Dynamic Convolution and Transformer Based Dual-Branch Coding in Semantic Communication System

IF 3.7 3区 计算机科学 Q2 TELECOMMUNICATIONS
Jiaxin Yang;Zhiquan Bai;Xiaodong Xu;Xuchao Teng;Mengying Sun;KyungSup Kwak
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引用次数: 0

Abstract

Semantic communication is a potential key technology in 6G intelligent communication era. To reduce the information redundancy and improve the accuracy of text data transmission, this letter proposes a novel dual-branch joint source-channel coding model in semantic communication system that integrates dynamic convolution (DynConv) with Transformer architecture. The system utilizes the convolutional attention mechanism to capture the local semantic details and the Transformer self-attention mechanism for contextual associations within sentences. In particular, we further investigate the dimension allocation strategy between these two attention mechanisms, seeking the optimal balance between the recovery performance and complexity of the system. Simulation results demonstrate that, compared with the traditional communication system and the typical semantic communication system based on the standard Transformer, the proposed system achieves higher recovery performance, better robustness, and lower complexity.
语义通信系统中基于动态卷积和变压器的双支路编码
语义通信是6G智能通信时代潜在的关键技术。为了减少信息冗余,提高文本数据传输的准确性,本文提出了一种将动态卷积(DynConv)与Transformer架构相结合的语义通信系统双分支联合源信道编码模型。该系统利用卷积注意机制捕获局部语义细节,利用Transformer自注意机制捕获句子内的上下文关联。特别是,我们进一步研究了这两种注意力机制之间的维度分配策略,寻求系统恢复性能和复杂性之间的最佳平衡。仿真结果表明,与传统通信系统和基于标准Transformer的典型语义通信系统相比,该系统具有更高的恢复性能、更好的鲁棒性和更低的复杂度。
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
IEEE Communications Letters
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.
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