MIMO Precoding Effective for Path-Loss Imbalance and Antenna Correlation in Cooperative Base Station Systems

Yasuyuki HATAKAWA; Masashi FUSHIKI; Satoshi KONISHI

doi:10.1587/transcom.E94.B.243

MIMO Precoding Effective for Path-Loss Imbalance and Antenna Correlation in Cooperative Base Station Systems

Yasuyuki HATAKAWA, Masashi FUSHIKI, Satoshi KONISHI

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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.

Publication: IEICE TRANSACTIONS on Communications Vol.E94-B No.1 pp.243-252

Publication Date: 2011/01/01

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Online ISSN: 1745-1345

DOI: 10.1587/transcom.E94.B.243

Type of Manuscript: PAPER

Category: Wireless Communication Technologies

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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},}

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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 -