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Paper Abstract and Keywords
Presentation 2012-10-26 10:55
On Feasibility of Semi-Blind Interference Alignment over OFDM Channels
Manato Takai (Shizuoka Univ.), Koji Ishibashi (The Univ. of Electro-Communications), Won-Yong Shin (Dankook Univ.), Hyo Seok Yi (Harvard Univ.), Tadahiro Wada (Shizuoka Univ.) WBS2012-27
Abstract (in Japanese) (See Japanese page) 
(in English) Interference alignment (IA) is an effective approach, which acheives high capacity by overlapping in- terference signals in a subspace. Transmitters, however, require global channel knowledge and precise time syn- chronization. In order to facilitate these practical difficulties, we have proposed new interference alginment scheme named semi-blind interference alginment (S-BIA), where each transmitter needs to know channel coefficients related to itself and S-BIA retains the same degrees of freedom (DoF) as conventional IA scheme. In this paper, we in- vesitgate the feasibility and practical concerns of S-BIA using orthogonal frequency division multiplexing (OFDM). Specifically, we study the effect of time synchronization error between transmitters and peak-to-average power ratio (PAPR) via computer simulations. We further investigate convolutionally coded S-BIA with OFDM transmission and show its bit error rate (BER) performance.
Keyword (in Japanese) (See Japanese page) 
(in English) Interference Alignment (IA) / distributed network / $X$ Channel / frequency selective channel / orthogonal frequency division multiplexing(OFDM) / degrees-of-freedom gain / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 264, WBS2012-27, pp. 7-12, Oct. 2012.
Paper # WBS2012-27 
Date of Issue 2012-10-19 (WBS) 
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)
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Conference Information
Committee WBS  
Conference Date 2012-10-26 - 2012-10-26 
Place (in Japanese) (See Japanese page) 
Place (in English) Kyoto Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Green communications, communication systems, etc., poster session 
Paper Information
Registration To WBS 
Conference Code 2012-10-WBS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On Feasibility of Semi-Blind Interference Alignment over OFDM Channels 
Sub Title (in English)  
Keyword(1) Interference Alignment (IA)  
Keyword(2) distributed network  
Keyword(3) $X$ Channel  
Keyword(4) frequency selective channel  
Keyword(5) orthogonal frequency division multiplexing(OFDM)  
Keyword(6) degrees-of-freedom gain  
Keyword(7)  
Keyword(8)  
1st Author's Name Manato Takai  
1st Author's Affiliation Shizuoka University (Shizuoka Univ.)
2nd Author's Name Koji Ishibashi  
2nd Author's Affiliation The University of Electro-Communications (The Univ. of Electro-Communications)
3rd Author's Name Won-Yong Shin  
3rd Author's Affiliation Dankook University (Dankook Univ.)
4th Author's Name Hyo Seok Yi  
4th Author's Affiliation Harvard University (Harvard Univ.)
5th Author's Name Tadahiro Wada  
5th Author's Affiliation Shizuoka University (Shizuoka Univ.)
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Speaker Author-1 
Date Time 2012-10-26 10:55:00 
Presentation Time 25 minutes 
Registration for WBS 
Paper # WBS2012-27 
Volume (vol) vol.112 
Number (no) no.264 
Page pp.7-12 
#Pages 6 
Date of Issue 2012-10-19 (WBS) 

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