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Paper Abstract and Keywords
Presentation 2017-12-14 10:00
[Poster Presentation] Min-Max Approach to Arbitrary Unicast Transmission in Multi-Way Relay Network with Up and Downlink CSI Error
Yuechi Cao (Kyoto Univ.), Kazunori Hayashi (Osaka City Univ.) WBS2017-44 ITS2017-21 RCC2017-60
Abstract (in Japanese) (See Japanese page) 
(in English) In this paper, we investigate a robust design of multi-way relay precoder for arbitrary unicast transmission (AUT) in the multiple-input multiple-output (MIMO) relay network, where each user having a single antenna communicates with the other user via a relay station (RS) having multiple antennas. We assume that both up and downlink channel state information (CSI) available at the relay is imperfect and the norm of the estimation errors have upper bounds, which are known to the relay. The robust precoder design is formulated as a min-max problem, where the worst case of sum mean-square-error (MSE) at the receivers is minimized over the range of CSI errors under the transmit power constraint of the RS. In the worst-case analysis, the intractable optimization problem is transformed into a tractable form by approximating the cost function. On the other hand, the minimization problem can be transformed into the semi-definite program (SDP) with efficient numerical solutions. The robustness of the proposed design is demonstrated via computer simulations.
Keyword (in Japanese) (See Japanese page) 
(in English) multi-way relay / MIMO / robust precoder design / imperfect CSI / min-max optimization / SDP / /  
Reference Info. IEICE Tech. Rep., vol. 117, no. 348, RCC2017-60, pp. 51-56, Dec. 2017.
Paper # RCC2017-60 
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 WBS2017-44 ITS2017-21 RCC2017-60

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 RCC 
Conference Code 2017-12-ITS-WBS-RCC 
Language English (Japanese title is available) 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Min-Max Approach to Arbitrary Unicast Transmission in Multi-Way Relay Network with Up and Downlink CSI Error 
Sub Title (in English)  
Keyword(1) multi-way relay  
Keyword(2) MIMO  
Keyword(3) robust precoder design  
Keyword(4) imperfect CSI  
Keyword(5) min-max optimization  
Keyword(6) SDP  
1st Author's Name Yuechi Cao  
1st Author's Affiliation Kyoto University (Kyoto Univ.)
2nd Author's Name Kazunori Hayashi  
2nd Author's Affiliation Osaka City University (Osaka City Univ.)
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Date Time 2017-12-14 10:00:00 
Presentation Time 120 
Registration for RCC 
Paper # IEICE-WBS2017-44,IEICE-ITS2017-21,IEICE-RCC2017-60 
Volume (vol) IEICE-117 
Number (no) no.346(WBS), no.347(ITS), no.348(RCC) 
Page pp.51-56 
#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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