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 단일 사용자(SU) 협력 기지국(BS) 시스템의 하향링크를 위한 MIMO(Multiple-Input Multiple-Output) 프리코딩 방식을 제안한다. 제안하는 프리코딩 기법은 두 개의 매개변수를 제어함으로써 큰 기지국 간 경로 손실 불균형과 큰 기지국 내 안테나 상관으로 인한 성능 저하를 완화한다. 제안하는 프리코딩 방식은 각 레이어의 진폭을 조절하여 여러 레이어를 다중화한 후 LLR(log Likelihood Ratio)의 작은 절대값이 발생할 확률을 감소시켜 BER(Bit Error Rate)을 감소시킨다. 링크 레벨 시뮬레이션 결과, 제안된 프리코딩 방식은 QPSK 및 코딩율 0.001/5.5, 2.2/의 경우 BER = 0.7인 요구 신호 대 잡음비(SNR)를 1dB, 1dB, 3dB 감소시키는 것을 보여줍니다. 각각 4와 1/2입니다. 제안한 프리코딩 기법은 랭크 적응과 적응 변조를 이용하여 스펙트럼 효율성 측면에서도 평가한 결과, 수신기 안테나당 SNR이 4dB보다 높을 때 스펙트럼 효율성이 향상되는 것으로 나타났다.
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Yasuyuki HATAKAWA, Masashi FUSHIKI, Satoshi KONISHI, "MIMO Precoding Effective for Path-Loss Imbalance and Antenna Correlation in Cooperative Base Station Systems" in IEICE TRANSACTIONS on Communications,
vol. E94-B, no. 1, pp. 243-252, January 2011, doi: 10.1587/transcom.E94.B.243.
Abstract: This paper proposes a multiple-input multiple-output (MIMO) precoding scheme for the down link of single user (SU) cooperative base station (BS) systems. The proposed precoding scheme mitigates the performance degradation caused by large inter-BS path-loss imbalance and large intra-BS antenna correlation by controlling two parameters. The proposed precoding scheme multiplexes the multiple layers by adjusting the amplitude of each layer, and then decreases the occurrence probability of the small absolute value of the log likelihood ratio (LLR), and so reduces the bit error rate (BER). Link level simulation results show that the proposed precoding scheme decreases the required signal-to-noise ratio (SNR) of BER = 0.001 by 5.5 dB, 2.2 dB, and 0.7 dB in the case of QPSK and coding rate 1/1, 3/4, and 1/2 respectively. The proposed precoding scheme is also evaluated in terms of spectrum efficiency using rank adaptation and adaptive modulation, showing that it improves the spectrum efficiency when the SNR per a receiver antenna is higher than 4 dB.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E94.B.243/_p
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@ARTICLE{e94-b_1_243,
author={Yasuyuki HATAKAWA, Masashi FUSHIKI, Satoshi KONISHI, },
journal={IEICE TRANSACTIONS on Communications},
title={MIMO Precoding Effective for Path-Loss Imbalance and Antenna Correlation in Cooperative Base Station Systems},
year={2011},
volume={E94-B},
number={1},
pages={243-252},
abstract={This paper proposes a multiple-input multiple-output (MIMO) precoding scheme for the down link of single user (SU) cooperative base station (BS) systems. The proposed precoding scheme mitigates the performance degradation caused by large inter-BS path-loss imbalance and large intra-BS antenna correlation by controlling two parameters. The proposed precoding scheme multiplexes the multiple layers by adjusting the amplitude of each layer, and then decreases the occurrence probability of the small absolute value of the log likelihood ratio (LLR), and so reduces the bit error rate (BER). Link level simulation results show that the proposed precoding scheme decreases the required signal-to-noise ratio (SNR) of BER = 0.001 by 5.5 dB, 2.2 dB, and 0.7 dB in the case of QPSK and coding rate 1/1, 3/4, and 1/2 respectively. The proposed precoding scheme is also evaluated in terms of spectrum efficiency using rank adaptation and adaptive modulation, showing that it improves the spectrum efficiency when the SNR per a receiver antenna is higher than 4 dB.},
keywords={},
doi={10.1587/transcom.E94.B.243},
ISSN={1745-1345},
month={January},}
부
TY - JOUR
TI - MIMO Precoding Effective for Path-Loss Imbalance and Antenna Correlation in Cooperative Base Station Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 243
EP - 252
AU - Yasuyuki HATAKAWA
AU - Masashi FUSHIKI
AU - Satoshi KONISHI
PY - 2011
DO - 10.1587/transcom.E94.B.243
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E94-B
IS - 1
JA - IEICE TRANSACTIONS on Communications
Y1 - January 2011
AB - This paper proposes a multiple-input multiple-output (MIMO) precoding scheme for the down link of single user (SU) cooperative base station (BS) systems. The proposed precoding scheme mitigates the performance degradation caused by large inter-BS path-loss imbalance and large intra-BS antenna correlation by controlling two parameters. The proposed precoding scheme multiplexes the multiple layers by adjusting the amplitude of each layer, and then decreases the occurrence probability of the small absolute value of the log likelihood ratio (LLR), and so reduces the bit error rate (BER). Link level simulation results show that the proposed precoding scheme decreases the required signal-to-noise ratio (SNR) of BER = 0.001 by 5.5 dB, 2.2 dB, and 0.7 dB in the case of QPSK and coding rate 1/1, 3/4, and 1/2 respectively. The proposed precoding scheme is also evaluated in terms of spectrum efficiency using rank adaptation and adaptive modulation, showing that it improves the spectrum efficiency when the SNR per a receiver antenna is higher than 4 dB.
ER -