A joint-channel diagonalization for multiuser MIMO antenna systems

Kai Kit Wong, Ross D. Murch, Khaled Letaief

Research output: Contribution to journalArticle

176 Citations (Scopus)

Abstract

In this paper, we address the problem of improving the performance of multiuser space-division multiplexing (SDM) systems where multiple independent signal streams can be transmitted in the same frequency and time slot. The problem is important in multiuser multiple-input multiple-output systems where communication from one base station to many mobile stations can occur simultaneously. Our objective is to devise a multiuser linear space-time precoder for simultaneous channel diagonalization of the multiuser channels enabling SDM. Our new approach is based on diagonalizing the multiuser channel matrices and we use a variation of successive Jacobi rotations. In addition to the diagonalization, our approach attempts to optimize the resultant channel gains for performance enhancement. Our method is valid for both frequency-flat and frequency-selective fading channels but we assume that the base station knows all the channels and that they are quasi-stationary.

Original languageEnglish
Pages (from-to)773-786
Number of pages14
JournalIEEE Transactions on Wireless Communications
Volume2
Issue number4
DOIs
Publication statusPublished - Jul 2003
Externally publishedYes

Fingerprint

Multiuser MIMO
Diagonalization
Multiplexing
MIMO systems
Base stations
Antenna
Antennas
Frequency selective fading
Fading channels
Division
Communication
Multiple-input multiple-output (MIMO) Systems
Fading Channels
Jacobi
Enhancement
Space-time
Optimise
Valid

Keywords

  • Capacity
  • Co-channel interference (CCI)
  • Diversity
  • Joint-channel diagonalization (JCD)
  • Multiple-input multiple-output (MIMO)
  • Multiuser communications
  • Smart antennas
  • Space-division multiplexing (SDM)
  • Spectral efficiency

ASJC Scopus subject areas

  • Engineering(all)
  • Computer Networks and Communications

Cite this

A joint-channel diagonalization for multiuser MIMO antenna systems. / Wong, Kai Kit; Murch, Ross D.; Letaief, Khaled.

In: IEEE Transactions on Wireless Communications, Vol. 2, No. 4, 07.2003, p. 773-786.

Research output: Contribution to journalArticle

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