Recent Research on Channel Knowledge Base Construction and Channel Processing for Semantic Communication:A Survey
Based on the assistance of shared semantic knowledge base,semantic communication paradigm extracts the semantic fea-tures 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 es-sential 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 misun-derstanding.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 high-lighted.
国家科技期刊平台
NSTL
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