而破坏通信的机密性。为了应对这些威胁，我们提出了一种新颖的编码方法，称为免疫编码（iCoding），它可以同时处理 IM 和物理层安全性。通过利用信道状态信息 (CSI) 和干扰中携带的数据，合法发射机 (Tx) 生成并发送 iCoded 信号。 iCoded信号与期望/合法Rx处的干扰相互作用，从而可以在不受干扰影响的情况下恢复预期数据，即抗干扰性。另外，由于期望数据与干扰协同编码得到的iCoded信号中携带的数据与原始期望数据不同，因此窃听者无法通过窃听期望信号来获取未授权的信息，从而实现了防窃听。我们的理论分析、实验和数值评估表明，iCoding 可以有效管理干扰，同时防止潜在的窃听，从而增强合法用户的传输及其保密性。