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Paper Abstract and Keywords
Presentation 2014-03-05 14:20
Performance Evaluation of Combining Calibration with Real-Time Multiuser MIMO Transmission Equipment Using Implicit Feedback
Hayato Fukuzono, Tomoki Murakami, Riichi Kudo, Shoko Shinohara, Yasushi Takatori, Masato Mizoguchi (NTT) RCS2013-385
Abstract (in Japanese) (See Japanese page) 
(in English) It is necessary to calibrate uplink channel state information estimated for transmit beamforming on multiuser multiple-input multiple-output (MIMO) systems with implicit feedback (IFB). We propose combining calibration, a scheme in which multiple calibration coefficients are calculated and then combined to improve the calibration accuracy. In this paper, we develop real-time multiuser MIMO transmission equipment with an IFB mode using field programmable gate array (FPGA), and we evaluate performance of combining calibration by it in an actual radio environment. We show that combining calibration has better performance compared to a conventional, no-combining calibration scheme.
Keyword (in Japanese) (See Japanese page) 
(in English) multiuser MIMO / implicit feedback / calibration / OFDM / FPGA / / /  
Reference Info. IEICE Tech. Rep., vol. 113, no. 456, RCS2013-385, pp. 475-480, March 2014.
Paper # RCS2013-385 
Date of Issue 2014-02-24 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
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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 SR SRW  
Conference Date 2014-03-03 - 2014-03-05 
Place (in Japanese) (See Japanese page) 
Place (in English) Waseda Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2014-03-RCS-SR-SRW 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Performance Evaluation of Combining Calibration with Real-Time Multiuser MIMO Transmission Equipment Using Implicit Feedback 
Sub Title (in English)  
Keyword(1) multiuser MIMO  
Keyword(2) implicit feedback  
Keyword(3) calibration  
Keyword(4) OFDM  
Keyword(5) FPGA  
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1st Author's Name Hayato Fukuzono  
1st Author's Affiliation Nippon Telegraph and Telephone (NTT)
2nd Author's Name Tomoki Murakami  
2nd Author's Affiliation Nippon Telegraph and Telephone (NTT)
3rd Author's Name Riichi Kudo  
3rd Author's Affiliation Nippon Telegraph and Telephone (NTT)
4th Author's Name Shoko Shinohara  
4th Author's Affiliation Nippon Telegraph and Telephone (NTT)
5th Author's Name Yasushi Takatori  
5th Author's Affiliation Nippon Telegraph and Telephone (NTT)
6th Author's Name Masato Mizoguchi  
6th Author's Affiliation Nippon Telegraph and Telephone (NTT)
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Speaker Author-1 
Date Time 2014-03-05 14:20:00 
Presentation Time 20 minutes 
Registration for RCS 
Paper # RCS2013-385 
Volume (vol) vol.113 
Number (no) no.456 
Page pp.475-480 
#Pages
Date of Issue 2014-02-24 (RCS) 


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