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| Presentation | 2009-01-22 10:55 Considerations on the Discontinuous Transmission detection performance of the ACK/NACK signals for E-UTRA uplink control channel Seigo Nakao (Panasonic), Tomohumi Takata (PMCRD), Daichi Imamura, Katsuhiko Hiramatsu (Panasonic)  SIP2008-128 RCS2008-176 |
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| Abstract | (in Japanese) | (See Japanese page) |
| (in English) | HARQ is employed for the 3GPP E-UTRA downlink. ACK/NACK signals from each mobile terminal are multiplexed by CDMA, and transmitted via a PUCCH (Physical Uplink Control CHannel). If the base station detects a NACK signal from the mobile terminal, it re-transmits the downlink data by IR (Incremental Redundancy) which has more gain, since the mobile terminal already stores the received signals of the first transmission. On the other hand, if the base station does not detect NACK nor ACK signals, it re-transmits the same signals to the mobile terminal because it is assumed that the mobile terminal failed to receive the control signal for the assignment of the first transmission. In this manner, in order to utilize the IR gain as much as possible, the base station not only detects the ACK/NACK signals but also detects the termination of the transmission of the ACK/NACK signals from the mobile stations, which is so-called “DTX (Discontinuous Transmission) detection.” However, there is a problem that the DTX detection performance is greatly affected by inter-code interferences in the PUCCH. In this paper, we propose to apply the constellation scrambling for ACK/NACK signals, and consider a new DTX detection scheme in order to enhance the DTX detection performance even with severe inter-code interference effects. | |
| Keyword | (in Japanese) | (See Japanese page) |
| (in English) | Cyclic shift sequence / CDMA / Inter-code interference / Scrambling / HARQ / ACK/NACK / Uplink control channel / | |
| Reference Info. | IEICE Tech. Rep., vol. 108, no. 391, RCS2008-176, pp. 23-28, Jan. 2009. | |
| Paper # | RCS2008-176 | |
| Date of Issue | 2009-01-15 (SIP, 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) | |
| Download PDF | SIP2008-128 RCS2008-176 |
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| Conference Information | |
| Committee | SIP RCS |
| Conference Date | 2009-01-22 - 2009-01-23 |
| Place (in Japanese) | (See Japanese page) |
| Place (in English) | Kumamoto University |
| Topics (in Japanese) | (See Japanese page) |
| Topics (in English) | |
| Paper Information | |
| Registration To | RCS |
| Conference Code | 2009-01-SIP-RCS |
| Language | Japanese |
| Title (in Japanese) | (See Japanese page) |
| Sub Title (in Japanese) | (See Japanese page) |
| Title (in English) | Considerations on the Discontinuous Transmission detection performance of the ACK/NACK signals for E-UTRA uplink control channel |
| Sub Title (in English) | |
| Keyword(1) | Cyclic shift sequence |
| Keyword(2) | CDMA |
| Keyword(3) | Inter-code interference |
| Keyword(4) | Scrambling |
| Keyword(5) | HARQ |
| Keyword(6) | ACK/NACK |
| Keyword(7) | Uplink control channel |
| Keyword(8) | |
| 1st Author's Name | Seigo Nakao |
| 1st Author's Affiliation | Panasonic Corporation (Panasonic) |
| 2nd Author's Name | Tomohumi Takata |
| 2nd Author's Affiliation | Panasonic Mobile Communications R&D Lab. Co., Ltd. (PMCRD) |
| 3rd Author's Name | Daichi Imamura |
| 3rd Author's Affiliation | Panasonic Corporation (Panasonic) |
| 4th Author's Name | Katsuhiko Hiramatsu |
| 4th Author's Affiliation | Panasonic Corporation (Panasonic) |
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| Speaker | Author-1 |
| Date Time | 2009-01-22 10:55:00 |
| Presentation Time | 25 minutes |
| Registration for | RCS |
| Paper # | SIP2008-128, RCS2008-176 |
| Volume (vol) | vol.108 |
| Number (no) | no.390(SIP), no.391(RCS) |
| Page | pp.23-28 |
| #Pages | 6 |
| Date of Issue | 2009-01-15 (SIP, RCS) |
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