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Paper Abstract and Keywords
Presentation 2006-03-17 11:10
Improvement of Water Fall region characteristics of serially concatenated trellis-coded modulation
Daisuke Kobayashi, Toshiyuki Shohon, Haruo Ogiwara (Nagaoka Univ. of Tech.)
Abstract (in Japanese) (See Japanese page) 
(in English) We propose a new system structure which improve the Water Fall region characteristics of serially concatenated trellis-coded modulation (SCTCM). The conventional system of the SCTCM cannot obtain the coding gain due to the code rate of the inner encoder is equal to 1. Therefore, the proposed system adds the puncutre to the output of the outer encoder, and redueces the code rate of the inner encoder. Thus, the proposed system is able to obtain the coding gain of the inner encoder, and the proposed system is expected to improve the lower ${\rm E_{b}/N_{0}}$ region characteristics. Amount of improvement of Water Fall region characteristics changes by the puncture of the output of the outer encoder. Then, we propose a search method for optimum pattern which improves the Water Fall region characteristics significantly. The optimum pattern of the proposed system is obtained 0.75[dB] improvement of the Water Fall region characteristics comaperd with conventional system of SCTCM at BER $10^{-4}$.
Keyword (in Japanese) (See Japanese page) 
(in English) SCTCM / Water Fall region / / / / / /  
Reference Info. IEICE Tech. Rep., vol. 105, no. 662, IT2005-125, pp. 177-182, March 2006.
Paper # IT2005-125 
Date of Issue 2006-03-10 (IT, ISEC, WBS) 
ISSN Print edition: ISSN 0913-5685
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Conference Information
Committee WBS IT ISEC  
Conference Date 2006-03-16 - 2006-03-17 
Place (in Japanese) (See Japanese page) 
Place (in English) Nagoya Univ. 
Topics (in Japanese) (See Japanese page) 
Topics (in English)  
Paper Information
Registration To IT 
Conference Code 2006-03-WBS-IT-ISEC 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) Improvement of Water Fall region characteristics of serially concatenated trellis-coded modulation 
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Keyword(1) SCTCM  
Keyword(2) Water Fall region  
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1st Author's Name Daisuke Kobayashi  
1st Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
2nd Author's Name Toshiyuki Shohon  
2nd Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
3rd Author's Name Haruo Ogiwara  
3rd Author's Affiliation Nagaoka University of Technology (Nagaoka Univ. of Tech.)
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Speaker Author-1 
Date Time 2006-03-17 11:10:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2005-125, ISEC2005-182, WBS2005-139 
Volume (vol) vol.105 
Number (no) no.662(IT), no.664(ISEC), no.666(WBS) 
Page pp.177-182 
#Pages
Date of Issue 2006-03-10 (IT, ISEC, WBS) 


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