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Paper Abstract and Keywords
Presentation 2012-08-31 10:40
Multi-rate LDGM block transmission scheme for satellite laser communications
Takuma Kyo, Eiji Okamoto (NIT), Yozo Shoji, Yoshihisa Takayama, Morio Toyoshima (NICT) SAT2012-27
Abstract (in Japanese) (See Japanese page) 
(in English) A satellite laser communication, which provides high-speed and high-capacity satellite communications, draws much attention. In the satellite-to-ground laser communication, the laser is affected by some factors such as air scintillation. Therefore, forward error correction (FEC) scheme, efficient for satellite laser communication, is needed to provide high quality communication. We have showed that low-density generator matrix (LDGM) code which is one of the FEC scheme is suitable for satellite laser communication and the multi-rate LDGM transmission scheme with blind code rate estimation enables flexible and rate-efficient data transmission in the low earth orbit (LEO)-to-ground laser communication. However, this multi-rate scheme causes a few rate estimation errors in the burst erasure channel and more accurate estimation is needed to avoid the synchronization loss of information data caused by multi-rate mismatching. In this paper, we propose a new multi-rate block transmission scheme and its accurate rate estimation algorithm. We also show the improved performances of rate-estimation and its calculation complexity at the decoder from numerical results.
Keyword (in Japanese) (See Japanese page) 
(in English) satellite laser communications / multi-rate transmission / rate estimation / LDGM codes / / / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 191, SAT2012-27, pp. 55-60, Aug. 2012.
Paper # SAT2012-27 
Date of Issue 2012-08-23 (SAT) 
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)
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Conference Information
Committee SAT RCS  
Conference Date 2012-08-30 - 2012-08-31 
Place (in Japanese) (See Japanese page) 
Place (in English) Kochi City Cultura-Plaza CUL-PORT 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Mobile Satellite Communications, Broadcasting, Error Correction, Wireless Communication Systems, etc. 
Paper Information
Registration To SAT 
Conference Code 2012-08-SAT-RCS 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Multi-rate LDGM block transmission scheme for satellite laser communications 
Sub Title (in English)  
Keyword(1) satellite laser communications  
Keyword(2) multi-rate transmission  
Keyword(3) rate estimation  
Keyword(4) LDGM codes  
1st Author's Name Takuma Kyo  
1st Author's Affiliation Nagoya Institute of Technology (NIT)
2nd Author's Name Eiji Okamoto  
2nd Author's Affiliation Nagoya Institute of Technology (NIT)
3rd Author's Name Yozo Shoji  
3rd Author's Affiliation National Institute of Information and Communications Technology (NICT)
4th Author's Name Yoshihisa Takayama  
4th Author's Affiliation National Institute of Information and Communications Technology (NICT)
5th Author's Name Morio Toyoshima  
5th Author's Affiliation National Institute of Information and Communications Technology (NICT)
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Date Time 2012-08-31 10:40:00 
Presentation Time 25 
Registration for SAT 
Paper # IEICE-SAT2012-27 
Volume (vol) IEICE-112 
Number (no) no.191 
Page pp.55-60 
#Pages IEICE-6 
Date of Issue IEICE-SAT-2012-08-23 

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