NDLI: Truncated Convolutional Codes as a New Approach of Unequal Error Protection

Content Provider	IEEE Xplore Digital Library
Author	Bredtmann, O. Czylwik, A.
Copyright Year	2010
Abstract	In a wireless networked control system (WNCS), physical processes are periodically observed and corresponding single analog measurements are digitized by scalar quantizers. Subsequently, these data are transmitted via a digital wireless communication system. A new source/channel coding scheme is presented that achieves a very low mean square error (MSE) of the analog physical values when they are transmitted over a noisy channel. The use of a quantizer with natural binary code (NBC) labeling is proposed and it is shown that a certain class of linear unequal error protection (LUEP) block codes which are obtained from convolutional codes by direct truncation (DT) termination, matches the source characteristics of this kind of quantizer and leads to a low MSE. The LUEP capabilities of such codes are examined and simulation results are presented that show that such codes outperform standard block codes as well as Ma's generalized tail-biting (GTB) codes. Additionally, we provide examples where convolutional encoded quantizer outputs also show superior performance compared to redundant index assignments which are obtained from spread s snake-in-the-box (SIB) codes. Furthermore, by means of a special class of time-varying convolutional codes, we develop a method for the bitwise adjustment of the protection levels of an LUEP block code, which may be used to adapt the code to the channel.
Starting Page	1
Ending Page	5
File Size	185374
Page Count	5
File Format	PDF
ISBN	9781424435739
ISSN	10903038
DOI	10.1109/VETECF.2010.5594441
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-09-06
Publisher Place	Canada
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Convolutional codes Error probability Indexes Decoding Block codes Error correction codes
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in