A lattice-reduction aided max-log list demapper for iterative coded MIMO receiver

Tung Jung Hsieh, Wern Ho Sheen, Sin-Horng Chen, Jen Yuan Hsu

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

Abstract

The max-log list demapper has been widely employed in the implementation of a coded multiple-input multiple-output (MIMO) receiver, where only a candidate-list of signal vectors is examined in the likelihood-ratio calculation to reduce complexity. Traditionally, the candidate-list is generated in the original-lattice domain which, unfortunately, results in a severe degradation in the performance of demapper if the channel is in ill-condition. In this paper, a new lattice-reduction aided max-log list demapper is proposed for iterative receivers in which the candidate-list is generated after a successive cancellation of multi-layer interference in the lattice-reduced domain. Thanks to the newly designed metric and search algorithm for the generation of the candidate-list, the proposed demapper provides significant gains over the existing methods, especially for the cases with a small list size and/or under a spatially-correlated channel. The prior information coming out of the decoder is also exploited to lower the complexity of the demapper.

Original languageEnglish
Title of host publicationProceedings - 2014 International Symposium on Computer, Consumer and Control, IS3C 2014
PublisherIEEE Computer Society
Pages1069-1073
Number of pages5
ISBN (Print)9781479952779
DOIs
StatePublished - 1 Jan 2014
Event2nd International Symposium on Computer, Consumer and Control, IS3C 2014 - Taichung, Taiwan
Duration: 10 Jun 201412 Jun 2014

Publication series

NameProceedings - 2014 International Symposium on Computer, Consumer and Control, IS3C 2014

Conference

Conference2nd International Symposium on Computer, Consumer and Control, IS3C 2014
CountryTaiwan
CityTaichung
Period10/06/1412/06/14

Keywords

  • breadth-first search
  • coded MIMO receiver
  • iterative decoding
  • lattice reduction
  • max-log list demapper

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  • Cite this

    Hsieh, T. J., Sheen, W. H., Chen, S-H., & Hsu, J. Y. (2014). A lattice-reduction aided max-log list demapper for iterative coded MIMO receiver. In Proceedings - 2014 International Symposium on Computer, Consumer and Control, IS3C 2014 (pp. 1069-1073). [6846071] (Proceedings - 2014 International Symposium on Computer, Consumer and Control, IS3C 2014). IEEE Computer Society. https://doi.org/10.1109/IS3C.2014.279