Publications-Detail

Efficient Iterative Source-Channel Decoding Using Irregular Index Assignments

Authors:
Schmalen, L.Vary, P.Clevorn, T.Schotsch, B.
Book Title:
Proceedings of International ITG Conference on Source and Channel Coding (SCC)
Publisher:
VDE Verlag GmbH
Address:
Ulm, Germany
Date:
Jan. 2008
ISBN:
978-3-80073-077-3
Language:
English

Abstract

We present a system for iterative source-channel decoding (ISCD) using irregular index assignments: The concept of irregular codes is applied to the index assignment of a scalar quantizer. The optimization performed in the EXIT chart enables near optimum transmission. The irregular index assignments are constructed by using high-rate block codes. This construction allows to use a very simple stopping criterion at the receiver and thereby to potentially reduce the number of iterations. We demonstrate the performance of this system by means of a simulation example over an AWGN channel with hard decision at the output. Furthermore we present simple yet effective measures for the case that no channel state information (e.g., instantaneous bit error rate) is available.

Download

BibTeX

Copyright © by IKS
schmalen08.pdf
This material is presented to ensure timely dissemination of scholarly and technical work. Copyright and all rights therein are retained by authors or by other copyright holders. All persons copying this information are expected to adhere to the terms and constraints invoked by each author's copyright. In most cases, these works may not be reposted without the explicit permission of the copyright holder.