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Paper Abstract and Keywords
Presentation 2013-12-18 17:10
Comparative Study of SC-FDMA and OFDMA Using Turbo SIC Considering Soft-Symbol Estimate for MIMO SDM
Chihiro Mori (Tokyo City Univ.), Teruo Kawamura, Hidekazu Taoka (NTT DOCOMO), Mamoru Sawahashi (Tokyo City Univ.) RCS2013-218
Abstract (in Japanese) (See Japanese page) 
(in English) This paper presents comparative study of orthogonal frequency division multiple access (OFDMA) and single-carrier (SC)-FDMA using turbo soft interference canceller (SIC) from the viewpoint of throughput for multiple-input multiple-output (MIMO) spatial division multiplexing (SDM). In turbo SIC, interferences from other transmission streams are generated based on log-likelihood ratio (LLR) at turbo decoder output and subtracted from the received signal iteratively associated with linear minimum mean-square error (LMMSE) filter. Hence, we compare the throughput performance levels for generation methods of soft-symbol estimates of other streams based on the extrinsic LLR and the a posteriori LLR at the Max-Log-MAP decoder output. We show by computer simulations that the performance difference of turbo SIC based on the a posteriori LLR and extrinsic LLR from the viewpoints of average block error rate and throughputs. We also show that the superior throughput performance OFDMA compared to SC-FDMA with 16QAM and 64QAM schemes when using turbo SIC for 2-by-2 and 4-by-4 MIMO SDM.
Keyword (in Japanese) (See Japanese page) 
(in English) MIMO SDM / OFDMA / single-carrier FDMA / turbo SIC / LMMSE channel estimation / LLR / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 361, RCS2013-218, pp. 71-76, Dec. 2013.
Paper # RCS2013-218 
Date of Issue 2013-12-11 (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)
Download PDF RCS2013-218

Conference Information
Committee RCS NS  
Conference Date 2013-12-18 - 2013-12-20 
Place (in Japanese) (See Japanese page) 
Place (in English) Sunport Hall Takamatsu 
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 2013-12-RCS-NS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Comparative Study of SC-FDMA and OFDMA Using Turbo SIC Considering Soft-Symbol Estimate for MIMO SDM 
Sub Title (in English)  
Keyword(1) MIMO SDM  
Keyword(2) OFDMA  
Keyword(3) single-carrier FDMA  
Keyword(4) turbo SIC  
Keyword(5) LMMSE channel estimation  
Keyword(6) LLR  
1st Author's Name Chihiro Mori  
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 NTT DOCOMO (NTT DOCOMO)
4th Author's Name Mamoru Sawahashi  
4th Author's Affiliation Tokyo City University (Tokyo City Univ.)
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Date Time 2013-12-18 17:10:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2013-218 
Volume (vol) IEICE-113 
Number (no) no.361 
Page pp.71-76 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2013-12-11 

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