Maximum sum-rate of mimo multiuser scheduling with linear receivers

Raymond H Y Louie, Matthew R. McKay, Iain B. Collings

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

We analyze scheduling algorithms for multiuser communication systems with users having multiple antennas and linear receivers. When there is no feedback of channel information, we consider a common round robin scheduling algorithm, and derive new exact and high signal-to-noise ratio (SNR) maximum sum-rate results for the maximum ratio combining (MRC) and minimum mean squared error (MMSE) receivers. We also present new analysis of MRC, zero forcing (ZF) and MMSE receivers in the low SNR regime. When there are limited feedback capabilities in the system, we consider a common practical scheduling scheme based on signal-tointerference-and-noise ratio (SINR) feedback at the transmitter. We derive new accurate approximations for the maximum sumrate, for the cases of MRC, ZF and MMSE receivers. We also derive maximum sum-rate scaling laws, which reveal that the maximum sum-rate of all three linear receivers converge to the same value for a large number of users, but at different rates.

Original languageEnglish
Article number5336871
Pages (from-to)3500-3510
Number of pages11
JournalIEEE Transactions on Communications
Volume57
Issue number11
DOIs
Publication statusPublished - Nov 2009
Externally publishedYes

Keywords

  • Linear receivers
  • Multiuser systems
  • Opportunistic scheduling
  • Round robin scheduling

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