Mixed quality of service in cell-free massive MIMO

Manijeh Bashar, Kanapathippillai Cumanan, Alister G. Burr, Hien Quoc Ngo, H. Vincent Poor

Research output: Contribution to journalArticlepeer-review

33 Scopus citations


A mixed quality-of-service (QoS) problem is investigated in the uplink of a cell-free massive multiple-input multiple-output system where the minimum rate of non-real time users is maximized with per user power constraints while the rates of the real-time users (RTUs) meet their target rates. The original mixed QoS problem is formulated in terms of receiver filter coefficients and user power allocations, which can iteratively be solved through two sub-problems, namely, receiver filter coefficient design and power allocation. Numerical results show that, while the rates of RTUs meet the QoS constraints, the 90%-likely throughput improves significantly, compared with a simple benchmark scheme.

Original languageEnglish (US)
Pages (from-to)1494-1497
Number of pages4
JournalIEEE Communications Letters
Issue number7
StatePublished - Jul 2018

All Science Journal Classification (ASJC) codes

  • Modeling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering


  • Cell-free massive MIMO
  • QoS requirement
  • geometric programming
  • max-min SINR


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