Coordinated Rate Splitting Multiple Access for Multi-Cell Downlink Networks

Nohgyeom Ha, Wonjae Shin, Mojtaba Vaezi, H. Vincent Poor

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Scopus citations


This paper considers a two-cell downlink cellular network with two cell-center users and a cell-edge user. By jointly splitting messages of multiple users into a set of common and private parts, we design a new multi-cell transmission scheme, called the coordinated rate-splitting multiple access (C-RSMA), to effectively manage the inter-cell interference as well as the inter-user interference. Under symmetric channel strength and transmit power, the optimal power split ratios among common and private messages are efficiently obtained with respect to maximizing the weighted sum-rate. Finally, it is shown that the achievable rate region of the proposed C-RSMA is larger than that of existing multi-cell transmission schemes relied on orthogonal multiple access and non-orthogonal multiple access.

Original languageEnglish (US)
Title of host publicationConference Record of the 54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020
EditorsMichael B. Matthews
PublisherIEEE Computer Society
Number of pages6
ISBN (Electronic)9780738131269
StatePublished - Nov 1 2020
Externally publishedYes
Event54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020 - Pacific Grove, United States
Duration: Nov 1 2020Nov 5 2020

Publication series

NameConference Record - Asilomar Conference on Signals, Systems and Computers
ISSN (Print)1058-6393


Conference54th Asilomar Conference on Signals, Systems and Computers, ACSSC 2020
Country/TerritoryUnited States
CityPacific Grove

All Science Journal Classification (ASJC) codes

  • Signal Processing
  • Computer Networks and Communications


  • Coordinated multipoint (CoMP)
  • interference management
  • rate-splitting multiple access (RSMA)

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