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Paper Abstract and Keywords
Presentation 2016-03-02 13:15
Interference Alignment for Multi-User MIMO Interference Channels Based on Estimated Uplink Channels
Fereidoun H. Panahi, Tomoaki Ohtsuki (Keio Univ.), Wenjie Jiang, Yasushi Takatori, Kazuhiro Uehara (NTT) RCS2015-351
Abstract (in Japanese) (See Japanese page) 
(in English) We propose centralized iterative algorithms that jointly determine the optimal transmit and receive filters for a K-user multiple-input multiple-output (MIMO) interference channel (IC). The optimality criterion is based on the achievable sum-rate and the average per user multiplexing gain in the MIMO IC. By allowing channel state information (CSI) exchanged between base stations (BSs) and a central unit (CU), we use a feedback topology where a CU collects local CSIs from all BSs, computes all transmit and receive filters and sends them to corresponding user-BS pairs. Note that the local CSIs at BSs are obtained from the estimation of the channel states during the so-called uplink-training phase. At the CU, we propose iterative algorithms utilizing alternating optimization strategy to design the transmit and receive filters.
Keyword (in Japanese) (See Japanese page) 
(in English) Interference alignment (IA) / Channel state information (CSI) / Sum-rate maximization / / / / /  
Reference Info. IEICE Tech. Rep., vol. 115, no. 472, RCS2015-351, pp. 109-114, March 2016.
Paper # RCS2015-351 
Date of Issue 2016-02-24 (RCS) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
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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 RCS2015-351

Conference Information
Committee RCS CCS SR SRW  
Conference Date 2016-03-02 - 2016-03-04 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Communication Workshop 
Paper Information
Registration To RCS 
Conference Code 2016-03-RCS-CCS-SR-SRW 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Interference Alignment for Multi-User MIMO Interference Channels Based on Estimated Uplink Channels 
Sub Title (in English)  
Keyword(1) Interference alignment (IA)  
Keyword(2) Channel state information (CSI)  
Keyword(3) Sum-rate maximization  
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1st Author's Name Fereidoun H. Panahi  
1st Author's Affiliation Keio University (Keio Univ.)
2nd Author's Name Tomoaki Ohtsuki  
2nd Author's Affiliation Keio University (Keio Univ.)
3rd Author's Name Wenjie Jiang  
3rd Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
4th Author's Name Yasushi Takatori  
4th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
5th Author's Name Kazuhiro Uehara  
5th Author's Affiliation Nippon Telegraph and Telephone Corporation (NTT)
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Speaker Author-1 
Date Time 2016-03-02 13:15:00 
Presentation Time 25 minutes 
Registration for RCS 
Paper # RCS2015-351 
Volume (vol) vol.115 
Number (no) no.472 
Page pp.109-114 
#Pages 6 
Date of Issue 2016-02-24 (RCS) 

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