Rate Region Characterization for Semantics and Bits based Multiuser Communications

Xidong Mu; Yuanwei Liu

ICASSP 2023accepted0 citations

Rate Region Characterization for Semantics and Bits based Multiuser Communications

Abstract

The coexistence of semantic communication (SemCom) and bit-based communication (BitCom) towards next-generation wireless networks is investigated. First, a semantic and bit uplink communication framework is proposed, where a near user (N-user) and a far user (F-user) upload information to the access point employing BitCom and SemCom, respectively. For effectively accommodating the two different users, orthogonal multiple access (OMA) and non-orthogonal multiple access (NOMA) schemes are proposed. The semantic-versus-bit rate region achieved by each scheme is characterized. The analytical performance comparison shows that NOMA is always superior to OMA, but for the F-user, employing SemCom may not always outperform BitCom. The presented numerical examples verify the analytical result.

BibTeX

@inproceedings{icassp2023_rateregioncharac,
  title = {Rate Region Characterization for Semantics and Bits based Multiuser Communications},
  author = {Xidong Mu and Yuanwei Liu},
  booktitle = {ICASSP 2023},
  year = {2023}
}