Paper Abstract and Keywords |
Presentation |
2017-06-21 13:25
Interference Minimization Through Power Allocation for MU-MIMO Under Time-Varying Channels Ilmiawan Shubhi, Hidekazu Murata (Kyoto Univ.) RCS2017-51 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In a multi-user multiple-input multiple-output (MU-MIMO) system, accurate channel state information is required to set a reliable precoder. Due to the time-varying nature of the channel, however, a mismatch between the precoder and the actual channel can not be avoided. This circumstance causes the signal to be phase-shifted, and the interuser interference arises. To overcome this problem, a recursive power allocation technique based on the predicted interference level is proposed in this paper. First, we extract the Doppler shift information from the pilots sent by the mobile station (MS) to create a predicted channel matrix. After calculating the predicted interference level for all users, recursive power allocation is conducted to minimize the interuser interference at the MSs. Computer simulation shows that our proposed technique enables the time varying MU-MIMO transmission even when the precoder matrix is not frequently updated. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Doppler spread / MU-MIMO / Power allocation / Time-varying channel / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 117, no. 103, RCS2017-51, pp. 7-11, June 2017. |
Paper # |
RCS2017-51 |
Date of Issue |
2017-06-14 (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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RCS2017-51 |
Conference Information |
Committee |
RCS |
Conference Date |
2017-06-21 - 2017-06-23 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Ishigaki Shoukou Kaikan |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2017-06-RCS |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Interference Minimization Through Power Allocation for MU-MIMO Under Time-Varying Channels |
Sub Title (in English) |
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Doppler spread |
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MU-MIMO |
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Power allocation |
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Time-varying channel |
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1st Author's Name |
Ilmiawan Shubhi |
1st Author's Affiliation |
Kyoto University (Kyoto Univ.) |
2nd Author's Name |
Hidekazu Murata |
2nd Author's Affiliation |
Kyoto University (Kyoto Univ.) |
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Speaker |
Author-1 |
Date Time |
2017-06-21 13:25:00 |
Presentation Time |
25 minutes |
Registration for |
RCS |
Paper # |
RCS2017-51 |
Volume (vol) |
vol.117 |
Number (no) |
no.103 |
Page |
pp.7-11 |
#Pages |
5 |
Date of Issue |
2017-06-14 (RCS) |
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