Dynamic resource allocation with adaptive beamforming for MIMO/OFDM systems under perfect and imperfect CSI

Ya Han Pan, Khaled Ben Letaief, Zhigang Cao

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

17 Citations (Scopus)

Abstract

Dynamic resource allocation combined with adaptive antenna arrays at both the transmitter and receiver can achieve further QoS improvement in conventional OFDM systems. In this paper, we propose two different dynamic resource allocation algorithms with adaptive beamforming for MIMO/OFDM systems and investigate their performance over multipath fading channels under perfect and imperfect CSI. These proposed approaches involve the use of adaptive modulation and adaptive frequency-domain power allocation. By employing these proposed methodology, significant performance improvement can be achieved compared to the conventional adaptive antenna arrays based OFDM systems. It will be shown, however, that the adaptive modulation based approach is too sensitive to channel estimation errors and that its performance is worse than the adaptive frequency-domain power allocation approach under imperfect CSI.

Original languageEnglish
Title of host publication2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages93-97
Number of pages5
Volume1
ISBN (Print)0780383443
Publication statusPublished - 24 Sep 2004
Event2004 IEEE Wireless Communications and Networking Conference, WCNC 2004 - Atlanta, GA, United States
Duration: 21 Mar 200425 Mar 2004

Other

Other2004 IEEE Wireless Communications and Networking Conference, WCNC 2004
CountryUnited States
CityAtlanta, GA
Period21/3/0425/3/04

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Keywords

  • Adaptive modulation
  • Adaptive power allocation
  • Joint transmit and receive beamforming
  • MIMO/OFDM

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Pan, Y. H., Letaief, K. B., & Cao, Z. (2004). Dynamic resource allocation with adaptive beamforming for MIMO/OFDM systems under perfect and imperfect CSI. In 2004 IEEE Wireless Communications and Networking Conference, WCNC 2004 (Vol. 1, pp. 93-97). Institute of Electrical and Electronics Engineers Inc..