CSIT-adaptive multiuser resource management for space-time coded MIMO/OFDM systems

Weilan Huang, K. B. Letaief, Ying Jun Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)

Abstract

Efficient resource management is a major issue in the operation of wireless communication systems given the limited resource availability. In contrast to most existing resource allocation techniques that assume perfect channel state information at the transmitter (CSIT), a novel adaptive resource management algorithm is proposed to optimize the spectral efficiency of a multiuser multi-input multi-output (MIMO)/ orthogonal frequency division multiplexing (OFDM) system where only partial channel state information is available. With a space-time-block-coded beamformer employed at each mobile station, the proposed algorithm adaptively allocates subcarrier, bit, and power to realize efficient resource utilization. A distinctive feature of the proposed method is that the allocation strategy is directly related to the users' spatial correlation and the quality of channel feedback information. Numerical results will show that the proposed scheme achieves significant throughput improvement compared to non-adaptive systems. It will be also demonstrated that our proposed method outperforms a scheme which decouples the allocation problem into single-user optimization problems by introducing user-grouping.

Original languageEnglish
Title of host publication2006 IEEE International Conference on Communications, ICC 2006
Pages4397-4402
Number of pages6
DOIs
Publication statusPublished - 1 Dec 2006
Event2006 IEEE International Conference on Communications, ICC 2006 - Istanbul, Turkey
Duration: 11 Jul 200615 Jul 2006

Publication series

NameIEEE International Conference on Communications
Volume10
ISSN (Print)0536-1486

Other

Other2006 IEEE International Conference on Communications, ICC 2006
CountryTurkey
CityIstanbul
Period11/7/0615/7/06

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Keywords

  • Adaptive modulation
  • Adaptive resource allocation
  • Beamforming
  • Correlation
  • MIMO OFDM
  • Multiple access
  • Multiuser detection (MUD)
  • Partial CSI

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

Cite this

Huang, W., Letaief, K. B., & Zhang, Y. J. (2006). CSIT-adaptive multiuser resource management for space-time coded MIMO/OFDM systems. In 2006 IEEE International Conference on Communications, ICC 2006 (pp. 4397-4402). [4024728] (IEEE International Conference on Communications; Vol. 10). https://doi.org/10.1109/ICC.2006.255330