On multi-user gain in MIMO systems with rate constraints

Peng Wang, Li Ping

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Scopus citations


In this paper, we study the advantages of multi-user concurrent transmission, measured using the multi-user gain (MUG), in multiple-input multiple-output (MIMO) systems with rate constraints. Our focus is on a maximum eigenmode beamforming (MEB) strategy. We derive a closed-form expression for the transmitted sum power required by the MEB strategy and prove that this strategy is asymptotically optimal. The simple closed-form expression for the MEB sum-power provides many useful insights into the asymptotic behavior of multi-user MIMO systems. Interleave-division multiple-access is adopted as a platform for implementing the proposed MEB scheme. Both numerical and simulation results show that a major part of MUG can be achieved with a quite small number of users.

Original languageEnglish
Title of host publicationIEEE GLOBECOM 2007 - 2007 IEEE Global Telecommunications Conference, Proceedings
Number of pages5
StatePublished - 2007
Externally publishedYes
Event50th Annual IEEE Global Telecommunications Conference, GLOBECOM 2007 - Washington, DC, United States
Duration: 26 Nov 200730 Nov 2007

Publication series

NameGLOBECOM - IEEE Global Telecommunications Conference


Conference50th Annual IEEE Global Telecommunications Conference, GLOBECOM 2007
Country/TerritoryUnited States
CityWashington, DC


  • Maximum eigenmode beamforming (MEB)
  • Multi-user gain (MUG)
  • Multiple-input multiple-output (MIMO)


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