Paper Abstract and Keywords |
Presentation |
2009-07-16 11:00
Cooperative Diversity Can Mitigate Keyhole Effects in Wireless MIMO Systems Oussama Souihli, Tomoaki Ohtsuki (Keio Univ.) RCS2009-53 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
A MIMO keyhole is a propagation environment such that the channel gain matrix has unit rank (single degree of freedom), irrespective of the number of deployed antennas or their correlations (spacing), thereby reducing the MIMO channel capacity to that of a SISO channel. Related literature seems to consider such degeneration hopeless. Contrary to this general belief, this paper demonstrates that cooperative diversity can mitigate keyhole effects. Precisely, provided that the source-relay channel is keyhole-free, we show that there exists a ``cutoff'' relay transmit power above which keyhole effects can be mitigated even when both the source-destination and the relay-destination channels incur keyhole effect. We explicit the closed form of this power threshold as function of the source transmit power and the channel matrices brought into play in the relay channel. Numerical examples confirm the relevance of our claim. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
MIMO / keyhole / Relay Networks / Cooperative Diversity / Rayleigh Fading / Information Theory / Shannon Capacity / |
Reference Info. |
IEICE Tech. Rep., vol. 109, no. 130, RCS2009-53, pp. 1-6, July 2009. |
Paper # |
RCS2009-53 |
Date of Issue |
2009-07-09 (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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RCS2009-53 |
Conference Information |
Committee |
NS RCS |
Conference Date |
2009-07-16 - 2009-07-17 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Hokkaido University (Hokkaido) |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Fixed/Wireless Network, Hand Over, Distributed MIMO, Mobile Ad-hoc Network |
Paper Information |
Registration To |
RCS |
Conference Code |
2009-07-NS-RCS |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Cooperative Diversity Can Mitigate Keyhole Effects in Wireless MIMO Systems |
Sub Title (in English) |
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Keyword(1) |
MIMO |
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keyhole |
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Relay Networks |
Keyword(4) |
Cooperative Diversity |
Keyword(5) |
Rayleigh Fading |
Keyword(6) |
Information Theory |
Keyword(7) |
Shannon Capacity |
Keyword(8) |
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1st Author's Name |
Oussama Souihli |
1st Author's Affiliation |
Keio University (Keio Univ.) |
2nd Author's Name |
Tomoaki Ohtsuki |
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Keio University (Keio Univ.) |
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Speaker |
Author-1 |
Date Time |
2009-07-16 11:00:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
RCS2009-53 |
Volume (vol) |
vol.109 |
Number (no) |
no.130 |
Page |
pp.1-6 |
#Pages |
6 |
Date of Issue |
2009-07-09 (RCS) |
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