提高面向任务的语义通信的信道弹性：统一信息瓶颈方法

IF 3.7 3区计算机科学 Q2 TELECOMMUNICATIONS

IEEE Communications Letters Pub Date : 2024-09-24 DOI:10.1109/LCOMM.2024.3466995

Shuai Lyu;Yao Sun;Linke Guo;Xiaoyong Yuan;Fang Fang;Lan Zhang;Xianbin Wang

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引用次数: 0

摘要

面向任务的语义通信（TSC）通过传输与任务相关的语义信息来提高无线电资源效率。然而，目前的研究往往忽略了编码特征之间固有的语义区别。由于时间和频率选择性衰落造成的不可避免的信道变化，如果受到动态信道的干扰，语义敏感的特征单元可能更容易受到错误推理的影响。因此，这封信通过信息瓶颈介绍了一种统一的抗信道 TSC 框架。该框架通过控制信息流来捕捉细粒度的特征级语义鲁棒性，从而补充了现有的 TSC 方法。实时子信道分配案例研究的实验验证了该框架的有效性。

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Improving Channel Resilience for Task-Oriented Semantic Communications: A Unified Information Bottleneck Approach

Task-oriented semantic communications (TSC) enhance radio resource efficiency by transmitting task-relevant semantic information. However, current research often overlooks the inherent semantic distinctions among encoded features. Due to unavoidable channel variations from time and frequency-selective fading, semantically sensitive feature units could be more susceptible to erroneous inference if corrupted by dynamic channels. Therefore, this letter introduces a unified channel-resilient TSC framework via information bottleneck. This framework complements existing TSC approaches by controlling information flow to capture fine-grained feature-level semantic robustness. Experiments on a case study for real-time subchannel allocation validate the framework’s effectiveness.

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来源期刊

IEEE Communications Letters 工程技术-电信学

CiteScore

8.10

自引率

7.30%

发文量

590

审稿时长

2.8 months

期刊介绍： The IEEE Communications Letters publishes short papers in a rapid publication cycle on advances in the state-of-the-art of communication over different media and channels including wire, underground, waveguide, optical fiber, and storage channels. Both theoretical contributions (including new techniques, concepts, and analyses) and practical contributions (including system experiments and prototypes, and new applications) are encouraged. This journal focuses on the physical layer and the link layer of communication systems.