A user scheduling with minimum-rate requirement for maximum sum-rate in MIMO-BC

Seungkyu Choi, Chungyong Lee

Research output: Contribution to journalArticlepeer-review


This letter considers a sum-rate maximization problem with user scheduling wherein each user has a minimum-rate requirement in multiple-input-multiple- output broadcast channel. The multiuser strategy used in the user scheduling is a joint transceiver scheme with block diagonal geometric mean decomposition. Since optimum solution to the user scheduling problem generally requires exhaustive search, we propose a suboptimum user scheduling algorithm with each user's minimum-rate requirement as the main constraint. In order to satisfy maximum sumrate and minimum-rate constraints simultaneously, we additionally consider power allocation for scheduled users. Simulation results show that the proposed user scheduling algorithm, together with the user power allocation, achieves sum-rate close to the exhaustive search, while also guarantees minimum-rate requirement of each user.

Original languageEnglish
Pages (from-to)3179-3182
Number of pages4
JournalIEICE Transactions on Communications
Issue number11
Publication statusPublished - 2011 Nov

All Science Journal Classification (ASJC) codes

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering


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