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Paper Abstract and Keywords
Presentation 2013-12-19 09:25
Orthogonal Code-Multiplexed Frequency-Domain Single-Carrier Spread Spectrum
Amnart Boonkajay, Fumiyuki Adachi (Tohoku Univ.) RCS2013-224
Abstract (in Japanese) (See Japanese page) 
(in English) The authors have proposed a frequency-domain single-carrier spread spectrum (SC-FDSS) transmission technique, which achieves better bit-error rate (BER) and better power amplifier-dependent energy efficiency comparing with time-domain spread spectrum (TDSS). However, its wider transmission bandwidth leads to low spectrum efficiency, implying that a multiplexing technique is necessary. In this paper, we introduce an orthogonal code multiplexing technique for the FDSS called multi-code single-carrier FDSS (MC-SC-FDSS) for code division multi-access. The signal block to be transmitted is firstly transformed into frequency-domain signal by discrete Fourier transform (DFT), and then code multiplexing is done to achieve narrower transmit bandwidth. Joint frequency-domain equalization based on minimum mean-square error criterion (MMSE-FDE) and de-spreading is carried out for acquiring frequency diversity gain. Theoretical analysis and simulation results in terms of BER and PAPR of both single-code and multi-code SC-FDSS are shown and compared with conventional TDSS and multi-carrier SS (MCSS)
Keyword (in Japanese) (See Japanese page) 
(in English) Single-carrier (SC) transmission / spread spectrum / code-division multiplexing (CDM) / / / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 361, RCS2013-224, pp. 107-112, Dec. 2013.
Paper # RCS2013-224 
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)
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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 English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Orthogonal Code-Multiplexed Frequency-Domain Single-Carrier Spread Spectrum 
Sub Title (in English)  
Keyword(1) Single-carrier (SC) transmission  
Keyword(2) spread spectrum  
Keyword(3) code-division multiplexing (CDM)  
1st Author's Name Amnart Boonkajay  
1st Author's Affiliation Tohoku University (Tohoku Univ.)
2nd Author's Name Fumiyuki Adachi  
2nd Author's Affiliation Tohoku University (Tohoku Univ.)
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Date Time 2013-12-19 09:25:00 
Presentation Time 25 
Registration for RCS 
Paper # IEICE-RCS2013-224 
Volume (vol) IEICE-113 
Number (no) no.361 
Page pp.107-112 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2013-12-11 

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