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Paper Abstract and Keywords
Presentation 2019-03-07 10:20
A Study on IQ Imbalance Compensation with Decision Feedback Equalizer for Broadband OFDM Systems
Hiroki Inata, Naoto Sasaoka, Tadao Nakagawa, Yoshio Itoh (Tottori Univ.) SIS2018-46
Abstract (in Japanese) (See Japanese page) 
(in English) In order to realize high-speed wireless communications, higher frequency and broader band are being advanced. However amplitude and phase errors occur between the I and Q signal components in the quadrature modulator / demodulator. As a method of blind compensation scheme for IQ imbalance, a method using a constant norm algorithm (CNA) has been proposed. But we confirmed the pattern in which the BER characteristics worsen than before compensation. In this paper, we examined the introduction of decision feedback type equalizer and confirmed its effectiveness from BER characteristics.
Keyword (in Japanese) (See Japanese page) 
(in English) IQ imbalance / quadrature error / OFDM / CNA / blind compensation / Decision Feedback Equalizer / /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 473, SIS2018-46, pp. 49-52, March 2019.
Paper # SIS2018-46 
Date of Issue 2019-02-27 (SIS) 
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 SIS  
Conference Date 2019-03-06 - 2019-03-07 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Univ. Science, Katsushika Campus 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Soft Computing, etc. 
Paper Information
Registration To SIS 
Conference Code 2019-03-SIS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on IQ Imbalance Compensation with Decision Feedback Equalizer for Broadband OFDM Systems 
Sub Title (in English)  
Keyword(1) IQ imbalance  
Keyword(2) quadrature error  
Keyword(3) OFDM  
Keyword(4) CNA  
Keyword(5) blind compensation  
Keyword(6) Decision Feedback Equalizer  
1st Author's Name Hiroki Inata  
1st Author's Affiliation Tottori University (Tottori Univ.)
2nd Author's Name Naoto Sasaoka  
2nd Author's Affiliation Tottori University (Tottori Univ.)
3rd Author's Name Tadao Nakagawa  
3rd Author's Affiliation Tottori University (Tottori Univ.)
4th Author's Name Yoshio Itoh  
4th Author's Affiliation Tottori University (Tottori Univ.)
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Date Time 2019-03-07 10:20:00 
Presentation Time 20 
Registration for SIS 
Paper # SIS2018-46 
Volume (vol) 118 
Number (no) no.473 
Page pp.49-52 
Date of Issue 2019-02-27 (SIS) 

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