Optimizing Power and Resource Management for Multiuser MIMO/OFDM Systems

Ying Jun Zhang, Khaled Letaief

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

21 Citations (Scopus)

Abstract

Fast adaptive transmission has been recently recognized as an essential method to exploit the system diversity and enhance power/spectral efficiency in time-varying channels. In this paper, we propose adaptive transmission algorithms for multiuser MIMO/OFDM systems. The algorithms adaptively control multiple-access, modulation, and transmit power to exploit the channel variation in space, frequency, and user domains. The ultimate objective is to optimize the overall power efficiency while ensuring the fulfillment of every user's QoS requirements. A major challenge in the problem lies in the optimization complexity due to the presence of non-linear, non-convex constraints. The proposed algorithms successfully reduce the optimization complexity and solve the noise enhancement problem that exists in multiuser systems with non-orthogonal signatures. Numerical results show that significant improvement in power/spectral efficiency is achievable with reasonable computational complexity when the above schemes are applied.

Original languageEnglish
Title of host publicationConference Record / IEEE Global Telecommunications Conference
Pages179-183
Number of pages5
Volume1
Publication statusPublished - 2003
Externally publishedYes
EventIEEE Global Telecommunications Conference GLOBECOM'03 - San Francisco, CA, United States
Duration: 1 Dec 20035 Dec 2003

Other

OtherIEEE Global Telecommunications Conference GLOBECOM'03
CountryUnited States
CitySan Francisco, CA
Period1/12/035/12/03

Fingerprint

MIMO systems
Orthogonal frequency division multiplexing
resource management
Computational complexity
Quality of service
Modulation

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Global and Planetary Change

Cite this

Zhang, Y. J., & Letaief, K. (2003). Optimizing Power and Resource Management for Multiuser MIMO/OFDM Systems. In Conference Record / IEEE Global Telecommunications Conference (Vol. 1, pp. 179-183)

Optimizing Power and Resource Management for Multiuser MIMO/OFDM Systems. / Zhang, Ying Jun; Letaief, Khaled.

Conference Record / IEEE Global Telecommunications Conference. Vol. 1 2003. p. 179-183.

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

Zhang, YJ & Letaief, K 2003, Optimizing Power and Resource Management for Multiuser MIMO/OFDM Systems. in Conference Record / IEEE Global Telecommunications Conference. vol. 1, pp. 179-183, IEEE Global Telecommunications Conference GLOBECOM'03, San Francisco, CA, United States, 1/12/03.
Zhang YJ, Letaief K. Optimizing Power and Resource Management for Multiuser MIMO/OFDM Systems. In Conference Record / IEEE Global Telecommunications Conference. Vol. 1. 2003. p. 179-183
Zhang, Ying Jun ; Letaief, Khaled. / Optimizing Power and Resource Management for Multiuser MIMO/OFDM Systems. Conference Record / IEEE Global Telecommunications Conference. Vol. 1 2003. pp. 179-183
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