Paper Abstract and Keywords |
Presentation |
2007-09-21 10:40
Performance Analysis of QO-STBC Grouped Multi-User System Said Saleh, Takeshi Hashimoto (Univ.of Electro-Comm.) MoMuC2007-51 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
Multiple-input multiple-output (MIMO) channel configuration for wireless
transmission has been attracting attention widely since it can provide
larger capacity and stronger robustness against fading. However; using
multiple antennas at the subscriber has the drawback that it makes the
subscriber unit larger and more expensive. Because of that Multiple-input
single-output (MISO) is more preferable in downlink CDMA system. Taking
advantage of the multiple antennas at the base station combined with space
time block codes (STBCs), we can attain space diversity. Quasi
orthogonal space-time block code (QO-STBC) is a good choice because it could
be used with complex signals and a simple decoder.
MISO CDMA in selective fading channels suffers from multiple access
interference (MAI). So, we propose a new downlink MISO CDMA system over frequency-
selective fading channel, which has good performance even when the system is overloaded (when the number of users is larger than processing gain).
Combining grouping of users with QO-STBC and using the proper spreading
sequences assigning, we can realize a downlink MISO CDMA
system with overload factor 2 under frequency-selective fading |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
CDMA / MIMO / MISO / QO-STBC / overload factor / downlink / frequency selective fading / |
Reference Info. |
IEICE Tech. Rep., vol. 107, Sept. 2007. |
Paper # |
|
Date of Issue |
2007-09-13 (MoMuC) |
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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MoMuC2007-51 |
Conference Information |
Committee |
MoNA ITE-BCT ITE-CE |
Conference Date |
2007-09-20 - 2007-09-21 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Ehime Univ. |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
|
Paper Information |
Registration To |
MoNA |
Conference Code |
2007-09-MoMuC-ITE-BCT-ITE-CE |
Language |
English |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Performance Analysis of QO-STBC Grouped Multi-User System |
Sub Title (in English) |
|
Keyword(1) |
CDMA |
Keyword(2) |
MIMO |
Keyword(3) |
MISO |
Keyword(4) |
QO-STBC |
Keyword(5) |
overload factor |
Keyword(6) |
downlink |
Keyword(7) |
frequency selective fading |
Keyword(8) |
|
1st Author's Name |
Said Saleh |
1st Author's Affiliation |
The University of Electro-Communications (Univ.of Electro-Comm.) |
2nd Author's Name |
Takeshi Hashimoto |
2nd Author's Affiliation |
The University of Electro-Communications (Univ.of Electro-Comm.) |
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Speaker |
Author-1 |
Date Time |
2007-09-21 10:40:00 |
Presentation Time |
30 minutes |
Registration for |
MoNA |
Paper # |
MoMuC2007-51 |
Volume (vol) |
vol.107 |
Number (no) |
no.224 |
Page |
pp.47-50 |
#Pages |
4 |
Date of Issue |
2007-09-13 (MoMuC) |