A Wireless AI-Generated Content (AIGC) Provisioning Framework Empowered by Semantic Communication
This addresses the problem of efficient AIGC provisioning for mobile users in wireless networks, representing an incremental improvement by integrating semantic communication with diffusion models.
The paper tackles the challenge of providing high-quality AI-generated content (AIGC) over wireless networks by proposing a semantic communication-empowered framework (SemAIGC) that reduces latency and improves content quality compared to conventional methods, as verified by simulations.
With the significant advances in AI-generated content (AIGC) and the proliferation of mobile devices, providing high-quality AIGC services via wireless networks is becoming the future direction. However, the primary challenges of AIGC services provisioning in wireless networks lie in unstable channels, limited bandwidth resources, and unevenly distributed computational resources. To this end, this paper proposes a semantic communication (SemCom)-empowered AIGC (SemAIGC) generation and transmission framework, where only semantic information of the content rather than all the binary bits should be generated and transmitted by using SemCom. Specifically, SemAIGC integrates diffusion models within the semantic encoder and decoder to design a workload-adjustable transceiver thereby allowing adjustment of computational resource utilization in edge and local. In addition, a Resource-aware wOrklOad Trade-off (ROOT) scheme is devised to intelligently make workload adaptation decisions for the transceiver, thus efficiently generating, transmitting, and fine-tuning content as per dynamic wireless channel conditions and service requirements. Simulations verify the superiority of our proposed SemAIGC framework in terms of latency and content quality compared to conventional approaches.