---
title: "中继辅助语义通信中的语义泄漏与隐私保护"
source: "arXiv AI/CL/LG（论文）"
source_tier: "t2"
url: "https://arxiv.org/abs/2606.31973v1"
permalink: "https://feed.astralor.com/items/itm_2d2b9bc503ca810b5806127a"
published: "2026-06-30T17:15:23.000Z"
score: 55
channel: "ai"
tags: ["中继辅助","对抗训练","语义通信","隐私保护"]
---

# 中继辅助语义通信中的语义泄漏与隐私保护

## 速览

语义通信通过优先传输任务相关信息提升效率，但引入中继节点后产生隐私风险：中继无需访问原始数据即可可靠推断语义并重构信号。本文提出迭代对抗训练框架，通过考虑自适应窃听者来优化编码，使合法接收者保持高解码性能，同时有效抑制中继的语义推断。该方案在多种信道条件下显著扩大合法与窃听者的语义精度差距，并以隐蔽方式实现保护，不破坏重建保真度。

## 关键点

- 中继节点可在无原始数据条件下实现与合法接收者相当的语义推断与信号重构能力，揭示语义表示的隐私脆弱性。
- 提出迭代对抗训练框架，显式建模中继处的自适应窃听者，交替优化窃听函数与合法系统。
- 所获表示能在合法接收者保持语义解码性能的同时，显著削弱中继的语义推断能力，且通道条件变化下鲁棒。
- 保护以隐蔽方式实现，重构保真度未下降，语义泄漏被选择性抑制。

## 全文

Semantic communication (SemCom) has emerged as a promising paradigm in which the transmission of task-relevant information is prioritized over raw data, enabling efficient and robust communication under resource and channel constraints. In this paper, the privacy implications of relay-assisted SemCom systems are studied, where the intermediate relay node operates directly on learned latent representations. It is shown that the relay, even without access to source data, can reliably infer semantic meaning and reconstruct signals with performance comparable to that of the legitimate receiver, revealing a fundamental privacy vulnerability of semantic representations. To address this issue, an iterative adversarial training framework is proposed in which a strong, adaptively trained eavesdropper at the relay is explicitly accounted for. The proposed approach alternates between optimizing the relay's eavesdropping function and the legitimate system, resulting in representations that preserve semantic decoding performance at the intended receiver while degrading semantic inference at the relay. The semantic accuracy gap between the legitimate receiver and the eavesdropper is significantly enlarged across channel conditions. Importantly, this protection is achieved in a stealthy manner, with high reconstruction fidelity maintained while semantic leakage is selectively suppressed.

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