A highly reliable encoding and decoding communication framework based on semantic information  

作　　者：Yichi Zhang Haitao Zhao Kuo Cao Li Zhou Zhe Wang Yueling Liu Jibo Wei 

机构地区：[1]College of Electronic Science and Technology,National University of Defense Technology,Changsha 410073,China

出　　处：《Digital Communications and Networks》2024年第3期509-518,共10页数字通信与网络（英文版）

基　　金：supported in part by the National Natural Science Foundation of China under Grant No.61931020,U19B2024,62171449,62001483;in part by the science and technology innovation Program of Hunan Province under Grant No.2021JJ40690。

摘　　要：Increasing research has focused on semantic communication,the goal of which is to convey accurately the meaning instead of transmitting symbols from the sender to the receiver.In this paper,we design a novel encoding and decoding semantic communication framework,which adopts the semantic information and the contextual correlations between items to optimize the performance of a communication system over various channels.On the sender side,the average semantic loss caused by the wrong detection is defined,and a semantic source encoding strategy is developed to minimize the average semantic loss.To further improve communication reliability,a decoding strategy that utilizes the semantic and the context information to recover messages is proposed in the receiver.Extensive simulation results validate the superior performance of our strategies over state-of-the-art semantic coding and decoding policies on different communication channels.

关 键 词：Semantic information Semantic encoding method Context-based decoding method 

分 类 号：TN91[电子电信—通信与信息系统]