2008년 추계학술대회
Current Result Document :
| 한글제목(Korean Title) |
A Low Complexity Multi-level Sphere Decoder for MIMO Systems with QAM signals |
| 영문제목(English Title) |
A Low Complexity Multi-level Sphere Decoder for MIMO Systems with QAM signals |
| 저자(Author) |
Van-Su Pham
Giwan Yoon
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| 원문수록처(Citation) |
VOL 12 NO. 02 PP. 0890 ~ 0893 (2008. 10) |
한글내용
(Korean Abstract) |
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영문내용
(English Abstract) |
In this paper, we present a low complexity modified multi-level sphere decoder (SD) for multiple-input multiple-output (MIMO) systems employing quadrature amplitude modulation (QAM) signals. The proposed decoder, exploiting the multi-level structure of the QAM signal scheme, first decomposes the high-level constellation into low-level 4-QAM constellations, so-called sub-constellations. Then, it deploys SD in the sub-constellations in parallel. In addition, in the searching stage, it uses the optimal low-complexity sort method. Computer simulation results show that the proposed decoder can provide near optimal maximum-likelihood (ML) performance while it significantly reduces the computational load.
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| 키워드(Keyword) |
Multiple-input multiple-output (MIMO)
Multi-level stage
Sphere decoder
VBLAST
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| 파일첨부 |
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