The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. ex. Some numerals are expressed as "XNUMX".
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The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
조회수
108
본 논문에서는 과부하된 MIMO를 위한 반복 선형 수신기의 복잡도가 낮은 소프트 입력 디코딩을 제안합니다. 제안된 소프트 입력 디코딩은 계산 복잡도를 줄이기 위해 LLR(log-likelihood ratio)을 추정하기 위해 두 가지 유형의 격자 감소 보조 선형 필터를 적용합니다. 제안된 디코딩에서 LLR 추정을 위해 격자 감소 보조 선형 및 백색화 필터가 도입되었습니다. 선형 필터로 인해 발생하는 등가 잡음은 디코더 출력 스트림으로 완화되고 등가 잡음 완화 후 LLR이 다시 추정됩니다. 또한 잘못된 LLR로 인한 성능 저하를 방지하기 위해 제안된 디코딩에는 LLR 클리핑이 도입되었습니다. 제안된 디코딩의 성능은 컴퓨터 시뮬레이션을 통해 평가된다. 제안된 디코딩은 BER 2에서 소위 MLD라고 불리는 완전 탐색 알고리즘을 사용한 소프트 디코딩보다 약 10dB 더 나은 BER 성능을 달성한다.-4, 제안된 복호화의 복잡도는 전체 탐색을 이용한 소프트 복호화의 복잡도의 1/10 수준임에도 불구하고.
Satoshi DENNO
Okayama University
Tsubasa INOUE
Okayama University
Yuta KAWAGUCHI
Okayama University
Takuya FUJIWARA
Okayama University
Yafei HOU
Okayama University
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Satoshi DENNO, Tsubasa INOUE, Yuta KAWAGUCHI, Takuya FUJIWARA, Yafei HOU, "Low Complexity Soft Input Decoding in an Iterative Linear Receiver for Overloaded MIMO" in IEICE TRANSACTIONS on Communications,
vol. E103-B, no. 5, pp. 600-608, May 2020, doi: 10.1587/transcom.2019EBP3159.
Abstract: This paper proposes a low complexity soft input decoding in an iterative linear receiver for overloaded MIMO. The proposed soft input decoding applies two types of lattice reduction-aided linear filters to estimate log-likelihood ratio (LLR) in order to reduce the computational complexity. A lattice reduction-aided linear with whitening filter is introduced for the LLR estimation in the proposed decoding. The equivalent noise caused by the linear filter is mitigated with the decoder output stream and the LLR is re-estimated after the equivalent noise mitigation. Furthermore, LLR clipping is introduced in the proposed decoding to avoid the performance degradation due to the incorrect LLRs. The performance of the proposed decoding is evaluated by computer simulation. The proposed decoding achieves about 2dB better BER performance than soft decoding with the exhaustive search algorithm, so called the MLD, at the BER of 10-4, even though the complexity of the proposed decoding is 1/10 as small as that of soft decoding with the exhaustive search.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2019EBP3159/_p
부
@ARTICLE{e103-b_5_600,
author={Satoshi DENNO, Tsubasa INOUE, Yuta KAWAGUCHI, Takuya FUJIWARA, Yafei HOU, },
journal={IEICE TRANSACTIONS on Communications},
title={Low Complexity Soft Input Decoding in an Iterative Linear Receiver for Overloaded MIMO},
year={2020},
volume={E103-B},
number={5},
pages={600-608},
abstract={This paper proposes a low complexity soft input decoding in an iterative linear receiver for overloaded MIMO. The proposed soft input decoding applies two types of lattice reduction-aided linear filters to estimate log-likelihood ratio (LLR) in order to reduce the computational complexity. A lattice reduction-aided linear with whitening filter is introduced for the LLR estimation in the proposed decoding. The equivalent noise caused by the linear filter is mitigated with the decoder output stream and the LLR is re-estimated after the equivalent noise mitigation. Furthermore, LLR clipping is introduced in the proposed decoding to avoid the performance degradation due to the incorrect LLRs. The performance of the proposed decoding is evaluated by computer simulation. The proposed decoding achieves about 2dB better BER performance than soft decoding with the exhaustive search algorithm, so called the MLD, at the BER of 10-4, even though the complexity of the proposed decoding is 1/10 as small as that of soft decoding with the exhaustive search.},
keywords={},
doi={10.1587/transcom.2019EBP3159},
ISSN={1745-1345},
month={May},}
부
TY - JOUR
TI - Low Complexity Soft Input Decoding in an Iterative Linear Receiver for Overloaded MIMO
T2 - IEICE TRANSACTIONS on Communications
SP - 600
EP - 608
AU - Satoshi DENNO
AU - Tsubasa INOUE
AU - Yuta KAWAGUCHI
AU - Takuya FUJIWARA
AU - Yafei HOU
PY - 2020
DO - 10.1587/transcom.2019EBP3159
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E103-B
IS - 5
JA - IEICE TRANSACTIONS on Communications
Y1 - May 2020
AB - This paper proposes a low complexity soft input decoding in an iterative linear receiver for overloaded MIMO. The proposed soft input decoding applies two types of lattice reduction-aided linear filters to estimate log-likelihood ratio (LLR) in order to reduce the computational complexity. A lattice reduction-aided linear with whitening filter is introduced for the LLR estimation in the proposed decoding. The equivalent noise caused by the linear filter is mitigated with the decoder output stream and the LLR is re-estimated after the equivalent noise mitigation. Furthermore, LLR clipping is introduced in the proposed decoding to avoid the performance degradation due to the incorrect LLRs. The performance of the proposed decoding is evaluated by computer simulation. The proposed decoding achieves about 2dB better BER performance than soft decoding with the exhaustive search algorithm, so called the MLD, at the BER of 10-4, even though the complexity of the proposed decoding is 1/10 as small as that of soft decoding with the exhaustive search.
ER -