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Paper Abstract and Keywords
Presentation 2017-12-14 13:30
[Poster Presentation] A Study on Reduction of Bandwidth in OFDM/PM Scheme with CSS Method
Sho Miyagi, Masato Saito (Univ. of the Ryukyus) WBS2017-55 ITS2017-32 RCC2017-71
Abstract (in Japanese) (See Japanese page) 
(in English) We consider to apply orthogonal frequency division multiplexing (OFDM) schemes to satellite communications systems. OFDM schemes have advantages of their high-speed data transmission and their high frequency efficiency. On the other hand, a major drawback of OFDM is its high peak power. In satellite communications systems, since nonlinear amplifiers are used, OFDM schemes are difficult to be applied due to their high peak power characteristics. Therefore, we consider to apply phase modulated OFDM schemes. Because of this, an OFDM/PM scheme for generating a constant envelope signal by secondary modulation an OFDM signal with PM investigate. However, its bandwidth could be spread. In this paper, we apply cyclic shifted sequences (CSS) method as peak power reduction technique of OFDM signal in order to reduce the bandwidth. We evaluate the effect of Bandwidth Reduction in OFDM/PM scheme with CSS method by computer simulation. Simulation results show that the Bandwidth can be reduced without the BER (bit error rate) performance deterioration.
Keyword (in Japanese) (See Japanese page) 
(in English) Orthogonal Frequency Division Multiplexing (OFDM) / Phase Modulation (PM) / Constant envelope OFDM / OFDM/PM scheme / Cyclic Shifted Sequences (CSS) method / Hermitian symmetry / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 346, WBS2017-55, pp. 111-116, Dec. 2017.
Paper # WBS2017-55 
Date of Issue 2017-12-07 (WBS, ITS, RCC) 
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 WBS2017-55 ITS2017-32 RCC2017-71

Conference Information
Committee ITS WBS RCC  
Conference Date 2017-12-14 - 2017-12-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Tiruru/Okinawa Jichikaikan 
Topics (in Japanese) (See Japanese page) 
Topics (in English) ITS Communications, Reliable Communication and Control, Rader and Sensing, etc. 
Paper Information
Registration To WBS 
Conference Code 2017-12-ITS-WBS-RCC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Reduction of Bandwidth in OFDM/PM Scheme with CSS Method 
Sub Title (in English)  
Keyword(1) Orthogonal Frequency Division Multiplexing (OFDM)  
Keyword(2) Phase Modulation (PM)  
Keyword(3) Constant envelope OFDM  
Keyword(4) OFDM/PM scheme  
Keyword(5) Cyclic Shifted Sequences (CSS) method  
Keyword(6) Hermitian symmetry  
1st Author's Name Sho Miyagi  
1st Author's Affiliation University of the Ryukyus (Univ. of the Ryukyus)
2nd Author's Name Masato Saito  
2nd Author's Affiliation University of the Ryukyus (Univ. of the Ryukyus)
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Date Time 2017-12-14 13:30:00 
Presentation Time 120 
Registration for WBS 
Paper # IEICE-WBS2017-55,IEICE-ITS2017-32,IEICE-RCC2017-71 
Volume (vol) IEICE-117 
Number (no) no.346(WBS), no.347(ITS), no.348(RCC) 
Page pp.111-116 
#Pages IEICE-6 
Date of Issue IEICE-WBS-2017-12-07,IEICE-ITS-2017-12-07,IEICE-RCC-2017-12-07 

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