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语义通信基于共享语义知识库辅助，提取信源语义特征进行编码传输，实现信息的“达意”传递，被认为是应对6G愿景的使能技术之一。为了构建高效、鲁棒的语义通信系统，深入研究语义通信中涉及无线信道建模与处理的相关内容必不可少，如挖掘信道特征以指导语义编/译码、对抗信道衰落与噪声以抑制语义信息误解等。旨在综述面向语义通信涉及无线信道建模与处理的研究进展，在概述语义通信原理基础上，总结了语义通信中涉及无线信道建模与处理的三个方面，包括信道知识库构建、物理信道处理和语义信道处理，综述了相关方面的研究方法与进展。结合已有研究成果，探讨了信道知识库构建和信道处理存在的挑战并展望了其未来发展方向。
Abstract：Based on the assistance of shared semantic knowledge base, semantic communication paradigm extracts the semantic features of information source for encoding transmission to realize the “meaning” transmission of information, which is considered as one of the enabling technologies to cope with the vision of 6G.In order to build an efficient and robust semantic communication system, it is essential to study the consents intensively related to wireless channel modeling and processing in semantic communication, such as mining channel features to guide semantic coding/decoding, and countering channel fading and noise to suppress semantic information misunderstanding.This paper aims to review recent research related to wireless channel modeling and processing for semantic communication.Firstly, on the basis of summarizing the principle of semantic communication, three aspects of wireless channel modeling and processing for semantic communication are summarized, including channel knowledge base construction, physical channel processing and semantic channel processing.Secondly, the related research methods and progresses are reviewed.Finally, combined with the existing research, the challenges of channel knowledge base construction and channel processing are discussed, and the future promising directions are highlighted.
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基本信息:
中图分类号:TN929.5
引用信息:
[1]陈建侨,马楠,许晓东,等.面向语义通信的信道知识库构建与信道处理研究综述[J].无线电通信技术,2024,50(03):519-527.
基金信息:
北京市科技计划项目(Z221100007722032)~~