基于信息论的语义通信:理论与挑战

摘要：对语义通信的发展历史与最新研究进行了概述，并基于经典香农信息论探寻了语义通信的数学建模。详细介绍了语义感知的信源信道联合编码模型及其渐进性能分析，具体包括速率失真区域、错误概率的内外界等，指出了该模型的退化情况与现有工程框架的关系。探讨了语义通信在实际应用中存在的潜在挑战与开放性问题。认为语义通信作为将用户需求与信息含义融入通信传输的全新架构，有望成为未来万物智联网络的新型基础范式。

关键词：无线通信；语义通信；香农信息论；信源信道联合编码；间接信源编码

Abstract: The development history and latest research of semantic communications are summarized, and the mathematical modeling of semantic communications based on the classical Shannon information theory is explored. The joint source channel encoding model of semantic perception and the progressive performance analysis, including the rate distortion region, and the inner outside of the error probability, are introduced in detail. The close connection between the degradation of the model and the existing engineering framework is pointed out. The potential challenges and open questions of semantic communications are then discussed. It is believed that semantic communications, as a new architecture integrating user needs and information meaning into communication transmission, is expected to become a new basic paradigm of all things intelligent connection network in the future.

Keywords: wireless communication; semantic communication; Shannon information theory; joint source-channel coding; indirect source coding