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Paper Abstract and Keywords
Presentation 2018-06-22 09:30
Combination of Beamforming with Per-Antenna Power Constraint and Adaptive PAPR Reduction Method Using Null Space in MIMO Channel for Multiuser Massive MIMO-OFDM Transmission
Mikihito Suzuki (Tokyo Univ. of Science), Kiichi Tateishi (NTT DOCOMO), Kenichi Higuchi (Tokyo Univ. of Science) RCS2018-63
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we investigate a combination of the beamforming (BF) with per-antenna power limitation and adaptive peak-to-average power ratio (PAPR) reduction method using null space of multiple-input multiple-output (MIMO) channel in multiuser massive MIMO-orthogonal frequency division multiplexing (OFDM) transmission. To improve the tradeoff between the channel capacity and PAPR, it is necessary to consider both mutually related BF control and PAPR reduction. In the proposed method, PAPR is first suppressed by generating a BF matrix which limits the transmission power variation among transmitter antennas by using a firefly algorithm (FA). The subsequent adaptive PAPR reduction method further reduces the PAPR while mitigating the data throughput degradation due to the interference from the PAPR reduction signal generated by the clipping and filtering (CF) algorithm, by restricting the transmission of PAPR reduction signal only to the null space of MIMO channel. Computer simulation results shows that the proposed method can improve PAPR versus channel capacity characteristics compared with the case using conventional zero forcing (ZF)-based BF.
Keyword (in Japanese) (See Japanese page) 
(in English) PAPR / OFDM / MIMO / Massive MIMO / Beamforming / Clipping and filtering / Firefly algorithm /  
Reference Info. IEICE Tech. Rep., vol. 118, no. 101, RCS2018-63, pp. 167-172, June 2018.
Paper # RCS2018-63 
Date of Issue 2018-06-13 (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. (No. 10GA0019/12GB0052/13GB0056/17GB0034/18GB0034)
Download PDF RCS2018-63

Conference Information
Committee RCS  
Conference Date 2018-06-20 - 2018-06-22 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagasaki University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) First Presentation in IEICE Technical Committee, Railroad Communications, Inter-Vehicle Communications, Road to Vehicle Communications, Resource Control, Scheduling, Wireless Communication Systems, etc. 
Paper Information
Registration To RCS 
Conference Code 2018-06-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Combination of Beamforming with Per-Antenna Power Constraint and Adaptive PAPR Reduction Method Using Null Space in MIMO Channel for Multiuser Massive MIMO-OFDM Transmission 
Sub Title (in English)  
Keyword(1) PAPR  
Keyword(2) OFDM  
Keyword(3) MIMO  
Keyword(4) Massive MIMO  
Keyword(5) Beamforming  
Keyword(6) Clipping and filtering  
Keyword(7) Firefly algorithm  
1st Author's Name Mikihito Suzuki  
1st Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
2nd Author's Name Kiichi Tateishi  
2nd Author's Affiliation NTT DOCOMO, INC. (NTT DOCOMO)
3rd Author's Name Kenichi Higuchi  
3rd Author's Affiliation Tokyo University of Science (Tokyo Univ. of Science)
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Date Time 2018-06-22 09:30:00 
Presentation Time 10 
Registration for RCS 
Paper # IEICE-RCS2018-63 
Volume (vol) IEICE-118 
Number (no) no.101 
Page pp.167-172 
#Pages IEICE-6 
Date of Issue IEICE-RCS-2018-06-13 

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