Paper Abstract and Keywords |
Presentation |
2009-03-02 11:30
Space-Time Coding Scheme for Forward Link Multiuser STBC-OFDM Systems Shingo Sasaki, Takahiko Saba (Chiba Inst. of Tech) CAS2008-107 SIP2008-170 CS2008-81 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
In forward link multiuser space-time block coded orthogonal frequency division multiplexing (STBC--OFDM) systems, the signal-to-noise power ratio (SNR) of each user's received signal and the fading effect of each subcarrier are different from others. Thus, when subcarriers are not properly assigned to users, intensive bit errors occur in a specific user. This causes a burst error in such a user, and the number of correctable bits decreases. As a result, the bit error rate (BER) performance of the overall system is degraded. In this paper, we propose a space-time coding scheme which distributes bit errors among users. In our coding scheme, by letting several users share a subcarrier, bit errors are distributed among users. Therefore our coding scheme prevents the occurrence of intensive bit errors. Simulation results show that the BER performance of our system with two or three transmit antennas is better than that of the system with the conventional coding scheme even when proper subcarrier assignment schemes are not employed. Thus, our coding scheme can improve the BER performance, while it relaxes the requirement of subcarrier assignment. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
STBC / OFDM / / / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 108, no. 455, CS2008-81, pp. 37-42, March 2009. |
Paper # |
CS2008-81 |
Date of Issue |
2009-02-23 (CAS, SIP, CS) |
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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CAS2008-107 SIP2008-170 CS2008-81 |
Conference Information |
Committee |
CAS CS SIP |
Conference Date |
2009-03-02 - 2009-03-03 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Nagaragawa Convention Center |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Network processors, signal processing for communications, wireless LAN/PAN, etc. |
Paper Information |
Registration To |
CS |
Conference Code |
2009-03-CAS-CS-SIP |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Space-Time Coding Scheme for Forward Link Multiuser STBC-OFDM Systems |
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STBC |
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OFDM |
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1st Author's Name |
Shingo Sasaki |
1st Author's Affiliation |
Chiba Institute of Technology (Chiba Inst. of Tech) |
2nd Author's Name |
Takahiko Saba |
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Chiba Institute of Technology (Chiba Inst. of Tech) |
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Speaker |
Author-1 |
Date Time |
2009-03-02 11:30:00 |
Presentation Time |
20 minutes |
Registration for |
CS |
Paper # |
CAS2008-107, SIP2008-170, CS2008-81 |
Volume (vol) |
vol.108 |
Number (no) |
no.453(CAS), no.454(SIP), no.455(CS) |
Page |
pp.37-42 |
#Pages |
6 |
Date of Issue |
2009-02-23 (CAS, SIP, CS) |
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