Paper Abstract and Keywords |
Presentation |
2011-11-18 10:05
Indoor experiments of real-time downlink multiuser MIMO transmission for next generation wireless LANs Koichi Ishihara, Yusuke Asai, Riichi Kudo, Takeo Ichikawa, Masato Mizoguchi (NTT) RCS2011-219 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper presents indoor experimental results on an implemented real-time downlink multiuser multiple-input multiple-output (MU-MIMO) transceiver for next generation wireless LAN systems. In the transceiver, channel state information (CSI) is estimated at each station (STA) and fed back to an access point (AP) on a real-time basis. At the AP, transmit beamforming weight for downlink MU-MIMO transmission is calculated by using the estimated CSI. This paper proposes a fast computation scheme for computing zero forcing (ZF) weight in real time. In the proposed scheme, since the ZF weight can be calculated in the order of arrival of CSI feedback frames in a time-domain multiple access (TDMA) manner, the calculation delay time for the transmit weight can be reduced. Indoor experiments with the MU-MIMO transceiver demonstrate its feasibility. We describe experimental results obtained with the implemented downlink MU-MIMO transceiver in an actual indoor environment and show that downlink MU-MIMO transmission can achieve high throughput transmission in next generation wireless LAN systems. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
IEEE802.11ac / MU-MIMO / Wireless LAN / Transmission beamforming / CSI feedback / / / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 289, RCS2011-219, pp. 179-184, Nov. 2011. |
Paper # |
RCS2011-219 |
Date of Issue |
2011-11-09 (RCS) |
ISSN |
Print edition: ISSN 0913-5685 Online edition: ISSN 2432-6380 |
Copyright and reproduction |
All rights are reserved and no part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including photocopy, recording, or any information storage and retrieval system, without permission in writing from the publisher. Notwithstanding, instructors are permitted to photocopy isolated articles for noncommercial classroom use without fee. (License No.: 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034) |
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RCS2011-219 |
Conference Information |
Committee |
AP RCS |
Conference Date |
2011-11-16 - 2011-11-18 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Nagoya Congress Center |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Adaptive Antenna, Equalization, Interference Canceller, MIMO, Wireless Communication Systems, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2011-11-AP-RCS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Indoor experiments of real-time downlink multiuser MIMO transmission for next generation wireless LANs |
Sub Title (in English) |
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Keyword(1) |
IEEE802.11ac |
Keyword(2) |
MU-MIMO |
Keyword(3) |
Wireless LAN |
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Transmission beamforming |
Keyword(5) |
CSI feedback |
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1st Author's Name |
Koichi Ishihara |
1st Author's Affiliation |
NTT (NTT) |
2nd Author's Name |
Yusuke Asai |
2nd Author's Affiliation |
NTT (NTT) |
3rd Author's Name |
Riichi Kudo |
3rd Author's Affiliation |
NTT (NTT) |
4th Author's Name |
Takeo Ichikawa |
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NTT (NTT) |
5th Author's Name |
Masato Mizoguchi |
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NTT (NTT) |
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Speaker |
Author-1 |
Date Time |
2011-11-18 10:05:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
RCS2011-219 |
Volume (vol) |
vol.111 |
Number (no) |
no.289 |
Page |
pp.179-184 |
#Pages |
6 |
Date of Issue |
2011-11-09 (RCS) |
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