Paper Abstract and Keywords |
Presentation |
2012-07-20 13:50
Non-orthogonal Access with Random Beamforming and Intra-beam SIC for Cellular MIMO Downlink Kenichi Higuchi (Tokyo Univ. of Science), Yoshihisa Kishiyama (NTT DOCOMO) RCS2012-89 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
We consider the non-orthogonal access with successive interference canceller (SIC) in cellular multiple-input multiple-output (MIMO) downlink. Taking into account the overhead for the downlink reference signaling for channel estimation at the user terminal in the case of non-orthogonal multiuser multiplexing and the applicability of the SIC receiver in MIMO downlink, we propose the intra-beam superposition coding of multiuser signal at the transmitter and the spatial filtering of inter-beam interference followed by the intra-beam SIC at the user terminal receiver. Intra-beam SIC cancels out the inter-user interference within a beam. Furthermore, the transmitter beamforming (precoding) matrix is controlled based on the open loop-type random beamforming, which is very efficient in terms of the amount of feedback information from the user terminal. From the simulation results, we show that the proposed non-orthogonal access with random beamforming and intra-beam SIC achieves better total and cell-edge user throughput simultaneously compared with the orthogonal access. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Cellular system / Downlink / Non-orthogonal multiple access / SIC / MIMO / Random beamforming / / |
Reference Info. |
IEICE Tech. Rep., vol. 112, no. 132, RCS2012-89, pp. 85-90, July 2012. |
Paper # |
RCS2012-89 |
Date of Issue |
2012-07-12 (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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RCS2012-89 |
Conference Information |
Committee |
RCS NS USN |
Conference Date |
2012-07-19 - 2012-07-20 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Iwate Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Fixed/Wireless Network, Hand Over, Relay, Distributed MIMO, Mobile Ad-hoc Network, Ubiquitous Sensor Network, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2012-07-RCS-NS-USN |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Non-orthogonal Access with Random Beamforming and Intra-beam SIC for Cellular MIMO Downlink |
Sub Title (in English) |
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Cellular system |
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Downlink |
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Non-orthogonal multiple access |
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SIC |
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MIMO |
Keyword(6) |
Random beamforming |
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1st Author's Name |
Kenichi Higuchi |
1st Author's Affiliation |
Tokyo University of Science (Tokyo Univ. of Science) |
2nd Author's Name |
Yoshihisa Kishiyama |
2nd Author's Affiliation |
NTT DOCOMO, INC. (NTT DOCOMO) |
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Speaker |
Author-1 |
Date Time |
2012-07-20 13:50:00 |
Presentation Time |
25 minutes |
Registration for |
RCS |
Paper # |
RCS2012-89 |
Volume (vol) |
vol.112 |
Number (no) |
no.132 |
Page |
pp.85-90 |
#Pages |
6 |
Date of Issue |
2012-07-12 (RCS) |
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