Cart (Loading....) | Create Account
Close category search window
 

Exploiting the nature of extrinsic information in iterative decoding

Sign In

Cookies must be enabled to login.After enabling cookies , please use refresh or reload or ctrl+f5 on the browser for the login options.

Formats Non-Member Member
$31 $13
Learn how you can qualify for the best price for this item!
Become an IEEE Member or Subscribe to
IEEE Xplore for exclusive pricing!
close button

puzzle piece

IEEE membership options for an individual and IEEE Xplore subscriptions for an organization offer the most affordable access to essential journal articles, conference papers, standards, eBooks, and eLearning courses.

Learn more about:

IEEE membership

IEEE Xplore subscriptions

2 Author(s)
Isukapalli, Y. ; Dept. of Electr. & Comput. Eng., Villanova Univ., PA, USA ; Rao, S.S.

Histograms of extrinsic information are used to explain the performance gain of standard turbo codes with number of iterations. The simulation results presented clearly show the Gaussian nature of the extrinsic information and they also establish a heuristic link with performance gain. Based on the histogram plots, a modified form of turbo encoding and decoding structure is proposed. The encoder is formed with three parallelly concatenated recursive systematic convolutional (RSC) encoding blocks separated by two random interleavers, subsequently a heuristic method is proposed about the way the extrinsic information is fed to the three blocks in the decoder. A new scaling of extrinsic information is proposed based on the observations made on new structure as well as performance gain in standard turbo structure.

Published in:

Signals, Systems and Computers, 2004. Conference Record of the Thirty-Seventh Asilomar Conference on  (Volume:2 )

Date of Conference:

9-12 Nov. 2003

Need Help?


IEEE Advancing Technology for Humanity About IEEE Xplore | Contact | Help | Terms of Use | Nondiscrimination Policy | Site Map | Privacy & Opting Out of Cookies

A not-for-profit organization, IEEE is the world's largest professional association for the advancement of technology.
© Copyright 2014 IEEE - All rights reserved. Use of this web site signifies your agreement to the terms and conditions.