Presentation 2005/2/23
A Study on Computational Complexity Reduction of Iterative Decoding for Turbo-coded MIMO-SDM Using Sphere Decoding
Kenji SUMII, Toshihiko NISHIMURA, Takeo OHGANE, Yasutaka OGAWA,
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Abstract(in English) A turbo-coded MIMO-SDM system requires a soft-output MIMO detector. Although MAP-based soft-output detection is optimum, its hardware implementation is very difficult since its computational complexity increases exponentially with the antennas and constellations. Sphere decoding (SD) is one of promising ways to reduce the computational complexity effectively. In SD, however, it occasionally excludes signal points required for the likelihood estimation in turbo decoding. In this paper, we propose a method recovering the signal points outside the sphere, and its error performance is evaluated. The simulation results reveal its extremely low complexity.
Keyword(in Japanese) (See Japanese page)
Keyword(in English) MIMO system / Turbo-code / MLD / SD / APP
Paper # WBS2004-63,A・P2004-244,RCS2004-331,MoMuC2004-114,MW2004-241
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Committee MoMuC
Conference Date 2005/2/23(1days)
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Language JPN
Title (in Japanese) (See Japanese page)
Sub Title (in Japanese) (See Japanese page)
Title (in English) A Study on Computational Complexity Reduction of Iterative Decoding for Turbo-coded MIMO-SDM Using Sphere Decoding
Sub Title (in English)
Keyword(1) MIMO system
Keyword(2) Turbo-code
Keyword(3) MLD
Keyword(4) SD
Keyword(5) APP
1st Author's Name Kenji SUMII
1st Author's Affiliation Graduate School of Engineering, Hokkaido University()
2nd Author's Name Toshihiko NISHIMURA
2nd Author's Affiliation Graduate School of Engineering, Hokkaido University
3rd Author's Name Takeo OHGANE
3rd Author's Affiliation Graduate School of Engineering, Hokkaido University
4th Author's Name Yasutaka OGAWA
4th Author's Affiliation Graduate School of Engineering, Hokkaido University
Date 2005/2/23
Paper # WBS2004-63,A・P2004-244,RCS2004-331,MoMuC2004-114,MW2004-241
Volume (vol) vol.104
Number (no) 681
Page pp.pp.-
#Pages 6
Date of Issue