Semantic communication (SC) goes beyond technical communication in which a given sequence of bits or symbols, often referred to as information, is be transmitted reliably over a noisy channel, regardless of its meaning. In SC, conveying the meaning of information becomes important, which requires some sort of agreement between a sender and a receiver through their knowledge bases. In this sense, SC is closely related to a signaling game where a sender takes an action to send a signal that conveys information to a receiver, while the receiver can interpret the signal and choose a response accordingly. Based on the signaling game, we can build a SC model and characterize the performance in terms of mutual information in this paper. In addition, we show that the conditional mutual information between the instances of the knowledge bases of communicating parties plays a crucial role in improving the performance of SC.

翻译：语义通信(SC)超越了技术通信,在这种通信中,一个特定序列的位子或符号(通常称为信息),无论含义如何,都可靠地通过一个吵闹的频道传送,无论它的意义如何。在SC,传递信息的意义变得很重要,这要求发件人和接收人通过其知识库达成某种协议。从这个意义上讲,SC与信号游戏密切相关,发件人采取行动向接收人发送信号,向接收人传递信息,而接收人可以解释信号,并据此选择回应。根据信号游戏,我们可以建立一个SC模式,在本文中以相互信息的方式描述其性能。此外,我们表明,沟通方知识基础的附带条件的相互信息在改善SC的表现方面发挥着关键作用。