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Paper Abstract and Keywords
Presentation 2011-12-16 14:05
Performance of Space Orthogonal Resource Transmit Diversity for Delay Spreads in PUCCH Using Cyclic Shift CDMA
Yuichiro Hikosaka (Tokyo City Univ.), Teruo Kawamura (NTT DOCOMO), Hidekazu Taoka (DOCOMO Europe Labs.), Mamoru Sawahashi (Tokyo City Univ.) RCS2011-258
Abstract (in Japanese) (See Japanese page) 
(in English) This paper investigates the block error rate (BLER) performance of space orthogonal-resource transmit diversity (SORTD) against delay spreads for 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). Channel estimation accuracy using a reference signal (RS) becomes a bottleneck to achieving a high diversity gain from SORTD under the highly channel-loaded conditions. This is because the inter-code interference due to frequency selectivity deteriorates the channel estimation accuracy particularly in a longer delay spread channel. Hence, we investigate the combined effect of SORTD and hybrid RS multiplexing using block spread (BS) and cyclic shift (CS) for a larger number of multiplexed PUCCHs such as K = 12. Computer simulation results show that SORTD particularly combined with hybrid RS multiplexing is effective in decreasing the required received signal-to-noise power ratio (SNR) that satisfies the target BLER for the PUCCH in the LTE uplink.
Keyword (in Japanese) (See Japanese page) 
(in English) Mobile communications / LTE / Control channel / Cyclic shift / Transmit diversity / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 345, RCS2011-258, pp. 153-158, Dec. 2011.
Paper # RCS2011-258 
Date of Issue 2011-12-08 (RCS) 
ISSN Print edition: ISSN 0913-5685  Online edition: ISSN 2432-6380
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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Conference Information
Committee NS RCS  
Conference Date 2011-12-15 - 2011-12-16 
Place (in Japanese) (See Japanese page) 
Place (in English) Yamaguchi University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Ad-hoc Network, Ubiquitous Network, Wireless Communication, security, Multi-Access Network 
Paper Information
Registration To RCS 
Conference Code 2011-12-NS-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance of Space Orthogonal Resource Transmit Diversity for Delay Spreads in PUCCH Using Cyclic Shift CDMA 
Sub Title (in English)  
Keyword(1) Mobile communications  
Keyword(2) LTE  
Keyword(3) Control channel  
Keyword(4) Cyclic shift  
Keyword(5) Transmit diversity  
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 Hidekazu Taoka  
3rd Author's Affiliation DOCOMO Communications Laboratories Europe GmbH (DOCOMO Europe Labs.)
4th Author's Name Mamoru Sawahashi  
4th Author's Affiliation Tokyo City University (Tokyo City Univ.)
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Date Time 2011-12-16 14:05:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2011-258 
Volume (vol) IEICE-111 
Number (no) no.345 
Page pp.153-158 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2011-12-08 

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