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Paper Abstract and Keywords
Presentation 2011-09-29 14:40
Spatially Coupled Low Density Lattice Codes
Hironori Uchikawa (Tokyo Inst. of Tech.), Brian M. Kurkoski (Univ. of Electro-Comm.), Kenta Kasai, Kohichi Sakaniwa (Tokyo Inst. of Tech.) IT2011-25
Abstract (in Japanese) (See Japanese page) 
(in English) Spatially-coupled low-density lattice codes
(LDLC) are constructed using protographs.
Using Monte Carlo density evolution using single-Gaussian messages,
we observe that the threshold of the spatially-coupled LDLC
is within 0.22 dB of capacity of the unconstrained power channel.
This is in contrast with a 0.5 dB noise threshold for the conventional LDLC lattice construction.
Keyword (in Japanese) (See Japanese page) 
(in English) Low density lattice codes / Spatial Coupling / Density evolution / / / / /  
Reference Info. IEICE Tech. Rep., vol. 111, no. 220, IT2011-25, pp. 9-14, Sept. 2011.
Paper # IT2011-25 
Date of Issue 2011-09-22 (IT) 
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 IT2011-25

Conference Information
Committee IT  
Conference Date 2011-09-29 - 2011-09-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Tokyo Institute of Technology 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IT 
Conference Code 2011-09-IT 
Language English 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Spatially Coupled Low Density Lattice Codes 
Sub Title (in English)  
Keyword(1) Low density lattice codes  
Keyword(2) Spatial Coupling  
Keyword(3) Density evolution  
1st Author's Name Hironori Uchikawa  
1st Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
2nd Author's Name Brian M. Kurkoski  
2nd Author's Affiliation University of Electro-Communications (Univ. of Electro-Comm.)
3rd Author's Name Kenta Kasai  
3rd Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
4th Author's Name Kohichi Sakaniwa  
4th Author's Affiliation Tokyo Institute of Technology (Tokyo Inst. of Tech.)
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Date Time 2011-09-29 14:40:00 
Presentation Time 25 
Registration for IT 
Paper # IEICE-IT2011-25 
Volume (vol) IEICE-111 
Number (no) no.220 
Page pp.9-14 
#Pages IEICE-6 
Date of Issue IEICE-IT-2011-09-22 

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