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".
Copyrights notice
The original paper is in English. Non-English content has been machine-translated and may contain typographical errors or mistranslations. Copyrights notice
본 논문에서는 과부하된 MIMO에 대해 0.7단계 BP 검출을 제안합니다. 제안은 BP를 MMSE 사전 취소 알고리즘과 결합한 후 일반 BP 감지를 결합합니다. 과부하된 MIMO 시스템에서 인자 그래프의 루프는 BP 감지의 복조 성능을 저하시킵니다. MMSE 사전 취소는 요인 그래프의 연결 수 또는 계수 값을 줄여 사후 확률의 수렴 특성을 향상시킵니다. 컴퓨터 시뮬레이션을 통해 얻은 수치 결과는 제안된 XNUMX단계 BP 검출의 BER이 MMSE 블록 크기가 XNUMX이고 MMSE 블록 수가 XNUMX일 때 낮은 비트 에너지 범위에서 MMSE 사전 취소를 사용하는 기존 BP보다 성능이 우수함을 보여줍니다. 복잡도 감소를 위해 사전 취소를 적용할 경우 제안 방식은 기존 방식에 비해 성능 향상 정도는 제한적이지만 곱셈 연산과 합산 연산을 XNUMX만큼 감소시킨다.
Risa SHIOI
Keio University
Takashi IMAMURA
Keio University
Yukitoshi SANADA
Keio University
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부
Risa SHIOI, Takashi IMAMURA, Yukitoshi SANADA, "Two-Stage Belief Propagation Detection with MMSE Pre-Cancellation for Overloaded MIMO" in IEICE TRANSACTIONS on Communications,
vol. E105-B, no. 3, pp. 309-317, March 2022, doi: 10.1587/transcom.2021EBP3046.
Abstract: In this paper, two-stage BP detection is proposed for overloaded MIMO. The proposal combines BP with the MMSE pre-cancellation algorithm followed by normal BP detection. In overloaded MIMO systems, the loops in a factor graph degrade the demodulation performance of BP detection. MMSE pre-cancellation reduces the number of connections or coefficient values in the factor graph which improves the convergence characteristics of posteriori probabilities. Numerical results obtained through computer simulation show that the BERs of the proposed two-stage BP detection outperforms the conventional BP with MMSE pre-cancellation in a low bit energy range when the MMSE block size is four and the number of MMSE blocks is one. When the pre-cancellation is applied for complexity reduction, the proposed scheme reduces multiplication operations and summation operations by the same factor of 0.7 though the amount of the performance improvement to the conventional scheme is limited.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.2021EBP3046/_p
부
@ARTICLE{e105-b_3_309,
author={Risa SHIOI, Takashi IMAMURA, Yukitoshi SANADA, },
journal={IEICE TRANSACTIONS on Communications},
title={Two-Stage Belief Propagation Detection with MMSE Pre-Cancellation for Overloaded MIMO},
year={2022},
volume={E105-B},
number={3},
pages={309-317},
abstract={In this paper, two-stage BP detection is proposed for overloaded MIMO. The proposal combines BP with the MMSE pre-cancellation algorithm followed by normal BP detection. In overloaded MIMO systems, the loops in a factor graph degrade the demodulation performance of BP detection. MMSE pre-cancellation reduces the number of connections or coefficient values in the factor graph which improves the convergence characteristics of posteriori probabilities. Numerical results obtained through computer simulation show that the BERs of the proposed two-stage BP detection outperforms the conventional BP with MMSE pre-cancellation in a low bit energy range when the MMSE block size is four and the number of MMSE blocks is one. When the pre-cancellation is applied for complexity reduction, the proposed scheme reduces multiplication operations and summation operations by the same factor of 0.7 though the amount of the performance improvement to the conventional scheme is limited.},
keywords={},
doi={10.1587/transcom.2021EBP3046},
ISSN={1745-1345},
month={March},}
부
TY - JOUR
TI - Two-Stage Belief Propagation Detection with MMSE Pre-Cancellation for Overloaded MIMO
T2 - IEICE TRANSACTIONS on Communications
SP - 309
EP - 317
AU - Risa SHIOI
AU - Takashi IMAMURA
AU - Yukitoshi SANADA
PY - 2022
DO - 10.1587/transcom.2021EBP3046
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E105-B
IS - 3
JA - IEICE TRANSACTIONS on Communications
Y1 - March 2022
AB - In this paper, two-stage BP detection is proposed for overloaded MIMO. The proposal combines BP with the MMSE pre-cancellation algorithm followed by normal BP detection. In overloaded MIMO systems, the loops in a factor graph degrade the demodulation performance of BP detection. MMSE pre-cancellation reduces the number of connections or coefficient values in the factor graph which improves the convergence characteristics of posteriori probabilities. Numerical results obtained through computer simulation show that the BERs of the proposed two-stage BP detection outperforms the conventional BP with MMSE pre-cancellation in a low bit energy range when the MMSE block size is four and the number of MMSE blocks is one. When the pre-cancellation is applied for complexity reduction, the proposed scheme reduces multiplication operations and summation operations by the same factor of 0.7 though the amount of the performance improvement to the conventional scheme is limited.
ER -