A new approach to iterative decoding on coded MIMO channels

Yi Hong, Jinho Choi

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For coded multiple-input multiple-output spatial multiplexing (MIMO-SM) systems, the iterative receiver consists of a MIMO detector and a channel decoder. The sphere decoding (SD) technique can be employed to implement the MIMO maximum likelihood (ML) detection with a lower complexity. However, it is generally required to provide a soft-decision for the MIMO detection rather than a hard-decision for decoding. Hence, some modifications of the SD have been proposed to provide a soft-decision. In this paper, we propose an alternative algorithm that is based on the geometrical point of view. Using the proposed algorithm, the maximum a-posteriori (MAP) detection for the soft-decision can be implemented by the list sphere decoding (LSD) technique. Through simulations, it is shown that the performance is comparable to the existing algorithm

Original languageEnglish
Title of host publication2005 IEEE 61st Vehicular Technology Conference - Proceedings
EditorsLynn Guarente, Laura Hyslop
Place of PublicationNew York NY USA
PublisherIEEE, Institute of Electrical and Electronics Engineers
Number of pages5
ISBN (Print)0780388879
Publication statusPublished - 17 Oct 2005
Externally publishedYes
EventIEEE Vehicular Technology Conference 2005 (Spring) - Stockholm, Sweden
Duration: 30 May 20051 Jun 2005
Conference number: 61st
https://ieeexplore.ieee.org/xpl/conhome/10360/proceeding?isnumber=32958 (Proceedings)

Publication series

NameIEEE Vehicular Technology Conference
ISSN (Print)1550-2252


ConferenceIEEE Vehicular Technology Conference 2005 (Spring)
Abbreviated titleVTC Spring 2005
Internet address


  • Iterative decoding
  • MIMO
  • Sphere decoding

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