The Journal of China Universities of Posts and Telecommunications ›› 2024, Vol. 31 ›› Issue (1): 26-36.doi: 10.19682/j.cnki.1005-8885.2024.2003

• Special Topic: Semantic Communication • Previous Articles     Next Articles

Wireless semantic communication based on semantic matching multiple access and intent bias multiplexing

Ren Chao, He Zongrui, Sun Chen, Li Haojin, Zhang Haijun   

  1. 1. University of Science and Technology Beijing, Beijing 100083, China 2. Research and Development Center, Sony (China) Limited, Beijing 100027, China
  • Received:2024-02-01 Revised:2024-02-29 Accepted:2024-03-01 Online:2024-02-29 Published:2024-03-01
  • Contact: Corresponding author: Zhang Haijun, E-mail:
  • Supported by:
    This work was supported in part by the National Natural Science Foundation of China (62201034).

Abstract: This paper proposes a multi-access and multi-user semantic communication scheme based on semantic matching and intent deviation to address the increasing demand for wireless users and data. The scheme enables flexible management of long frames, allowing each unit of bandwidth to support a higher number of users. By leveraging semantic classification, different users can independently access the network through the transmission of long concatenated sequences without modifying the existing wireless communication architecture. To overcome the potential disadvantage of incomplete semantic database matching leading to semantic intent misunderstanding, the scheme proposes using intent deviation as an advantage. This allows different receivers to interpret the same semantic information differently, enabling multiplexing where one piece of information can serve multiple users with distinct purposes. Simulation results show that at a bit error rate (BER) of 0.1, it is possible to reduce the transmission by approximately 20 semantic basic units.

Key words: semantic communication, multiple access, multiplexing, multimodal communication