Harnessing the Power of AI-Generated Content for Semantic Communication
IEEE Network(2024)
Abstract
Semantic Communication (SemCom) is envisaged as the next-generation paradigm
to address challenges stemming from the conflicts between the increasing volume
of transmission data and the scarcity of spectrum resources. However, existing
SemCom systems face drawbacks, such as low explainability, modality rigidity,
and inadequate reconstruction functionality. Recognizing the transformative
capabilities of AI-generated content (AIGC) technologies in content generation,
this paper explores a pioneering approach by integrating them into SemCom to
address the aforementioned challenges. We employ a three-layer model to
illustrate the proposed AIGC-assisted SemCom (AIGC-SCM) architecture,
emphasizing its clear deviation from existing SemCom. Grounded in this model,
we investigate various AIGC technologies with the potential to augment SemCom's
performance. In alignment with SemCom's goal of conveying semantic meanings, we
also introduce the new evaluation methods for our AIGC-SCM system.
Subsequently, we explore communication scenarios where our proposed AIGC-SCM
can realize its potential. For practical implementation, we construct a
detailed integration workflow and conduct a case study in a virtual reality
image transmission scenario. The results demonstrate our ability to maintain a
high degree of alignment between the reconstructed content and the original
source information, while substantially minimizing the data volume required for
transmission. These findings pave the way for further enhancements in
communication efficiency and the improvement of Quality of Service. At last, we
present future directions for AIGC-SCM studies.
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Key words
Semantic communication,AI-generated content,generative AI,communication efficiency
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