MMSE-based lattice-reduction-Aided fixed-complexity sphere decoder for low-complexity near-ML MIMO detection

Hyunsub Kim, Hyukyeon Lee, Jaeseok Kim

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

4 Citations (Scopus)

Abstract

In this paper, we propose a minimum-meansquared-error (MMSE)-based lattice-reduction (LR)-Aided fixedcomplexity sphere decoder (FSD) for low-complexity nearmaximum-likelihood (near-ML) multiple-input multiple-output (MIMO) detection. In order for the FSD to achieve optimal performance, the number of full expansion (FE) stages should be sufficient, which is the major cause of the increase in the computational complexity when either a large signal constellation or a large number of antennas are adopted. However, the proposed algorithm maintains the near-ML performance with the aid of the MMSE-based LR algorithm while reducing the number of FE stages. Although there exists the increase in the computational complexity for the application of the additional processing elements, the decrease in the number of FE stages results in the lower computational complexity of the overall algorithm. The numerical analysis demonstrates that there is a considerable decrease in the computational complexity while the performance degradation is negligible, compared to the optimal FSD.

Original languageEnglish
Title of host publication2015 IEEE 21st International Workshop on Local and Metropolitan Area Networks, LANMAN 2015
PublisherIEEE Computer Society
ISBN (Electronic)9781467367615
DOIs
Publication statusPublished - 2015 May 28
Event21st IEEE International Workshop on Local and Metropolitan Area Networks, LANMAN 2015 - Tsinghua, Beijing, China
Duration: 2015 Apr 222015 Apr 24

Publication series

NameIEEE Workshop on Local and Metropolitan Area Networks
Volume2015-May
ISSN (Print)1944-0367
ISSN (Electronic)1944-0375

Other

Other21st IEEE International Workshop on Local and Metropolitan Area Networks, LANMAN 2015
CountryChina
CityTsinghua, Beijing
Period15/4/2215/4/24

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Software
  • Electrical and Electronic Engineering
  • Communication

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    Kim, H., Lee, H., & Kim, J. (2015). MMSE-based lattice-reduction-Aided fixed-complexity sphere decoder for low-complexity near-ML MIMO detection. In 2015 IEEE 21st International Workshop on Local and Metropolitan Area Networks, LANMAN 2015 [7114716] (IEEE Workshop on Local and Metropolitan Area Networks; Vol. 2015-May). IEEE Computer Society. https://doi.org/10.1109/LANMAN.2015.7114716