Paper Abstract and Keywords |
Presentation |
2011-07-21 09:55
Performance of Outer-Loop Control for AMC Based on Mutual Information in MIMO-OFDM Downlink Teppei Ebihara (Tokyo City Univ.), Hidekazu Taoka (DOCOMO Europe Labs.), Nobuhiko Miki (NTT DOCOMO), Mamoru Sawahashi (Tokyo City Univ.) RCS2011-77 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper presents the performance of outer-loop control for adaptive modulation and coding (AMC) using mutual information (MI) based mapping between the block error rate (BLER) and received signal-to-interference plus noise power ratio (SINR) in multiple-input multiple-output (MIMO)-orthogonal frequency division multiplexing (OFDM) downlink employing maximum likelihood detection (MLD). In AMC, we generate a mapping table between the BLER and MI per bit in advance, which is computed from the received SINR, assuming typical channel conditions including the path model and fading maximum Doppler frequency. Then, in the proposed outer-loop control, the measured MI per bit value for selecting the best modulation and coding scheme (MCS) is adjusted so that the measured BLER after turbo decoding satisfies the prescribed target value. Computer simulation results show that the outer-loop control achieves almost the same throughput as that with a mapping table assuming channel conditions identical to those for the actual measurement, while achieving the nearly identical target BLER. Moreover, we show that the best step size, which provides nearly the maximum throughput, differs according to the change in the maximum Doppler frequency in contrast to the relative feedback delay of the AMC loop. Nevertheless, it is insensitive to the target BLER value. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Mobile communications / MIMO / AMC / Mutual information / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 145, RCS2011-77, pp. 13-18, July 2011. |
Paper # |
RCS2011-77 |
Date of Issue |
2011-07-14 (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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RCS2011-77 |
Conference Information |
Committee |
RCS NS |
Conference Date |
2011-07-21 - 2011-07-22 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Asahikawa Civic Culture Hall |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Fixed/Wireless Network, Hand Over, Relay, Distributed MIMO, Mobile Ad-hoc Network, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2011-07-RCS-NS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Performance of Outer-Loop Control for AMC Based on Mutual Information in MIMO-OFDM Downlink |
Sub Title (in English) |
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Keyword(1) |
Mobile communications |
Keyword(2) |
MIMO |
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AMC |
Keyword(4) |
Mutual information |
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1st Author's Name |
Teppei Ebihara |
1st Author's Affiliation |
Tokyo City University (Tokyo City Univ.) |
2nd Author's Name |
Hidekazu Taoka |
2nd Author's Affiliation |
DOCOMO Communications Laboratories Europe GmbH (DOCOMO Europe Labs.) |
3rd Author's Name |
Nobuhiko Miki |
3rd Author's Affiliation |
NTT DOCOMO (NTT DOCOMO) |
4th Author's Name |
Mamoru Sawahashi |
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Tokyo City University (Tokyo City Univ.) |
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Speaker |
Author-4 |
Date Time |
2011-07-21 09:55:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
RCS2011-77 |
Volume (vol) |
vol.111 |
Number (no) |
no.145 |
Page |
pp.13-18 |
#Pages |
6 |
Date of Issue |
2011-07-14 (RCS) |
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