IEICE TRANSACTIONS on Communications
Implementation and Evaluation of Real-Time Distributed Zero-Forcing Beamforming for Downlink Multi-User MIMO Systems
Summary :
The implementation and experimental evaluations of distributed zero-forcing beamforming (DZFBF) for downlink multi-user multiple-input multiple-output (DL MU-MIMO) systems are presented. In DZFBF, multiple access points (APs) transmit to own desired stations (STAs) at the same time and using the same frequency channel while mitigating inter-cell interference. To clarify the performance and feasibility of DZFBF, we develop a real-time transmission testbed that includes two APs and four STAs; all are implemented using field programmable gate array. For real-time transmission, we also implement a simple weight generation process based on ZF weight using channel state information which is fed back from STAs; it is an extension of the weight generation approach used in DL MU-MIMO systems. By using our testbed, we demonstrate the real-time transmission performance in actual indoor multi-cell environments. These results indicate that DL DZFBF is more effective than DL MU-MIMO with time division multiple access.
- Publication
- IEICE TRANSACTIONS on Communications Vol.E96-B No.10 pp.2521-2529
- Publication Date
- 2013/10/01
- Publicized
- Online ISSN
- 1745-1345
- DOI
- 10.1587/transcom.E96.B.2521
- Type of Manuscript
- Special Section PAPER (Special Section on Recent Progress in Antennas and Propagation in Conjunction with Main Topics of ISAP2012)
- Category
- Wireless Communication Technologies
Authors
Tomoki MURAKAMI
NTT Corporation
Koichi ISHIHARA
NTT Corporation
Riichi KUDO
NTT Corporation
Yusuke ASAI
NTT Corporation
Takeo ICHIKAWA
NTT Corporation
Masato MIZOGUCHI
NTT Corporation
Keyword
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Tomoki MURAKAMI, Koichi ISHIHARA, Riichi KUDO, Yusuke ASAI, Takeo ICHIKAWA, Masato MIZOGUCHI, "Implementation and Evaluation of Real-Time Distributed Zero-Forcing Beamforming for Downlink Multi-User MIMO Systems" in IEICE TRANSACTIONS on Communications,
vol. E96-B, no. 10, pp. 2521-2529, October 2013, doi: 10.1587/transcom.E96.B.2521.
Abstract: The implementation and experimental evaluations of distributed zero-forcing beamforming (DZFBF) for downlink multi-user multiple-input multiple-output (DL MU-MIMO) systems are presented. In DZFBF, multiple access points (APs) transmit to own desired stations (STAs) at the same time and using the same frequency channel while mitigating inter-cell interference. To clarify the performance and feasibility of DZFBF, we develop a real-time transmission testbed that includes two APs and four STAs; all are implemented using field programmable gate array. For real-time transmission, we also implement a simple weight generation process based on ZF weight using channel state information which is fed back from STAs; it is an extension of the weight generation approach used in DL MU-MIMO systems. By using our testbed, we demonstrate the real-time transmission performance in actual indoor multi-cell environments. These results indicate that DL DZFBF is more effective than DL MU-MIMO with time division multiple access.
URL: https://global.ieice.org/en_transactions/communications/10.1587/transcom.E96.B.2521/_p
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@ARTICLE{e96-b_10_2521,
author={Tomoki MURAKAMI, Koichi ISHIHARA, Riichi KUDO, Yusuke ASAI, Takeo ICHIKAWA, Masato MIZOGUCHI, },
journal={IEICE TRANSACTIONS on Communications},
title={Implementation and Evaluation of Real-Time Distributed Zero-Forcing Beamforming for Downlink Multi-User MIMO Systems},
year={2013},
volume={E96-B},
number={10},
pages={2521-2529},
abstract={The implementation and experimental evaluations of distributed zero-forcing beamforming (DZFBF) for downlink multi-user multiple-input multiple-output (DL MU-MIMO) systems are presented. In DZFBF, multiple access points (APs) transmit to own desired stations (STAs) at the same time and using the same frequency channel while mitigating inter-cell interference. To clarify the performance and feasibility of DZFBF, we develop a real-time transmission testbed that includes two APs and four STAs; all are implemented using field programmable gate array. For real-time transmission, we also implement a simple weight generation process based on ZF weight using channel state information which is fed back from STAs; it is an extension of the weight generation approach used in DL MU-MIMO systems. By using our testbed, we demonstrate the real-time transmission performance in actual indoor multi-cell environments. These results indicate that DL DZFBF is more effective than DL MU-MIMO with time division multiple access.},
keywords={},
doi={10.1587/transcom.E96.B.2521},
ISSN={1745-1345},
month={October},}
Copy
TY - JOUR
TI - Implementation and Evaluation of Real-Time Distributed Zero-Forcing Beamforming for Downlink Multi-User MIMO Systems
T2 - IEICE TRANSACTIONS on Communications
SP - 2521
EP - 2529
AU - Tomoki MURAKAMI
AU - Koichi ISHIHARA
AU - Riichi KUDO
AU - Yusuke ASAI
AU - Takeo ICHIKAWA
AU - Masato MIZOGUCHI
PY - 2013
DO - 10.1587/transcom.E96.B.2521
JO - IEICE TRANSACTIONS on Communications
SN - 1745-1345
VL - E96-B
IS - 10
JA - IEICE TRANSACTIONS on Communications
Y1 - October 2013
AB - The implementation and experimental evaluations of distributed zero-forcing beamforming (DZFBF) for downlink multi-user multiple-input multiple-output (DL MU-MIMO) systems are presented. In DZFBF, multiple access points (APs) transmit to own desired stations (STAs) at the same time and using the same frequency channel while mitigating inter-cell interference. To clarify the performance and feasibility of DZFBF, we develop a real-time transmission testbed that includes two APs and four STAs; all are implemented using field programmable gate array. For real-time transmission, we also implement a simple weight generation process based on ZF weight using channel state information which is fed back from STAs; it is an extension of the weight generation approach used in DL MU-MIMO systems. By using our testbed, we demonstrate the real-time transmission performance in actual indoor multi-cell environments. These results indicate that DL DZFBF is more effective than DL MU-MIMO with time division multiple access.
ER -
English
