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Paper Abstract and Keywords
Presentation 2012-05-25 14:25
On the relationship between the redundancy and the coding rate of FF codes
Mitsuharu Arimura (Shonan Inst. Tech.), Hiroki Koga (Tsukuba Univ.), Ken-ichi Iwata (Fukui Univ.) IT2012-2
Abstract (in Japanese) (See Japanese page) 
(in English) Two kinds of optimality of the fixed-to-fixed length (FF) codes for a general source are studied. Han showed that the optimal rate of the FF code is equal to the spectral sup-information rate. On the other hand, Arimura and Iwata defined the redundancy of the FF code and showed that the optimal redundancy is equal to the asymptotic width of the information-spectrum of the source defined by Koga. This paper investigates relationships between the two classes of the optimal codes with respect to the coding rate and the redundancy, respectively. We give a necessary and sufficient condition such that these two classes coincide. In particular, we can prove that one class becomes a subset of the other if and only if the asymptotic width of information-spectrum coincides with its lower or upper bounds.
Keyword (in Japanese) (See Japanese page) 
(in English) source coding / FF code / redundancy / coding rate / general source / information spectrum / /  
Reference Info. IEICE Tech. Rep., vol. 112, no. 58, IT2012-2, pp. 7-12, May 2012.
Paper # IT2012-2 
Date of Issue 2012-05-18 (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 2012-05-25 - 2012-05-25 
Place (in Japanese) (See Japanese page) 
Place (in English)  
Topics (in Japanese) (See Japanese page) 
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Paper Information
Registration To IT 
Conference Code 2012-05-IT 
Language Japanese 
Title (in Japanese) (See Japanese page) 
Sub Title (in Japanese) (See Japanese page) 
Title (in English) On the relationship between the redundancy and the coding rate of FF codes 
Sub Title (in English)  
Keyword(1) source coding  
Keyword(2) FF code  
Keyword(3) redundancy  
Keyword(4) coding rate  
Keyword(5) general source  
Keyword(6) information spectrum  
Keyword(7)  
Keyword(8)  
1st Author's Name Mitsuharu Arimura  
1st Author's Affiliation Shonan Institute of Technology (Shonan Inst. Tech.)
2nd Author's Name Hiroki Koga  
2nd Author's Affiliation Tsukuba University (Tsukuba Univ.)
3rd Author's Name Ken-ichi Iwata  
3rd Author's Affiliation Fukui University (Fukui Univ.)
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Speaker Author-1 
Date Time 2012-05-25 14:25:00 
Presentation Time 25 minutes 
Registration for IT 
Paper # IT2012-2 
Volume (vol) vol.112 
Number (no) no.58 
Page pp.7-12 
#Pages 6 
Date of Issue 2012-05-18 (IT) 

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