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Paper Abstract and Keywords
Presentation 2022-03-02 10:00
A Constant Amplitude OFDM Scheme to Compensate for Phase Noise over Millimeter Wave Wireless Channels
Yu Terauchi, Yuyuan Chang, Kazuhiko Fukawa (Tokyo Tech) RCS2021-251
Abstract (in Japanese) (See Japanese page) 
(in English) Since orthogonal frequency-division multiplexing (OFDM) has been adopted in many wireless communications, it is expected to be employed in future millimeter wave wireless systems. However, OFDM has a serious problem of high peak-to-average~power ratio (PAPR) due to multiplexing of many subcarrier signals. In order to minimize the PAPR, this report focuses on the constant-amplitude OFDM (CA-OFDM) method, which decomposes an OFDM signal into two constant-amplitude signals, and then applies CA-OFDM to millimeter wave communications. In the millimeter wave wireless systems, CMOS PLL synthesizers generate the phase noise (PN), which seriously degrades transmission performances. To alleviate the degradation due to PN, the two constant-amplitude signals are located adjacent to each other and then transmitted so that the difference in PN between them can be minimized. On the receiver side, frequency-domain equalization (FDE) under the minimum mean square error (MMSE) criterion is employed to reduce inter-symbol interference (ISI) caused by delayed propagation paths. In addition, an iterative process performs decision-directed phase noise compensation (DD-PNC) to estimate and compensate for PN. Computer simulations under multipath channels with PN demonstrate that the proposed scheme can improve the average packet error rate (PER) performance drastically.
Keyword (in Japanese) (See Japanese page) 
(in English) millimeter wave communications / OFDM / PAPR / constant-amplitude OFDM / phase noise / / /  
Reference Info. IEICE Tech. Rep., vol. 121, no. 391, RCS2021-251, pp. 1-6, March 2022.
Paper # RCS2021-251 
Date of Issue 2022-02-23 (RCS) 
ISSN Online edition: ISSN 2432-6380
Copyright
and
reproduction		 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 RCS2021-251

Conference Information
Committee RCS SR SRW  
Conference Date 2022-03-02 - 2022-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Online 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2022-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Constant Amplitude OFDM Scheme to Compensate for Phase Noise over Millimeter Wave Wireless Channels 
Sub Title (in English)  
Keyword(1) millimeter wave communications  
Keyword(2) OFDM  
Keyword(3) PAPR  
Keyword(4) constant-amplitude OFDM  
Keyword(5) phase noise  
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1st Author's Name Yu Terauchi  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
2nd Author's Name Yuyuan Chang  
2nd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
3rd Author's Name Kazuhiko Fukawa  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Tech)
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Speaker Author-1 
Date Time 2022-03-02 10:00:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2021-251 
Volume (vol) vol.121 
Number (no) no.391 
Page pp.1-6 
#Pages 6 
Date of Issue 2022-02-23 (RCS) 

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