Paper Abstract and Keywords |
Presentation |
2011-07-21 09:35
Inter-code Interference Canceller for Control Signals Using Cyclic Shift CDMA in LTE Uplink Yuichiro Hikosaka (Tokyo City Univ.), Teruo Kawamura, Nobuhiko Miki (NTT DOCOMO), Mamoru Sawahashi (Tokyo City Univ.) RCS2011-76 |
Abstract |
(in Japanese) |
(See Japanese page) |
(in English) |
This paper proposes an inter-code interference canceller (ICIC) for control signals carried by the physical uplink control channel (PUCCH) in the Long-Term Evolution (LTE) uplink using discrete Fourier transform (DFT)-precoded orthogonal frequency division multiple access (OFDMA). In the proposed ICIC, a soft interference replica of another cyclic-shifted code channel for data symbols is generated from the log-likelihood ratio (LLR) of Max-Log-MAP decoder output and a complex fading envelope estimated using reference signals (RSs), and subtracted from the received signal iteratively. We also propose the hybrid RS, i.e., RS multiplexing employing a combination of block spread (BS) and cyclic shift (CS) for two RS symbols within a slot, to achieve accurate channel estimation. Computer simulation results show that the proposed ICIC associated with the hybrid RS multiplexing using a combination of BS and CS is effective in reducing the required average received signal-to-noise power ratio (SNR) even for 12 PUCCH multiplexing in frequency-selective fading channel with long delay spread. |
Keyword |
(in Japanese) |
(See Japanese page) |
(in English) |
Mobile communications / Single-carrier FDMA / Cyclic shift CDMA / Interference canceller / / / / |
Reference Info. |
IEICE Tech. Rep., vol. 111, no. 145, RCS2011-76, pp. 7-12, July 2011. |
Paper # |
RCS2011-76 |
Date of Issue |
2011-07-14 (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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RCS2011-76 |
Conference Information |
Committee |
RCS NS |
Conference Date |
2011-07-21 - 2011-07-22 |
Place (in Japanese) |
(See Japanese page) |
Place (in English) |
Asahikawa Civic Culture Hall |
Topics (in Japanese) |
(See Japanese page) |
Topics (in English) |
Fixed/Wireless Network, Hand Over, Relay, Distributed MIMO, Mobile Ad-hoc Network, etc. |
Paper Information |
Registration To |
RCS |
Conference Code |
2011-07-RCS-NS |
Language |
Japanese |
Title (in Japanese) |
(See Japanese page) |
Sub Title (in Japanese) |
(See Japanese page) |
Title (in English) |
Inter-code Interference Canceller for Control Signals Using Cyclic Shift CDMA in LTE Uplink |
Sub Title (in English) |
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Keyword(1) |
Mobile communications |
Keyword(2) |
Single-carrier FDMA |
Keyword(3) |
Cyclic shift CDMA |
Keyword(4) |
Interference canceller |
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1st Author's Name |
Yuichiro Hikosaka |
1st Author's Affiliation |
Tokyo City University (Tokyo City Univ.) |
2nd Author's Name |
Teruo Kawamura |
2nd Author's Affiliation |
NTT DOCOMO (NTT DOCOMO) |
3rd Author's Name |
Nobuhiko Miki |
3rd Author's Affiliation |
NTT DOCOMO (NTT DOCOMO) |
4th Author's Name |
Mamoru Sawahashi |
4th Author's Affiliation |
Tokyo City University (Tokyo City Univ.) |
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Speaker |
Author-1 |
Date Time |
2011-07-21 09:35:00 |
Presentation Time |
20 minutes |
Registration for |
RCS |
Paper # |
RCS2011-76 |
Volume (vol) |
vol.111 |
Number (no) |
no.145 |
Page |
pp.7-12 |
#Pages |
6 |
Date of Issue |
2011-07-14 (RCS) |
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