Optimization of switched MIMO systems over rayleigh fading channels

Seyeong Choi, Young Chai Ko, Edward J. Powers

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


This paper proposes a new switched MIMO system where the MIMO includes both diversity-based MIMO and spatial multiplexing MIMO (SM-MIMO). The proposed scheme is a closed-loop system where the feedback bits are sent back to the transmitter to indicate the channel quality. The switching operation is employed among groups of a certain number of transmit antennas. For diversity-based MIMO systems, the switching operation aims to improve the link performance, while the goal of the switching for the SM-MIMO systems is to increase the data rate. The authors analyze and optimize the proposed systems and show that there is considerable benefit in terms of performance and practical use.

Original languageEnglish
Pages (from-to)103-114
Number of pages12
JournalIEEE Transactions on Vehicular Technology
Issue number1
Publication statusPublished - 2007 Jan

Bibliographical note

Funding Information:
Manuscript received April 2, 2004; revised September 30, 2005 and January 2, 2006. This work was supported by the Center for Broadband OFDM Mobile Access (BrOMA) at POSTECH through the ITRC program of the Korean MIC, supervised by IITA under Grant IITA-2005-C1090-0502-0008. The review of this paper was coordinated by Prof. Z. Wang.


  • Diversity techniques
  • Fading channels
  • MIMO
  • Performance analysis
  • Switched diversity
  • Transmit diversity

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Electrical and Electronic Engineering
  • Applied Mathematics


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