信源信道联合的新范式：语义通信

摘要：从信源信道联合处理的角度，总结了编码传输技术的发展历程，进而引入基于非线性处理的语义通信编码传输新技术框架。该框架采用“非线性变换”和“非线性编码”两个新机制，可有效提取信源的语义特征，并与信道传输实现精准匹配，从而显著提升系统传输效率，实现通信传输从经典技术层到现代语义层的突破。

关键词：语义通信；信源信道联合；非线性变换；非线性编码；深度学习

Abstract: From the perspective of joint processing of sources and channels, the development process of coding transmission technologies is summarized, and a new technical framework of semantic communication coding and transmission based on nonlinear processing is introduced. This framework introduces two new mechanisms—nonlinear transform and nonlinear coding, which can effectively extract the semantic characteristics of a source and achieve accurate matching with channel transmission, thus significantly improving the system transmission efficiency and realizing the breakthrough of communication transmission from the classical technology layer to the modern semantic layer.

Keywords: semantic communication; joint source and channel; nonlinear transform; nonlinear coding; deep learning