Performance of adaptive subchannel assignment-based MIMO/OFDM systems over multipath fading channels

Yahan Pan, Khaled Letaief, Zhigang Cao

Research output: Contribution to journalArticle

Abstract

Adaptive antenna arrays at both the base and mobile stations can further increase system capacity and improve the quality of service of conventional orthogonal frequency division multiplexing (OFDM) systems. Conventional adaptive antenna array-based multiple-input multiple-output (MIMO)/OFDM systems use the sub-carriers characterized by the largest eigenvalue to transmit the OFDM symbols. This paper describes the performance of adaptive subchannel assignment-based MIMO/OFDM systems over multipath fading channels. The system adaptively selects the eigenvectors associated with the relatively large subchannel eigenvalues to generate the antenna array weights at the base and mobile stations and then adaptively assigns the corresponding best subchannels to transmit the OFDM symbols. Simulation results show that the proposed system can achieve better performance than the conventional adaptive antenna array-based MIMO/OFDM system over multipath fading channels.

Original languageEnglish
Pages (from-to)19-24
Number of pages6
JournalTsinghua Science and Technology
Volume11
Issue number1
DOIs
Publication statusPublished - Feb 2006
Externally publishedYes

Fingerprint

Multipath fading
Fading channels
Orthogonal frequency division multiplexing
Smart antennas
Antenna arrays
Eigenvalues and eigenfunctions
Quality of service

Keywords

  • Adaptive subchannel assignment
  • Joint transmit and receive antenna array weighting
  • Multipath fading channel
  • Multiple-input multiple-output/orthogonal frequency division multiplexing

ASJC Scopus subject areas

  • General

Cite this

Performance of adaptive subchannel assignment-based MIMO/OFDM systems over multipath fading channels. / Pan, Yahan; Letaief, Khaled; Cao, Zhigang.

In: Tsinghua Science and Technology, Vol. 11, No. 1, 02.2006, p. 19-24.

Research output: Contribution to journalArticle

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