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Paper Abstract and Keywords
Presentation 2005-03-15 10:45
A Study on Rate Estimation Technique of Rate-Compatible LDPC Codes
Tomoyasu Yoshikawa, Tetsuo Tsujioka, Hisayoshi Sugiyama, Masashi Murata (Osaka City Univ.)
Abstract (in Japanese) (See Japanese page) 
(in English) Recently, Rate-Compatible LDPC (RC-LDPC) codes are attractive research topics on channel coding. RC-LDPC codes provide various coding rates and users can select suitable code rates according to channel conditions. However, RC-LDPC codes have a disadvantage that transmitter should notify the code rate to the receiver as a side-information. In this paper, we proposed a rate estimation technique that the receiver can estimate used code rate based on posteriori log-likelihood ration (LLR) even if transmitter selects code rates randomly. Computer simulation results show that proposed technique can improve performance of rate estimation of RC-LDPC codes. Moreover, it is obtained that complexity of computation can be reduced.
Keyword (in Japanese) (See Japanese page) 
(in English) Low-Density Parity-Check (LDPC) codes / Rate Estimation Technique / Rate-Compatible LDPC codes / Quasi-Cyclic codes / / / /  
Reference Info. IEICE Tech. Rep., vol. 104, no. 721, CS2004-236, pp. 19-24, March 2005.
Paper # CS2004-236 
Date of Issue 2005-03-08 (CAS, SIP, CS) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee CS CAS SIP  
Conference Date 2005-03-14 - 2005-03-15 
Place (in Japanese) (See Japanese page) 
Place (in English) Okayama Prefectural University 
Topics (in Japanese) (See Japanese page) 
Topics (in English) Network processors, signal processing for communications, coding theory, etc. 
Paper Information
Registration To CS 
Conference Code 2005-03-CS-CAS-SIP 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) A Study on Rate Estimation Technique of Rate-Compatible LDPC Codes 
Sub Title (in English)  
Keyword(1) Low-Density Parity-Check (LDPC) codes  
Keyword(2) Rate Estimation Technique  
Keyword(3) Rate-Compatible LDPC codes  
Keyword(4) Quasi-Cyclic codes  
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Keyword(8)  
1st Author's Name Tomoyasu Yoshikawa  
1st Author's Affiliation Osaka City University (Osaka City Univ.)
2nd Author's Name Tetsuo Tsujioka  
2nd Author's Affiliation Osaka City University (Osaka City Univ.)
3rd Author's Name Hisayoshi Sugiyama  
3rd Author's Affiliation Osaka City University (Osaka City Univ.)
4th Author's Name Masashi Murata  
4th Author's Affiliation Osaka City University (Osaka City Univ.)
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Speaker Author-1 
Date Time 2005-03-15 10:45:00 
Presentation Time 25 minutes 
Registration for CS 
Paper # CAS2004-100, SIP2004-143, CS2004-236 
Volume (vol) vol.104 
Number (no) no.717(CAS), no.719(SIP), no.721(CS) 
Page pp.19-24 
#Pages
Date of Issue 2005-03-08 (CAS, SIP, CS) 


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