Linear dispersion codes for MIMO channels with limited feedback

Renato Machado, Bartolomeu F. Uchôa-Filho, Tolga M. Duman

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

1 Scopus citations

Abstract

In this paper, we propose linear dispersion codes (LDCs) for multiple-input multiple-output (MIMO) channels with a prescribed amount of feedback. The proposed scheme selects the LDC from a set of LDCs that minimizes the error probability based on the instantaneous channel conditions. The determination of the best set of LDCs, i.e., the one that minimizes the average error probability, is described as a constrained optimization problem. While this problem appears to be intractable in general, for certain parameters we present good sets of LDCs, obtained from an iterative optimization algorithm. Results are given for rate-one LDCs only, but this restriction can be removed. Computer simulations show that the proposed schemes outperform previously reported comparable schemes for the same number of feedback bits.

Original languageEnglish (US)
Title of host publicationWCNC 2008 - IEEE Wireless Communications and Networking Conference, Conference Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages199-204
Number of pages6
ISBN (Print)9781424419968
DOIs
StatePublished - 2008
EventIEEE Wireless Communications and Networking Conference, WCNC 2008 - Las Vegas, NV, United States
Duration: Mar 31 2008Apr 3 2008

Publication series

NameIEEE Wireless Communications and Networking Conference, WCNC
ISSN (Print)1525-3511

Other

OtherIEEE Wireless Communications and Networking Conference, WCNC 2008
CountryUnited States
CityLas Vegas, NV
Period3/31/084/3/08

Keywords

  • Antenna selection
  • Beamforming techniques
  • Code selection
  • Limited feedback
  • Linear dispersion codes
  • MIMO systems
  • Space-time block codes
  • Transmit diversity

ASJC Scopus subject areas

  • Engineering(all)

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