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Paper Abstract and Keywords
Presentation 2009-09-29 15:10
[Invited Talk] LDPC codes for the Advanced Digital Satellite Broadcasting Systems
Yoichi Suzuki, Akinori Hashimoto, Masaaki Kojima, Shoji Tanaka, Takeshi Kimura, Tomohiro Saito (NHK STRL) IT2009-36
Abstract (in Japanese) (See Japanese page) 
(in English) The advanced satellite broadcasting system, which can improve the transmission capacity for future broadcasting services and has connectibility with communication network, was standardized as ARIB STD-B44 in Japan. Adopting LDPC code and a smaller roll-off factor =0.1), this system accomplished a 30% higher transmission capacity in comparison with the current ISDB-S system. In addition, the transmission capacity can be more increased by using multi-level amplitude phase shift keying (M-APSK) modulation. The new system adopts 5 types of modulation scheme, which consists of π/2 shift BPSK, QPSK and 8PSK modulations as well as 16APSK and 32APSK modulations. The LDPC codes adopted in this system have code ward length of 44,880 bits and LDGM(Low Density Generation Matrix) configuration as a form of Parity Check Matrix. The LDPC codes support 11 code rates. First, this report describes requirements for forward error correction scheme of the new system. Second, the transmission scheme of this system was introduced and we show the TDM frame architecture needed for the design of the LDPC codes. Third, we introduce a method of eliminating cycle 4 and cycle 6 in Parity Check Matrix and parameters of Parity Check matrices. Forth, the computer simulation results of BPSK, QPSK, and 8PSK performances under the AWGN channel model are reported. Finally, we discuss and report the optimization result gained from a computer simulation of the radius ratio of LDPC-coded 16APSK and 32APSK modulation, which is proposed in this system, with respect to Bit Error Rate under the AWGN channel model.
Keyword (in Japanese) (See Japanese page) 
(in English) Satellite Broadcasting / ISDB-S / LDPC code / APSK / 16APSK / 32APSK / /  
Reference Info. IEICE Tech. Rep., vol. 109, no. 212, IT2009-36, pp. 19-24, Sept. 2009.
Paper # IT2009-36 
Date of Issue 2009-09-22 (IT) 
ISSN Print edition: ISSN 0913-5685    Online edition: ISSN 2432-6380
Copyright
and
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 IT  
Conference Date 2009-09-29 - 2009-09-30 
Place (in Japanese) (See Japanese page) 
Place (in English) Sophia Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English) LDPC codes, general 
Paper Information
Registration To IT 
Conference Code 2009-09-IT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) LDPC codes for the Advanced Digital Satellite Broadcasting Systems 
Sub Title (in English)  
Keyword(1) Satellite Broadcasting  
Keyword(2) ISDB-S  
Keyword(3) LDPC code  
Keyword(4) APSK  
Keyword(5) 16APSK  
Keyword(6) 32APSK  
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Keyword(8)  
1st Author's Name Yoichi Suzuki  
1st Author's Affiliation NHK Science & Technology Research Laboratories (NHK STRL)
2nd Author's Name Akinori Hashimoto  
2nd Author's Affiliation NHK Science & Technology Research Laboratories (NHK STRL)
3rd Author's Name Masaaki Kojima  
3rd Author's Affiliation NHK Science & Technology Research Laboratories (NHK STRL)
4th Author's Name Shoji Tanaka  
4th Author's Affiliation NHK Science & Technology Research Laboratories (NHK STRL)
5th Author's Name Takeshi Kimura  
5th Author's Affiliation NHK Science & Technology Research Laboratories (NHK STRL)
6th Author's Name Tomohiro Saito  
6th Author's Affiliation NHK Science & Technology Research Laboratories (NHK STRL)
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Speaker Author-1 
Date Time 2009-09-29 15:10:00 
Presentation Time 50 minutes 
Registration for IT 
Paper # IT2009-36 
Volume (vol) vol.109 
Number (no) no.212 
Page pp.19-24 
#Pages 6 
Date of Issue 2009-09-22 (IT) 

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