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| Presentation | 2005-03-04 09:25 Application of cyclic delay transmit diversity to DS-CDMA using frequency-domain equalization Ryoko Kawauchi, Kazuaki Takeda, Fumiyuki Adachi (Tohoku Univ.) Link to ES Tech. Rep. Archives:  MW2004-302 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | Recently, the joint use of frequency-domain equalization (FDE) and delay transmit diversity (DTD) has been studied for improving the transmission performance. In DTD, the same signal is transmitted from different antennas after adding different time delays to increase the equivalent number of propagation paths, thereby increasing the frequency-selectivity and hence improving the bit error rate (BER) performance by the use of FDE. However, the BER performance degrades if the maximum time delay added to antennas plus the maximum time delay of the channel exceeds the guard interval (GI). To avoid this problem, in this paper, we propose the joint use of cyclic transmit diversity (CDTD) and FDE. In CDTD, different cyclic delays are added to the chip sequence and then transmitted from different antennas. Unlike DTD, the achievable BER performance improves as the added cyclic delay increases. The performance achievable with CDTD is evaluated by computer simulation and compared with that with DTD. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | DS-CDMA / Delay Transmit Diversity (DTD) / Cyclic Delay Transmit Diversity (CDTD) / Frequency-domain equalization / / / / | |
| Reference Info. | IEICE Tech. Rep., vol. 104, no. 680, RCS2004-392, pp. 13-18, March 2005. | |
| Paper # | RCS2004-392 | |
| Date of Issue | 2005-02-25 (WBS, AP, RCS, MoMuC, MW) | |
| ISSN | Print edition: ISSN 0913-5685 | |
| 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) | |
| Download PDF | Link to ES Tech. Rep. Archives: MW2004-302 |
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| Conference Information | |
| Committee | RCS AP WBS MW MoNA |
| Conference Date | 2005-03-02 - 2005-03-04 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Yokosuka Research Park |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | Mobile Communications Workshop |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2005-03-RCS-AP-WBS-MW-MoNA |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Application of cyclic delay transmit diversity to DS-CDMA using frequency-domain equalization |
| Sub Title (in English) | |
| Keyword(1) | DS-CDMA |
| Keyword(2) | Delay Transmit Diversity (DTD) |
| Keyword(3) | Cyclic Delay Transmit Diversity (CDTD) |
| Keyword(4) | Frequency-domain equalization |
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| 1st Author's Name | Ryoko Kawauchi |
| 1st Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 2nd Author's Name | Kazuaki Takeda |
| 2nd Author's Affiliation | Tohoku University (Tohoku Univ.) |
| 3rd Author's Name | Fumiyuki Adachi |
| 3rd Author's Affiliation | Tohoku University (Tohoku Univ.) |
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| Speaker | Author-1 |
| Date Time | 2005-03-04 09:25:00 |
| Presentation Time | 20 minutes |
| Registration for | RCS |
| Paper # | WBS2004-124, AP2004-305, RCS2004-392, MoMuC2004-175, MW2004-302 |
| Volume (vol) | vol.104 |
| Number (no) | no.674(WBS), no.677(AP), no.680(RCS), no.683(MoMuC), no.686(MW) |
| Page | pp.13-18 |
| #Pages | 6 |
| Date of Issue | 2005-02-25 (WBS, AP, RCS, MoMuC, MW) |
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