Autoencoder-based Semantic Communication Systems with Relay Channels

In this paper, we propose a semantic communication scheme for wireless relay channels based on Autoencoder, named AESC, which encodes and decodes sentences from the seman-tic dimension. The Autoencoder module is trained separately and acts as the channel encoder and decoder in the semantic communication system. It provides anti-noise performance for the system. Meanwhile, a novel semantic forward (SF) mode is designed for the relay node to...