Paper Abstract and Keywords |
Presentation |
2015-08-18 11:40
On Interference Reduction Performance in Use of Remaining Array Freedom over The Number of Interference to Mitigate Degradation Due to Channel Fluctuation
-- Relation between Interference Subspace and Exporation Value from Past Channels -- Makoto Taromaru, Mai Ohta, Ryosuke Ono, Daichi Tokuyasu (Fukuoka Univ.) RCS2015-152 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Some papers reported that a zero-forcing (ZF) adaptive array antenna or
multi-user MIMO system can be robust against channel variation due to fading and/or movement of the interfering terminals when the combining weights are set to cancel not only the most recent channels but also the previous ones of the interferences. This report discusses the mechanism to cancel the interferencesfocusing on the relation between the interference subspace spanned by the channel vectors of the interferences and the combining weight vector. In this report, it is shown that the ZF weight vector both for the most recent and the next previous channels can be still ZF for the current channels as well as these can be approximated by linear extrapolation of the former channels. It is also discussed how the subspace dimension should be extended to get the optimum weights in case the channels are deviating from the linearly extrapolated ones. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
adaptive array antenna / degree of freedom / MIMO / diversity / zero-forcing / / / |
Reference Info. |
IEICE Tech. Rep., vol. 115, no. 181, RCS2015-152, pp. 119-122, Aug. 2015. |
Paper # |
RCS2015-152 |
Date of Issue |
2015-08-10 (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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RCS2015-152 |
Conference Information |
Committee |
RCS SAT |
Conference Date |
2015-08-17 - 2015-08-18 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Fukuoka Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2015-08-RCS-SAT |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
On Interference Reduction Performance in Use of Remaining Array Freedom over The Number of Interference to Mitigate Degradation Due to Channel Fluctuation |
Sub Title (in English) |
Relation between Interference Subspace and Exporation Value from Past Channels |
Keyword(1) |
adaptive array antenna |
Keyword(2) |
degree of freedom |
Keyword(3) |
MIMO |
Keyword(4) |
diversity |
Keyword(5) |
zero-forcing |
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1st Author's Name |
Makoto Taromaru |
1st Author's Affiliation |
Fukuoka University (Fukuoka Univ.) |
2nd Author's Name |
Mai Ohta |
2nd Author's Affiliation |
Fukuoka University (Fukuoka Univ.) |
3rd Author's Name |
Ryosuke Ono |
3rd Author's Affiliation |
Fukuoka University (Fukuoka Univ.) |
4th Author's Name |
Daichi Tokuyasu |
4th Author's Affiliation |
Fukuoka University (Fukuoka Univ.) |
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Speaker |
Author-1 |
Date Time |
2015-08-18 11:40:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
RCS2015-152 |
Volume (vol) |
vol.115 |
Number (no) |
no.181 |
Page |
pp.119-122 |
#Pages |
4 |
Date of Issue |
2015-08-10 (RCS) |
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